/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2017 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * @licend The above is the entire license notice for the
 * Javascript code in this page
 */

(function webpackUniversalModuleDefinition(root, factory) {
	if(typeof exports === 'object' && typeof module === 'object')
		module.exports = factory();
	else if(typeof define === 'function' && define.amd)
		define("pdfjs-dist/build/pdf", [], factory);
	else if(typeof exports === 'object')
		exports["pdfjs-dist/build/pdf"] = factory();
	else
		root["pdfjs-dist/build/pdf"] = root.pdfjsLib = factory();
})(typeof self !== 'undefined' ? self : this, function() {
return /******/ (function(modules) { // webpackBootstrap
/******/ 	// The module cache
/******/ 	var installedModules = {};
/******/
/******/ 	// The require function
/******/ 	function __w_pdfjs_require__(moduleId) {
/******/
/******/ 		// Check if module is in cache
/******/ 		if(installedModules[moduleId]) {
/******/ 			return installedModules[moduleId].exports;
/******/ 		}
/******/ 		// Create a new module (and put it into the cache)
/******/ 		var module = installedModules[moduleId] = {
/******/ 			i: moduleId,
/******/ 			l: false,
/******/ 			exports: {}
/******/ 		};
/******/
/******/ 		// Execute the module function
/******/ 		modules[moduleId].call(module.exports, module, module.exports, __w_pdfjs_require__);
/******/
/******/ 		// Flag the module as loaded
/******/ 		module.l = true;
/******/
/******/ 		// Return the exports of the module
/******/ 		return module.exports;
/******/ 	}
/******/
/******/
/******/ 	// expose the modules object (__webpack_modules__)
/******/ 	__w_pdfjs_require__.m = modules;
/******/
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/******/ 	__w_pdfjs_require__.c = installedModules;
/******/
/******/ 	// define getter function for harmony exports
/******/ 	__w_pdfjs_require__.d = function(exports, name, getter) {
/******/ 		if(!__w_pdfjs_require__.o(exports, name)) {
/******/ 			Object.defineProperty(exports, name, {
/******/ 				configurable: false,
/******/ 				enumerable: true,
/******/ 				get: getter
/******/ 			});
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/******/ 	};
/******/
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/******/ 	__w_pdfjs_require__.n = function(module) {
/******/ 		var getter = module && module.__esModule ?
/******/ 			function getDefault() { return module['default']; } :
/******/ 			function getModuleExports() { return module; };
/******/ 		__w_pdfjs_require__.d(getter, 'a', getter);
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/******/ 	__w_pdfjs_require__.p = "";
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/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.unreachable = exports.warn = exports.utf8StringToString = exports.stringToUTF8String = exports.stringToPDFString = exports.stringToBytes = exports.string32 = exports.shadow = exports.setVerbosityLevel = exports.ReadableStream = exports.removeNullCharacters = exports.readUint32 = exports.readUint16 = exports.readInt8 = exports.log2 = exports.isEvalSupported = exports.isLittleEndian = exports.createValidAbsoluteUrl = exports.isSameOrigin = exports.isSpace = exports.isString = exports.isNum = exports.isEmptyObj = exports.isBool = exports.isArrayBuffer = exports.info = exports.getVerbosityLevel = exports.getLookupTableFactory = exports.getInheritableProperty = exports.deprecated = exports.createObjectURL = exports.createPromiseCapability = exports.createBlob = exports.bytesToString = exports.assert = exports.arraysToBytes = exports.arrayByteLength = exports.FormatError = exports.XRefParseException = exports.Util = exports.UnknownErrorException = exports.UnexpectedResponseException = exports.TextRenderingMode = exports.StreamType = exports.PasswordResponses = exports.PasswordException = exports.PageViewport = exports.NotImplementedException = exports.NativeImageDecoding = exports.MissingPDFException = exports.MissingDataException = exports.MessageHandler = exports.InvalidPDFException = exports.AbortException = exports.CMapCompressionType = exports.ImageKind = exports.FontType = exports.AnnotationType = exports.AnnotationFlag = exports.AnnotationFieldFlag = exports.AnnotationBorderStyleType = exports.UNSUPPORTED_FEATURES = exports.VerbosityLevel = exports.OPS = exports.IDENTITY_MATRIX = exports.FONT_IDENTITY_MATRIX = undefined;

__w_pdfjs_require__(6);

var _streams_polyfill = __w_pdfjs_require__(7);

var FONT_IDENTITY_MATRIX = [0.001, 0, 0, 0.001, 0, 0];
const NativeImageDecoding = {
  NONE: 'none',
  DECODE: 'decode',
  DISPLAY: 'display'
};
var TextRenderingMode = {
  FILL: 0,
  STROKE: 1,
  FILL_STROKE: 2,
  INVISIBLE: 3,
  FILL_ADD_TO_PATH: 4,
  STROKE_ADD_TO_PATH: 5,
  FILL_STROKE_ADD_TO_PATH: 6,
  ADD_TO_PATH: 7,
  FILL_STROKE_MASK: 3,
  ADD_TO_PATH_FLAG: 4
};
var ImageKind = {
  GRAYSCALE_1BPP: 1,
  RGB_24BPP: 2,
  RGBA_32BPP: 3
};
var AnnotationType = {
  TEXT: 1,
  LINK: 2,
  FREETEXT: 3,
  LINE: 4,
  SQUARE: 5,
  CIRCLE: 6,
  POLYGON: 7,
  POLYLINE: 8,
  HIGHLIGHT: 9,
  UNDERLINE: 10,
  SQUIGGLY: 11,
  STRIKEOUT: 12,
  STAMP: 13,
  CARET: 14,
  INK: 15,
  POPUP: 16,
  FILEATTACHMENT: 17,
  SOUND: 18,
  MOVIE: 19,
  WIDGET: 20,
  SCREEN: 21,
  PRINTERMARK: 22,
  TRAPNET: 23,
  WATERMARK: 24,
  THREED: 25,
  REDACT: 26
};
var AnnotationFlag = {
  INVISIBLE: 0x01,
  HIDDEN: 0x02,
  PRINT: 0x04,
  NOZOOM: 0x08,
  NOROTATE: 0x10,
  NOVIEW: 0x20,
  READONLY: 0x40,
  LOCKED: 0x80,
  TOGGLENOVIEW: 0x100,
  LOCKEDCONTENTS: 0x200
};
var AnnotationFieldFlag = {
  READONLY: 0x0000001,
  REQUIRED: 0x0000002,
  NOEXPORT: 0x0000004,
  MULTILINE: 0x0001000,
  PASSWORD: 0x0002000,
  NOTOGGLETOOFF: 0x0004000,
  RADIO: 0x0008000,
  PUSHBUTTON: 0x0010000,
  COMBO: 0x0020000,
  EDIT: 0x0040000,
  SORT: 0x0080000,
  FILESELECT: 0x0100000,
  MULTISELECT: 0x0200000,
  DONOTSPELLCHECK: 0x0400000,
  DONOTSCROLL: 0x0800000,
  COMB: 0x1000000,
  RICHTEXT: 0x2000000,
  RADIOSINUNISON: 0x2000000,
  COMMITONSELCHANGE: 0x4000000
};
var AnnotationBorderStyleType = {
  SOLID: 1,
  DASHED: 2,
  BEVELED: 3,
  INSET: 4,
  UNDERLINE: 5
};
var StreamType = {
  UNKNOWN: 0,
  FLATE: 1,
  LZW: 2,
  DCT: 3,
  JPX: 4,
  JBIG: 5,
  A85: 6,
  AHX: 7,
  CCF: 8,
  RL: 9
};
var FontType = {
  UNKNOWN: 0,
  TYPE1: 1,
  TYPE1C: 2,
  CIDFONTTYPE0: 3,
  CIDFONTTYPE0C: 4,
  TRUETYPE: 5,
  CIDFONTTYPE2: 6,
  TYPE3: 7,
  OPENTYPE: 8,
  TYPE0: 9,
  MMTYPE1: 10
};
const VerbosityLevel = {
  ERRORS: 0,
  WARNINGS: 1,
  INFOS: 5
};
var CMapCompressionType = {
  NONE: 0,
  BINARY: 1,
  STREAM: 2
};
var OPS = {
  dependency: 1,
  setLineWidth: 2,
  setLineCap: 3,
  setLineJoin: 4,
  setMiterLimit: 5,
  setDash: 6,
  setRenderingIntent: 7,
  setFlatness: 8,
  setGState: 9,
  save: 10,
  restore: 11,
  transform: 12,
  moveTo: 13,
  lineTo: 14,
  curveTo: 15,
  curveTo2: 16,
  curveTo3: 17,
  closePath: 18,
  rectangle: 19,
  stroke: 20,
  closeStroke: 21,
  fill: 22,
  eoFill: 23,
  fillStroke: 24,
  eoFillStroke: 25,
  closeFillStroke: 26,
  closeEOFillStroke: 27,
  endPath: 28,
  clip: 29,
  eoClip: 30,
  beginText: 31,
  endText: 32,
  setCharSpacing: 33,
  setWordSpacing: 34,
  setHScale: 35,
  setLeading: 36,
  setFont: 37,
  setTextRenderingMode: 38,
  setTextRise: 39,
  moveText: 40,
  setLeadingMoveText: 41,
  setTextMatrix: 42,
  nextLine: 43,
  showText: 44,
  showSpacedText: 45,
  nextLineShowText: 46,
  nextLineSetSpacingShowText: 47,
  setCharWidth: 48,
  setCharWidthAndBounds: 49,
  setStrokeColorSpace: 50,
  setFillColorSpace: 51,
  setStrokeColor: 52,
  setStrokeColorN: 53,
  setFillColor: 54,
  setFillColorN: 55,
  setStrokeGray: 56,
  setFillGray: 57,
  setStrokeRGBColor: 58,
  setFillRGBColor: 59,
  setStrokeCMYKColor: 60,
  setFillCMYKColor: 61,
  shadingFill: 62,
  beginInlineImage: 63,
  beginImageData: 64,
  endInlineImage: 65,
  paintXObject: 66,
  markPoint: 67,
  markPointProps: 68,
  beginMarkedContent: 69,
  beginMarkedContentProps: 70,
  endMarkedContent: 71,
  beginCompat: 72,
  endCompat: 73,
  paintFormXObjectBegin: 74,
  paintFormXObjectEnd: 75,
  beginGroup: 76,
  endGroup: 77,
  beginAnnotations: 78,
  endAnnotations: 79,
  beginAnnotation: 80,
  endAnnotation: 81,
  paintJpegXObject: 82,
  paintImageMaskXObject: 83,
  paintImageMaskXObjectGroup: 84,
  paintImageXObject: 85,
  paintInlineImageXObject: 86,
  paintInlineImageXObjectGroup: 87,
  paintImageXObjectRepeat: 88,
  paintImageMaskXObjectRepeat: 89,
  paintSolidColorImageMask: 90,
  constructPath: 91
};
let verbosity = VerbosityLevel.WARNINGS;
function setVerbosityLevel(level) {
  if (Number.isInteger(level)) {
    verbosity = level;
  }
}
function getVerbosityLevel() {
  return verbosity;
}
function info(msg) {
  if (verbosity >= VerbosityLevel.INFOS) {
    console.log('Info: ' + msg);
  }
}
function warn(msg) {
  if (verbosity >= VerbosityLevel.WARNINGS) {
    console.log('Warning: ' + msg);
  }
}
function deprecated(details) {
  console.log('Deprecated API usage: ' + details);
}
function unreachable(msg) {
  throw new Error(msg);
}
function assert(cond, msg) {
  if (!cond) {
    unreachable(msg);
  }
}
var UNSUPPORTED_FEATURES = {
  unknown: 'unknown',
  forms: 'forms',
  javaScript: 'javaScript',
  smask: 'smask',
  shadingPattern: 'shadingPattern',
  font: 'font'
};
function isSameOrigin(baseUrl, otherUrl) {
  try {
    var base = new URL(baseUrl);
    if (!base.origin || base.origin === 'null') {
      return false;
    }
  } catch (e) {
    return false;
  }
  var other = new URL(otherUrl, base);
  return base.origin === other.origin;
}
function isValidProtocol(url) {
  if (!url) {
    return false;
  }
  switch (url.protocol) {
    case 'http:':
    case 'https:':
    case 'ftp:':
    case 'mailto:':
    case 'tel:':
      return true;
    default:
      return false;
  }
}
function createValidAbsoluteUrl(url, baseUrl) {
  if (!url) {
    return null;
  }
  try {
    var absoluteUrl = baseUrl ? new URL(url, baseUrl) : new URL(url);
    if (isValidProtocol(absoluteUrl)) {
      return absoluteUrl;
    }
  } catch (ex) {}
  return null;
}
function shadow(obj, prop, value) {
  Object.defineProperty(obj, prop, {
    value,
    enumerable: true,
    configurable: true,
    writable: false
  });
  return value;
}
function getLookupTableFactory(initializer) {
  var lookup;
  return function () {
    if (initializer) {
      lookup = Object.create(null);
      initializer(lookup);
      initializer = null;
    }
    return lookup;
  };
}
var PasswordResponses = {
  NEED_PASSWORD: 1,
  INCORRECT_PASSWORD: 2
};
var PasswordException = function PasswordExceptionClosure() {
  function PasswordException(msg, code) {
    this.name = 'PasswordException';
    this.message = msg;
    this.code = code;
  }
  PasswordException.prototype = new Error();
  PasswordException.constructor = PasswordException;
  return PasswordException;
}();
var UnknownErrorException = function UnknownErrorExceptionClosure() {
  function UnknownErrorException(msg, details) {
    this.name = 'UnknownErrorException';
    this.message = msg;
    this.details = details;
  }
  UnknownErrorException.prototype = new Error();
  UnknownErrorException.constructor = UnknownErrorException;
  return UnknownErrorException;
}();
var InvalidPDFException = function InvalidPDFExceptionClosure() {
  function InvalidPDFException(msg) {
    this.name = 'InvalidPDFException';
    this.message = msg;
  }
  InvalidPDFException.prototype = new Error();
  InvalidPDFException.constructor = InvalidPDFException;
  return InvalidPDFException;
}();
var MissingPDFException = function MissingPDFExceptionClosure() {
  function MissingPDFException(msg) {
    this.name = 'MissingPDFException';
    this.message = msg;
  }
  MissingPDFException.prototype = new Error();
  MissingPDFException.constructor = MissingPDFException;
  return MissingPDFException;
}();
var UnexpectedResponseException = function UnexpectedResponseExceptionClosure() {
  function UnexpectedResponseException(msg, status) {
    this.name = 'UnexpectedResponseException';
    this.message = msg;
    this.status = status;
  }
  UnexpectedResponseException.prototype = new Error();
  UnexpectedResponseException.constructor = UnexpectedResponseException;
  return UnexpectedResponseException;
}();
var NotImplementedException = function NotImplementedExceptionClosure() {
  function NotImplementedException(msg) {
    this.message = msg;
  }
  NotImplementedException.prototype = new Error();
  NotImplementedException.prototype.name = 'NotImplementedException';
  NotImplementedException.constructor = NotImplementedException;
  return NotImplementedException;
}();
var MissingDataException = function MissingDataExceptionClosure() {
  function MissingDataException(begin, end) {
    this.begin = begin;
    this.end = end;
    this.message = 'Missing data [' + begin + ', ' + end + ')';
  }
  MissingDataException.prototype = new Error();
  MissingDataException.prototype.name = 'MissingDataException';
  MissingDataException.constructor = MissingDataException;
  return MissingDataException;
}();
var XRefParseException = function XRefParseExceptionClosure() {
  function XRefParseException(msg) {
    this.message = msg;
  }
  XRefParseException.prototype = new Error();
  XRefParseException.prototype.name = 'XRefParseException';
  XRefParseException.constructor = XRefParseException;
  return XRefParseException;
}();
let FormatError = function FormatErrorClosure() {
  function FormatError(msg) {
    this.message = msg;
  }
  FormatError.prototype = new Error();
  FormatError.prototype.name = 'FormatError';
  FormatError.constructor = FormatError;
  return FormatError;
}();
let AbortException = function AbortExceptionClosure() {
  function AbortException(msg) {
    this.name = 'AbortException';
    this.message = msg;
  }
  AbortException.prototype = new Error();
  AbortException.constructor = AbortException;
  return AbortException;
}();
var NullCharactersRegExp = /\x00/g;
function removeNullCharacters(str) {
  if (typeof str !== 'string') {
    warn('The argument for removeNullCharacters must be a string.');
    return str;
  }
  return str.replace(NullCharactersRegExp, '');
}
function bytesToString(bytes) {
  assert(bytes !== null && typeof bytes === 'object' && bytes.length !== undefined, 'Invalid argument for bytesToString');
  var length = bytes.length;
  var MAX_ARGUMENT_COUNT = 8192;
  if (length < MAX_ARGUMENT_COUNT) {
    return String.fromCharCode.apply(null, bytes);
  }
  var strBuf = [];
  for (var i = 0; i < length; i += MAX_ARGUMENT_COUNT) {
    var chunkEnd = Math.min(i + MAX_ARGUMENT_COUNT, length);
    var chunk = bytes.subarray(i, chunkEnd);
    strBuf.push(String.fromCharCode.apply(null, chunk));
  }
  return strBuf.join('');
}
function stringToBytes(str) {
  assert(typeof str === 'string', 'Invalid argument for stringToBytes');
  var length = str.length;
  var bytes = new Uint8Array(length);
  for (var i = 0; i < length; ++i) {
    bytes[i] = str.charCodeAt(i) & 0xFF;
  }
  return bytes;
}
function arrayByteLength(arr) {
  if (arr.length !== undefined) {
    return arr.length;
  }
  assert(arr.byteLength !== undefined);
  return arr.byteLength;
}
function arraysToBytes(arr) {
  if (arr.length === 1 && arr[0] instanceof Uint8Array) {
    return arr[0];
  }
  var resultLength = 0;
  var i,
      ii = arr.length;
  var item, itemLength;
  for (i = 0; i < ii; i++) {
    item = arr[i];
    itemLength = arrayByteLength(item);
    resultLength += itemLength;
  }
  var pos = 0;
  var data = new Uint8Array(resultLength);
  for (i = 0; i < ii; i++) {
    item = arr[i];
    if (!(item instanceof Uint8Array)) {
      if (typeof item === 'string') {
        item = stringToBytes(item);
      } else {
        item = new Uint8Array(item);
      }
    }
    itemLength = item.byteLength;
    data.set(item, pos);
    pos += itemLength;
  }
  return data;
}
function string32(value) {
  return String.fromCharCode(value >> 24 & 0xff, value >> 16 & 0xff, value >> 8 & 0xff, value & 0xff);
}
function log2(x) {
  if (x <= 0) {
    return 0;
  }
  return Math.ceil(Math.log2(x));
}
function readInt8(data, start) {
  return data[start] << 24 >> 24;
}
function readUint16(data, offset) {
  return data[offset] << 8 | data[offset + 1];
}
function readUint32(data, offset) {
  return (data[offset] << 24 | data[offset + 1] << 16 | data[offset + 2] << 8 | data[offset + 3]) >>> 0;
}
function isLittleEndian() {
  var buffer8 = new Uint8Array(4);
  buffer8[0] = 1;
  var view32 = new Uint32Array(buffer8.buffer, 0, 1);
  return view32[0] === 1;
}
function isEvalSupported() {
  try {
    new Function('');
    return true;
  } catch (e) {
    return false;
  }
}
function getInheritableProperty({ dict, key, getArray = false, stopWhenFound = true }) {
  const LOOP_LIMIT = 100;
  let loopCount = 0;
  let values;
  while (dict) {
    const value = getArray ? dict.getArray(key) : dict.get(key);
    if (value !== undefined) {
      if (stopWhenFound) {
        return value;
      }
      if (!values) {
        values = [];
      }
      values.push(value);
    }
    if (++loopCount > LOOP_LIMIT) {
      warn(`getInheritableProperty: maximum loop count exceeded for "${key}"`);
      break;
    }
    dict = dict.get('Parent');
  }
  return values;
}
var IDENTITY_MATRIX = [1, 0, 0, 1, 0, 0];
var Util = function UtilClosure() {
  function Util() {}
  var rgbBuf = ['rgb(', 0, ',', 0, ',', 0, ')'];
  Util.makeCssRgb = function Util_makeCssRgb(r, g, b) {
    rgbBuf[1] = r;
    rgbBuf[3] = g;
    rgbBuf[5] = b;
    return rgbBuf.join('');
  };
  Util.transform = function Util_transform(m1, m2) {
    return [m1[0] * m2[0] + m1[2] * m2[1], m1[1] * m2[0] + m1[3] * m2[1], m1[0] * m2[2] + m1[2] * m2[3], m1[1] * m2[2] + m1[3] * m2[3], m1[0] * m2[4] + m1[2] * m2[5] + m1[4], m1[1] * m2[4] + m1[3] * m2[5] + m1[5]];
  };
  Util.applyTransform = function Util_applyTransform(p, m) {
    var xt = p[0] * m[0] + p[1] * m[2] + m[4];
    var yt = p[0] * m[1] + p[1] * m[3] + m[5];
    return [xt, yt];
  };
  Util.applyInverseTransform = function Util_applyInverseTransform(p, m) {
    var d = m[0] * m[3] - m[1] * m[2];
    var xt = (p[0] * m[3] - p[1] * m[2] + m[2] * m[5] - m[4] * m[3]) / d;
    var yt = (-p[0] * m[1] + p[1] * m[0] + m[4] * m[1] - m[5] * m[0]) / d;
    return [xt, yt];
  };
  Util.getAxialAlignedBoundingBox = function Util_getAxialAlignedBoundingBox(r, m) {
    var p1 = Util.applyTransform(r, m);
    var p2 = Util.applyTransform(r.slice(2, 4), m);
    var p3 = Util.applyTransform([r[0], r[3]], m);
    var p4 = Util.applyTransform([r[2], r[1]], m);
    return [Math.min(p1[0], p2[0], p3[0], p4[0]), Math.min(p1[1], p2[1], p3[1], p4[1]), Math.max(p1[0], p2[0], p3[0], p4[0]), Math.max(p1[1], p2[1], p3[1], p4[1])];
  };
  Util.inverseTransform = function Util_inverseTransform(m) {
    var d = m[0] * m[3] - m[1] * m[2];
    return [m[3] / d, -m[1] / d, -m[2] / d, m[0] / d, (m[2] * m[5] - m[4] * m[3]) / d, (m[4] * m[1] - m[5] * m[0]) / d];
  };
  Util.apply3dTransform = function Util_apply3dTransform(m, v) {
    return [m[0] * v[0] + m[1] * v[1] + m[2] * v[2], m[3] * v[0] + m[4] * v[1] + m[5] * v[2], m[6] * v[0] + m[7] * v[1] + m[8] * v[2]];
  };
  Util.singularValueDecompose2dScale = function Util_singularValueDecompose2dScale(m) {
    var transpose = [m[0], m[2], m[1], m[3]];
    var a = m[0] * transpose[0] + m[1] * transpose[2];
    var b = m[0] * transpose[1] + m[1] * transpose[3];
    var c = m[2] * transpose[0] + m[3] * transpose[2];
    var d = m[2] * transpose[1] + m[3] * transpose[3];
    var first = (a + d) / 2;
    var second = Math.sqrt((a + d) * (a + d) - 4 * (a * d - c * b)) / 2;
    var sx = first + second || 1;
    var sy = first - second || 1;
    return [Math.sqrt(sx), Math.sqrt(sy)];
  };
  Util.normalizeRect = function Util_normalizeRect(rect) {
    var r = rect.slice(0);
    if (rect[0] > rect[2]) {
      r[0] = rect[2];
      r[2] = rect[0];
    }
    if (rect[1] > rect[3]) {
      r[1] = rect[3];
      r[3] = rect[1];
    }
    return r;
  };
  Util.intersect = function Util_intersect(rect1, rect2) {
    function compare(a, b) {
      return a - b;
    }
    var orderedX = [rect1[0], rect1[2], rect2[0], rect2[2]].sort(compare),
        orderedY = [rect1[1], rect1[3], rect2[1], rect2[3]].sort(compare),
        result = [];
    rect1 = Util.normalizeRect(rect1);
    rect2 = Util.normalizeRect(rect2);
    if (orderedX[0] === rect1[0] && orderedX[1] === rect2[0] || orderedX[0] === rect2[0] && orderedX[1] === rect1[0]) {
      result[0] = orderedX[1];
      result[2] = orderedX[2];
    } else {
      return false;
    }
    if (orderedY[0] === rect1[1] && orderedY[1] === rect2[1] || orderedY[0] === rect2[1] && orderedY[1] === rect1[1]) {
      result[1] = orderedY[1];
      result[3] = orderedY[2];
    } else {
      return false;
    }
    return result;
  };
  var ROMAN_NUMBER_MAP = ['', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM', '', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC', '', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX'];
  Util.toRoman = function Util_toRoman(number, lowerCase) {
    assert(Number.isInteger(number) && number > 0, 'The number should be a positive integer.');
    var pos,
        romanBuf = [];
    while (number >= 1000) {
      number -= 1000;
      romanBuf.push('M');
    }
    pos = number / 100 | 0;
    number %= 100;
    romanBuf.push(ROMAN_NUMBER_MAP[pos]);
    pos = number / 10 | 0;
    number %= 10;
    romanBuf.push(ROMAN_NUMBER_MAP[10 + pos]);
    romanBuf.push(ROMAN_NUMBER_MAP[20 + number]);
    var romanStr = romanBuf.join('');
    return lowerCase ? romanStr.toLowerCase() : romanStr;
  };
  Util.appendToArray = function Util_appendToArray(arr1, arr2) {
    Array.prototype.push.apply(arr1, arr2);
  };
  Util.prependToArray = function Util_prependToArray(arr1, arr2) {
    Array.prototype.unshift.apply(arr1, arr2);
  };
  Util.extendObj = function extendObj(obj1, obj2) {
    for (var key in obj2) {
      obj1[key] = obj2[key];
    }
  };
  Util.inherit = function Util_inherit(sub, base, prototype) {
    sub.prototype = Object.create(base.prototype);
    sub.prototype.constructor = sub;
    for (var prop in prototype) {
      sub.prototype[prop] = prototype[prop];
    }
  };
  Util.loadScript = function Util_loadScript(src, callback) {
    var script = document.createElement('script');
    var loaded = false;
    script.setAttribute('src', src);
    if (callback) {
      script.onload = function () {
        if (!loaded) {
          callback();
        }
        loaded = true;
      };
    }
    document.getElementsByTagName('head')[0].appendChild(script);
  };
  return Util;
}();
var PageViewport = function PageViewportClosure() {
  function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
    this.viewBox = viewBox;
    this.scale = scale;
    this.rotation = rotation;
    this.offsetX = offsetX;
    this.offsetY = offsetY;
    var centerX = (viewBox[2] + viewBox[0]) / 2;
    var centerY = (viewBox[3] + viewBox[1]) / 2;
    var rotateA, rotateB, rotateC, rotateD;
    rotation = rotation % 360;
    rotation = rotation < 0 ? rotation + 360 : rotation;
    switch (rotation) {
      case 180:
        rotateA = -1;
        rotateB = 0;
        rotateC = 0;
        rotateD = 1;
        break;
      case 90:
        rotateA = 0;
        rotateB = 1;
        rotateC = 1;
        rotateD = 0;
        break;
      case 270:
        rotateA = 0;
        rotateB = -1;
        rotateC = -1;
        rotateD = 0;
        break;
      default:
        rotateA = 1;
        rotateB = 0;
        rotateC = 0;
        rotateD = -1;
        break;
    }
    if (dontFlip) {
      rotateC = -rotateC;
      rotateD = -rotateD;
    }
    var offsetCanvasX, offsetCanvasY;
    var width, height;
    if (rotateA === 0) {
      offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
      offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
      width = Math.abs(viewBox[3] - viewBox[1]) * scale;
      height = Math.abs(viewBox[2] - viewBox[0]) * scale;
    } else {
      offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
      offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
      width = Math.abs(viewBox[2] - viewBox[0]) * scale;
      height = Math.abs(viewBox[3] - viewBox[1]) * scale;
    }
    this.transform = [rotateA * scale, rotateB * scale, rotateC * scale, rotateD * scale, offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY, offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY];
    this.width = width;
    this.height = height;
    this.fontScale = scale;
  }
  PageViewport.prototype = {
    clone: function PageViewPort_clone(args) {
      args = args || {};
      var scale = 'scale' in args ? args.scale : this.scale;
      var rotation = 'rotation' in args ? args.rotation : this.rotation;
      return new PageViewport(this.viewBox.slice(), scale, rotation, this.offsetX, this.offsetY, args.dontFlip);
    },
    convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
      return Util.applyTransform([x, y], this.transform);
    },
    convertToViewportRectangle: function PageViewport_convertToViewportRectangle(rect) {
      var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
      var br = Util.applyTransform([rect[2], rect[3]], this.transform);
      return [tl[0], tl[1], br[0], br[1]];
    },
    convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
      return Util.applyInverseTransform([x, y], this.transform);
    }
  };
  return PageViewport;
}();
var PDFStringTranslateTable = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x2022, 0x2020, 0x2021, 0x2026, 0x2014, 0x2013, 0x192, 0x2044, 0x2039, 0x203A, 0x2212, 0x2030, 0x201E, 0x201C, 0x201D, 0x2018, 0x2019, 0x201A, 0x2122, 0xFB01, 0xFB02, 0x141, 0x152, 0x160, 0x178, 0x17D, 0x131, 0x142, 0x153, 0x161, 0x17E, 0, 0x20AC];
function stringToPDFString(str) {
  var i,
      n = str.length,
      strBuf = [];
  if (str[0] === '\xFE' && str[1] === '\xFF') {
    for (i = 2; i < n; i += 2) {
      strBuf.push(String.fromCharCode(str.charCodeAt(i) << 8 | str.charCodeAt(i + 1)));
    }
  } else {
    for (i = 0; i < n; ++i) {
      var code = PDFStringTranslateTable[str.charCodeAt(i)];
      strBuf.push(code ? String.fromCharCode(code) : str.charAt(i));
    }
  }
  return strBuf.join('');
}
function stringToUTF8String(str) {
  return decodeURIComponent(escape(str));
}
function utf8StringToString(str) {
  return unescape(encodeURIComponent(str));
}
function isEmptyObj(obj) {
  for (var key in obj) {
    return false;
  }
  return true;
}
function isBool(v) {
  return typeof v === 'boolean';
}
function isNum(v) {
  return typeof v === 'number';
}
function isString(v) {
  return typeof v === 'string';
}
function isArrayBuffer(v) {
  return typeof v === 'object' && v !== null && v.byteLength !== undefined;
}
function isSpace(ch) {
  return ch === 0x20 || ch === 0x09 || ch === 0x0D || ch === 0x0A;
}
function createPromiseCapability() {
  var capability = {};
  capability.promise = new Promise(function (resolve, reject) {
    capability.resolve = resolve;
    capability.reject = reject;
  });
  return capability;
}
var createBlob = function createBlob(data, contentType) {
  if (typeof Blob !== 'undefined') {
    return new Blob([data], { type: contentType });
  }
  throw new Error('The "Blob" constructor is not supported.');
};
var createObjectURL = function createObjectURLClosure() {
  var digits = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
  return function createObjectURL(data, contentType, forceDataSchema = false) {
    if (!forceDataSchema && URL.createObjectURL) {
      var blob = createBlob(data, contentType);
      return URL.createObjectURL(blob);
    }
    var buffer = 'data:' + contentType + ';base64,';
    for (var i = 0, ii = data.length; i < ii; i += 3) {
      var b1 = data[i] & 0xFF;
      var b2 = data[i + 1] & 0xFF;
      var b3 = data[i + 2] & 0xFF;
      var d1 = b1 >> 2,
          d2 = (b1 & 3) << 4 | b2 >> 4;
      var d3 = i + 1 < ii ? (b2 & 0xF) << 2 | b3 >> 6 : 64;
      var d4 = i + 2 < ii ? b3 & 0x3F : 64;
      buffer += digits[d1] + digits[d2] + digits[d3] + digits[d4];
    }
    return buffer;
  };
}();
function resolveCall(fn, args, thisArg = null) {
  if (!fn) {
    return Promise.resolve(undefined);
  }
  return new Promise((resolve, reject) => {
    resolve(fn.apply(thisArg, args));
  });
}
function wrapReason(reason) {
  if (typeof reason !== 'object') {
    return reason;
  }
  switch (reason.name) {
    case 'AbortException':
      return new AbortException(reason.message);
    case 'MissingPDFException':
      return new MissingPDFException(reason.message);
    case 'UnexpectedResponseException':
      return new UnexpectedResponseException(reason.message, reason.status);
    default:
      return new UnknownErrorException(reason.message, reason.details);
  }
}
function makeReasonSerializable(reason) {
  if (!(reason instanceof Error) || reason instanceof AbortException || reason instanceof MissingPDFException || reason instanceof UnexpectedResponseException || reason instanceof UnknownErrorException) {
    return reason;
  }
  return new UnknownErrorException(reason.message, reason.toString());
}
function resolveOrReject(capability, success, reason) {
  if (success) {
    capability.resolve();
  } else {
    capability.reject(reason);
  }
}
function finalize(promise) {
  return Promise.resolve(promise).catch(() => {});
}
function MessageHandler(sourceName, targetName, comObj) {
  this.sourceName = sourceName;
  this.targetName = targetName;
  this.comObj = comObj;
  this.callbackId = 1;
  this.streamId = 1;
  this.postMessageTransfers = true;
  this.streamSinks = Object.create(null);
  this.streamControllers = Object.create(null);
  let callbacksCapabilities = this.callbacksCapabilities = Object.create(null);
  let ah = this.actionHandler = Object.create(null);
  this._onComObjOnMessage = event => {
    let data = event.data;
    if (data.targetName !== this.sourceName) {
      return;
    }
    if (data.stream) {
      this._processStreamMessage(data);
    } else if (data.isReply) {
      let callbackId = data.callbackId;
      if (data.callbackId in callbacksCapabilities) {
        let callback = callbacksCapabilities[callbackId];
        delete callbacksCapabilities[callbackId];
        if ('error' in data) {
          callback.reject(wrapReason(data.error));
        } else {
          callback.resolve(data.data);
        }
      } else {
        throw new Error(`Cannot resolve callback ${callbackId}`);
      }
    } else if (data.action in ah) {
      let action = ah[data.action];
      if (data.callbackId) {
        let sourceName = this.sourceName;
        let targetName = data.sourceName;
        Promise.resolve().then(function () {
          return action[0].call(action[1], data.data);
        }).then(result => {
          comObj.postMessage({
            sourceName,
            targetName,
            isReply: true,
            callbackId: data.callbackId,
            data: result
          });
        }, reason => {
          comObj.postMessage({
            sourceName,
            targetName,
            isReply: true,
            callbackId: data.callbackId,
            error: makeReasonSerializable(reason)
          });
        });
      } else if (data.streamId) {
        this._createStreamSink(data);
      } else {
        action[0].call(action[1], data.data);
      }
    } else {
      throw new Error(`Unknown action from worker: ${data.action}`);
    }
  };
  comObj.addEventListener('message', this._onComObjOnMessage);
}
MessageHandler.prototype = {
  on(actionName, handler, scope) {
    var ah = this.actionHandler;
    if (ah[actionName]) {
      throw new Error(`There is already an actionName called "${actionName}"`);
    }
    ah[actionName] = [handler, scope];
  },
  send(actionName, data, transfers) {
    var message = {
      sourceName: this.sourceName,
      targetName: this.targetName,
      action: actionName,
      data
    };
    this.postMessage(message, transfers);
  },
  sendWithPromise(actionName, data, transfers) {
    var callbackId = this.callbackId++;
    var message = {
      sourceName: this.sourceName,
      targetName: this.targetName,
      action: actionName,
      data,
      callbackId
    };
    var capability = createPromiseCapability();
    this.callbacksCapabilities[callbackId] = capability;
    try {
      this.postMessage(message, transfers);
    } catch (e) {
      capability.reject(e);
    }
    return capability.promise;
  },
  sendWithStream(actionName, data, queueingStrategy, transfers) {
    let streamId = this.streamId++;
    let sourceName = this.sourceName;
    let targetName = this.targetName;
    return new _streams_polyfill.ReadableStream({
      start: controller => {
        let startCapability = createPromiseCapability();
        this.streamControllers[streamId] = {
          controller,
          startCall: startCapability,
          isClosed: false
        };
        this.postMessage({
          sourceName,
          targetName,
          action: actionName,
          streamId,
          data,
          desiredSize: controller.desiredSize
        });
        return startCapability.promise;
      },
      pull: controller => {
        let pullCapability = createPromiseCapability();
        this.streamControllers[streamId].pullCall = pullCapability;
        this.postMessage({
          sourceName,
          targetName,
          stream: 'pull',
          streamId,
          desiredSize: controller.desiredSize
        });
        return pullCapability.promise;
      },
      cancel: reason => {
        let cancelCapability = createPromiseCapability();
        this.streamControllers[streamId].cancelCall = cancelCapability;
        this.streamControllers[streamId].isClosed = true;
        this.postMessage({
          sourceName,
          targetName,
          stream: 'cancel',
          reason,
          streamId
        });
        return cancelCapability.promise;
      }
    }, queueingStrategy);
  },
  _createStreamSink(data) {
    let self = this;
    let action = this.actionHandler[data.action];
    let streamId = data.streamId;
    let desiredSize = data.desiredSize;
    let sourceName = this.sourceName;
    let targetName = data.sourceName;
    let capability = createPromiseCapability();
    let sendStreamRequest = ({ stream, chunk, transfers, success, reason }) => {
      this.postMessage({
        sourceName,
        targetName,
        stream,
        streamId,
        chunk,
        success,
        reason
      }, transfers);
    };
    let streamSink = {
      enqueue(chunk, size = 1, transfers) {
        if (this.isCancelled) {
          return;
        }
        let lastDesiredSize = this.desiredSize;
        this.desiredSize -= size;
        if (lastDesiredSize > 0 && this.desiredSize <= 0) {
          this.sinkCapability = createPromiseCapability();
          this.ready = this.sinkCapability.promise;
        }
        sendStreamRequest({
          stream: 'enqueue',
          chunk,
          transfers
        });
      },
      close() {
        if (this.isCancelled) {
          return;
        }
        this.isCancelled = true;
        sendStreamRequest({ stream: 'close' });
        delete self.streamSinks[streamId];
      },
      error(reason) {
        if (this.isCancelled) {
          return;
        }
        this.isCancelled = true;
        sendStreamRequest({
          stream: 'error',
          reason
        });
      },
      sinkCapability: capability,
      onPull: null,
      onCancel: null,
      isCancelled: false,
      desiredSize,
      ready: null
    };
    streamSink.sinkCapability.resolve();
    streamSink.ready = streamSink.sinkCapability.promise;
    this.streamSinks[streamId] = streamSink;
    resolveCall(action[0], [data.data, streamSink], action[1]).then(() => {
      sendStreamRequest({
        stream: 'start_complete',
        success: true
      });
    }, reason => {
      sendStreamRequest({
        stream: 'start_complete',
        success: false,
        reason
      });
    });
  },
  _processStreamMessage(data) {
    let sourceName = this.sourceName;
    let targetName = data.sourceName;
    let streamId = data.streamId;
    let sendStreamResponse = ({ stream, success, reason }) => {
      this.comObj.postMessage({
        sourceName,
        targetName,
        stream,
        success,
        streamId,
        reason
      });
    };
    let deleteStreamController = () => {
      Promise.all([this.streamControllers[data.streamId].startCall, this.streamControllers[data.streamId].pullCall, this.streamControllers[data.streamId].cancelCall].map(function (capability) {
        return capability && finalize(capability.promise);
      })).then(() => {
        delete this.streamControllers[data.streamId];
      });
    };
    switch (data.stream) {
      case 'start_complete':
        resolveOrReject(this.streamControllers[data.streamId].startCall, data.success, wrapReason(data.reason));
        break;
      case 'pull_complete':
        resolveOrReject(this.streamControllers[data.streamId].pullCall, data.success, wrapReason(data.reason));
        break;
      case 'pull':
        if (!this.streamSinks[data.streamId]) {
          sendStreamResponse({
            stream: 'pull_complete',
            success: true
          });
          break;
        }
        if (this.streamSinks[data.streamId].desiredSize <= 0 && data.desiredSize > 0) {
          this.streamSinks[data.streamId].sinkCapability.resolve();
        }
        this.streamSinks[data.streamId].desiredSize = data.desiredSize;
        resolveCall(this.streamSinks[data.streamId].onPull).then(() => {
          sendStreamResponse({
            stream: 'pull_complete',
            success: true
          });
        }, reason => {
          sendStreamResponse({
            stream: 'pull_complete',
            success: false,
            reason
          });
        });
        break;
      case 'enqueue':
        assert(this.streamControllers[data.streamId], 'enqueue should have stream controller');
        if (!this.streamControllers[data.streamId].isClosed) {
          this.streamControllers[data.streamId].controller.enqueue(data.chunk);
        }
        break;
      case 'close':
        assert(this.streamControllers[data.streamId], 'close should have stream controller');
        if (this.streamControllers[data.streamId].isClosed) {
          break;
        }
        this.streamControllers[data.streamId].isClosed = true;
        this.streamControllers[data.streamId].controller.close();
        deleteStreamController();
        break;
      case 'error':
        assert(this.streamControllers[data.streamId], 'error should have stream controller');
        this.streamControllers[data.streamId].controller.error(wrapReason(data.reason));
        deleteStreamController();
        break;
      case 'cancel_complete':
        resolveOrReject(this.streamControllers[data.streamId].cancelCall, data.success, wrapReason(data.reason));
        deleteStreamController();
        break;
      case 'cancel':
        if (!this.streamSinks[data.streamId]) {
          break;
        }
        resolveCall(this.streamSinks[data.streamId].onCancel, [wrapReason(data.reason)]).then(() => {
          sendStreamResponse({
            stream: 'cancel_complete',
            success: true
          });
        }, reason => {
          sendStreamResponse({
            stream: 'cancel_complete',
            success: false,
            reason
          });
        });
        this.streamSinks[data.streamId].sinkCapability.reject(wrapReason(data.reason));
        this.streamSinks[data.streamId].isCancelled = true;
        delete this.streamSinks[data.streamId];
        break;
      default:
        throw new Error('Unexpected stream case');
    }
  },
  postMessage(message, transfers) {
    if (transfers && this.postMessageTransfers) {
      this.comObj.postMessage(message, transfers);
    } else {
      this.comObj.postMessage(message);
    }
  },
  destroy() {
    this.comObj.removeEventListener('message', this._onComObjOnMessage);
  }
};
exports.FONT_IDENTITY_MATRIX = FONT_IDENTITY_MATRIX;
exports.IDENTITY_MATRIX = IDENTITY_MATRIX;
exports.OPS = OPS;
exports.VerbosityLevel = VerbosityLevel;
exports.UNSUPPORTED_FEATURES = UNSUPPORTED_FEATURES;
exports.AnnotationBorderStyleType = AnnotationBorderStyleType;
exports.AnnotationFieldFlag = AnnotationFieldFlag;
exports.AnnotationFlag = AnnotationFlag;
exports.AnnotationType = AnnotationType;
exports.FontType = FontType;
exports.ImageKind = ImageKind;
exports.CMapCompressionType = CMapCompressionType;
exports.AbortException = AbortException;
exports.InvalidPDFException = InvalidPDFException;
exports.MessageHandler = MessageHandler;
exports.MissingDataException = MissingDataException;
exports.MissingPDFException = MissingPDFException;
exports.NativeImageDecoding = NativeImageDecoding;
exports.NotImplementedException = NotImplementedException;
exports.PageViewport = PageViewport;
exports.PasswordException = PasswordException;
exports.PasswordResponses = PasswordResponses;
exports.StreamType = StreamType;
exports.TextRenderingMode = TextRenderingMode;
exports.UnexpectedResponseException = UnexpectedResponseException;
exports.UnknownErrorException = UnknownErrorException;
exports.Util = Util;
exports.XRefParseException = XRefParseException;
exports.FormatError = FormatError;
exports.arrayByteLength = arrayByteLength;
exports.arraysToBytes = arraysToBytes;
exports.assert = assert;
exports.bytesToString = bytesToString;
exports.createBlob = createBlob;
exports.createPromiseCapability = createPromiseCapability;
exports.createObjectURL = createObjectURL;
exports.deprecated = deprecated;
exports.getInheritableProperty = getInheritableProperty;
exports.getLookupTableFactory = getLookupTableFactory;
exports.getVerbosityLevel = getVerbosityLevel;
exports.info = info;
exports.isArrayBuffer = isArrayBuffer;
exports.isBool = isBool;
exports.isEmptyObj = isEmptyObj;
exports.isNum = isNum;
exports.isString = isString;
exports.isSpace = isSpace;
exports.isSameOrigin = isSameOrigin;
exports.createValidAbsoluteUrl = createValidAbsoluteUrl;
exports.isLittleEndian = isLittleEndian;
exports.isEvalSupported = isEvalSupported;
exports.log2 = log2;
exports.readInt8 = readInt8;
exports.readUint16 = readUint16;
exports.readUint32 = readUint32;
exports.removeNullCharacters = removeNullCharacters;
exports.ReadableStream = _streams_polyfill.ReadableStream;
exports.setVerbosityLevel = setVerbosityLevel;
exports.shadow = shadow;
exports.string32 = string32;
exports.stringToBytes = stringToBytes;
exports.stringToPDFString = stringToPDFString;
exports.stringToUTF8String = stringToUTF8String;
exports.utf8StringToString = utf8StringToString;
exports.warn = warn;
exports.unreachable = unreachable;

/***/ }),
/* 1 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.DummyStatTimer = exports.StatTimer = exports.SimpleXMLParser = exports.DOMSVGFactory = exports.DOMCMapReaderFactory = exports.DOMCanvasFactory = exports.DEFAULT_LINK_REL = exports.LinkTarget = exports.getFilenameFromUrl = exports.addLinkAttributes = exports.RenderingCancelledException = undefined;

var _util = __w_pdfjs_require__(0);

const DEFAULT_LINK_REL = 'noopener noreferrer nofollow';
const SVG_NS = 'http://www.w3.org/2000/svg';
class DOMCanvasFactory {
  create(width, height) {
    if (width <= 0 || height <= 0) {
      throw new Error('invalid canvas size');
    }
    let canvas = document.createElement('canvas');
    let context = canvas.getContext('2d');
    canvas.width = width;
    canvas.height = height;
    return {
      canvas,
      context
    };
  }
  reset(canvasAndContext, width, height) {
    if (!canvasAndContext.canvas) {
      throw new Error('canvas is not specified');
    }
    if (width <= 0 || height <= 0) {
      throw new Error('invalid canvas size');
    }
    canvasAndContext.canvas.width = width;
    canvasAndContext.canvas.height = height;
  }
  destroy(canvasAndContext) {
    if (!canvasAndContext.canvas) {
      throw new Error('canvas is not specified');
    }
    canvasAndContext.canvas.width = 0;
    canvasAndContext.canvas.height = 0;
    canvasAndContext.canvas = null;
    canvasAndContext.context = null;
  }
}
class DOMCMapReaderFactory {
  constructor({ baseUrl = null, isCompressed = false }) {
    this.baseUrl = baseUrl;
    this.isCompressed = isCompressed;
  }
  fetch({ name }) {
    if (!this.baseUrl) {
      return Promise.reject(new Error('The CMap "baseUrl" parameter must be specified, ensure that ' + 'the "cMapUrl" and "cMapPacked" API parameters are provided.'));
    }
    if (!name) {
      return Promise.reject(new Error('CMap name must be specified.'));
    }
    return new Promise((resolve, reject) => {
      let url = this.baseUrl + name + (this.isCompressed ? '.bcmap' : '');
      let request = new XMLHttpRequest();
      request.open('GET', url, true);
      if (this.isCompressed) {
        request.responseType = 'arraybuffer';
      }
      request.onreadystatechange = () => {
        if (request.readyState !== XMLHttpRequest.DONE) {
          return;
        }
        if (request.status === 200 || request.status === 0) {
          let data;
          if (this.isCompressed && request.response) {
            data = new Uint8Array(request.response);
          } else if (!this.isCompressed && request.responseText) {
            data = (0, _util.stringToBytes)(request.responseText);
          }
          if (data) {
            resolve({
              cMapData: data,
              compressionType: this.isCompressed ? _util.CMapCompressionType.BINARY : _util.CMapCompressionType.NONE
            });
            return;
          }
        }
        reject(new Error('Unable to load ' + (this.isCompressed ? 'binary ' : '') + 'CMap at: ' + url));
      };
      request.send(null);
    });
  }
}
class DOMSVGFactory {
  create(width, height) {
    (0, _util.assert)(width > 0 && height > 0, 'Invalid SVG dimensions');
    let svg = document.createElementNS(SVG_NS, 'svg:svg');
    svg.setAttribute('version', '1.1');
    svg.setAttribute('width', width + 'px');
    svg.setAttribute('height', height + 'px');
    svg.setAttribute('preserveAspectRatio', 'none');
    svg.setAttribute('viewBox', '0 0 ' + width + ' ' + height);
    return svg;
  }
  createElement(type) {
    (0, _util.assert)(typeof type === 'string', 'Invalid SVG element type');
    return document.createElementNS(SVG_NS, type);
  }
}
class SimpleDOMNode {
  constructor(nodeName, nodeValue) {
    this.nodeName = nodeName;
    this.nodeValue = nodeValue;
    Object.defineProperty(this, 'parentNode', {
      value: null,
      writable: true
    });
  }
  get firstChild() {
    return this.childNodes[0];
  }
  get nextSibling() {
    let index = this.parentNode.childNodes.indexOf(this);
    return this.parentNode.childNodes[index + 1];
  }
  get textContent() {
    if (!this.childNodes) {
      return this.nodeValue || '';
    }
    return this.childNodes.map(function (child) {
      return child.textContent;
    }).join('');
  }
  hasChildNodes() {
    return this.childNodes && this.childNodes.length > 0;
  }
}
class SimpleXMLParser {
  parseFromString(data) {
    let nodes = [];
    data = data.replace(/<\?[\s\S]*?\?>|<!--[\s\S]*?-->/g, '').trim();
    data = data.replace(/<!DOCTYPE[^>\[]+(\[[^\]]+)?[^>]+>/g, '').trim();
    data = data.replace(/>([^<][\s\S]*?)</g, (all, text) => {
      let length = nodes.length;
      let node = new SimpleDOMNode('#text', this._decodeXML(text));
      nodes.push(node);
      if (node.textContent.trim().length === 0) {
        return '><';
      }
      return '>' + length + ',<';
    });
    data = data.replace(/<!\[CDATA\[([\s\S]*?)\]\]>/g, function (all, text) {
      let length = nodes.length;
      let node = new SimpleDOMNode('#text', text);
      nodes.push(node);
      return length + ',';
    });
    let regex = /<([\w\:]+)((?:[\s\w:=]|'[^']*'|"[^"]*")*)(?:\/>|>([\d,]*)<\/[^>]+>)/g;
    let lastLength;
    do {
      lastLength = nodes.length;
      data = data.replace(regex, function (all, name, attrs, data) {
        let length = nodes.length;
        let node = new SimpleDOMNode(name);
        let children = [];
        if (data) {
          data = data.split(',');
          data.pop();
          data.forEach(function (child) {
            let childNode = nodes[+child];
            childNode.parentNode = node;
            children.push(childNode);
          });
        }
        node.childNodes = children;
        nodes.push(node);
        return length + ',';
      });
    } while (lastLength < nodes.length);
    return { documentElement: nodes.pop() };
  }
  _decodeXML(text) {
    if (!text.includes('&')) {
      return text;
    }
    return text.replace(/&(#(x[0-9a-f]+|\d+)|\w+);/gi, function (all, entityName, number) {
      if (number) {
        if (number[0] === 'x') {
          number = parseInt(number.substring(1), 16);
        } else {
          number = +number;
        }
        return String.fromCharCode(number);
      }
      switch (entityName) {
        case 'amp':
          return '&';
        case 'lt':
          return '<';
        case 'gt':
          return '>';
        case 'quot':
          return '\"';
        case 'apos':
          return '\'';
      }
      return '&' + entityName + ';';
    });
  }
}
var RenderingCancelledException = function RenderingCancelledException() {
  function RenderingCancelledException(msg, type) {
    this.message = msg;
    this.type = type;
  }
  RenderingCancelledException.prototype = new Error();
  RenderingCancelledException.prototype.name = 'RenderingCancelledException';
  RenderingCancelledException.constructor = RenderingCancelledException;
  return RenderingCancelledException;
}();
const LinkTarget = {
  NONE: 0,
  SELF: 1,
  BLANK: 2,
  PARENT: 3,
  TOP: 4
};
const LinkTargetStringMap = ['', '_self', '_blank', '_parent', '_top'];
function addLinkAttributes(link, { url, target, rel } = {}) {
  link.href = link.title = url ? (0, _util.removeNullCharacters)(url) : '';
  if (url) {
    const LinkTargetValues = Object.values(LinkTarget);
    let targetIndex = LinkTargetValues.includes(target) ? target : LinkTarget.NONE;
    link.target = LinkTargetStringMap[targetIndex];
    link.rel = typeof rel === 'string' ? rel : DEFAULT_LINK_REL;
  }
}
function getFilenameFromUrl(url) {
  var anchor = url.indexOf('#');
  var query = url.indexOf('?');
  var end = Math.min(anchor > 0 ? anchor : url.length, query > 0 ? query : url.length);
  return url.substring(url.lastIndexOf('/', end) + 1, end);
}
class StatTimer {
  constructor(enable = true) {
    this.enabled = !!enable;
    this.started = Object.create(null);
    this.times = [];
  }
  time(name) {
    if (!this.enabled) {
      return;
    }
    if (name in this.started) {
      (0, _util.warn)('Timer is already running for ' + name);
    }
    this.started[name] = Date.now();
  }
  timeEnd(name) {
    if (!this.enabled) {
      return;
    }
    if (!(name in this.started)) {
      (0, _util.warn)('Timer has not been started for ' + name);
    }
    this.times.push({
      'name': name,
      'start': this.started[name],
      'end': Date.now()
    });
    delete this.started[name];
  }
  toString() {
    let times = this.times;
    let out = '',
        longest = 0;
    for (let i = 0, ii = times.length; i < ii; ++i) {
      let name = times[i]['name'];
      if (name.length > longest) {
        longest = name.length;
      }
    }
    for (let i = 0, ii = times.length; i < ii; ++i) {
      let span = times[i];
      let duration = span.end - span.start;
      out += `${span['name'].padEnd(longest)} ${duration}ms\n`;
    }
    return out;
  }
}
class DummyStatTimer {
  constructor() {
    (0, _util.unreachable)('Cannot initialize DummyStatTimer.');
  }
  static time(name) {}
  static timeEnd(name) {}
  static toString() {
    return '';
  }
}
exports.RenderingCancelledException = RenderingCancelledException;
exports.addLinkAttributes = addLinkAttributes;
exports.getFilenameFromUrl = getFilenameFromUrl;
exports.LinkTarget = LinkTarget;
exports.DEFAULT_LINK_REL = DEFAULT_LINK_REL;
exports.DOMCanvasFactory = DOMCanvasFactory;
exports.DOMCMapReaderFactory = DOMCMapReaderFactory;
exports.DOMSVGFactory = DOMSVGFactory;
exports.SimpleXMLParser = SimpleXMLParser;
exports.StatTimer = StatTimer;
exports.DummyStatTimer = DummyStatTimer;

/***/ }),
/* 2 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


module.exports = typeof window !== 'undefined' && window.Math === Math ? window : typeof global !== 'undefined' && global.Math === Math ? global : typeof self !== 'undefined' && self.Math === Math ? self : {};

/***/ }),
/* 3 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
let compatibilityParams = Object.create(null);
;
const apiCompatibilityParams = Object.freeze(compatibilityParams);
exports.apiCompatibilityParams = apiCompatibilityParams;

/***/ }),
/* 4 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
const GlobalWorkerOptions = Object.create(null);
GlobalWorkerOptions.workerPort = GlobalWorkerOptions.workerPort === undefined ? null : GlobalWorkerOptions.workerPort;
GlobalWorkerOptions.workerSrc = GlobalWorkerOptions.workerSrc === undefined ? '' : GlobalWorkerOptions.workerSrc;
exports.GlobalWorkerOptions = GlobalWorkerOptions;

/***/ }),
/* 5 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


var pdfjsVersion = '2.0.447';
var pdfjsBuild = 'c0b22da0';
var pdfjsSharedUtil = __w_pdfjs_require__(0);
var pdfjsDisplayAPI = __w_pdfjs_require__(9);
var pdfjsDisplayTextLayer = __w_pdfjs_require__(16);
var pdfjsDisplayAnnotationLayer = __w_pdfjs_require__(17);
var pdfjsDisplayDOMUtils = __w_pdfjs_require__(1);
var pdfjsDisplaySVG = __w_pdfjs_require__(18);
let pdfjsDisplayWorkerOptions = __w_pdfjs_require__(4);
let pdfjsDisplayAPICompatibility = __w_pdfjs_require__(3);
;
exports.build = pdfjsDisplayAPI.build;
exports.version = pdfjsDisplayAPI.version;
exports.getDocument = pdfjsDisplayAPI.getDocument;
exports.LoopbackPort = pdfjsDisplayAPI.LoopbackPort;
exports.PDFDataRangeTransport = pdfjsDisplayAPI.PDFDataRangeTransport;
exports.PDFWorker = pdfjsDisplayAPI.PDFWorker;
exports.renderTextLayer = pdfjsDisplayTextLayer.renderTextLayer;
exports.AnnotationLayer = pdfjsDisplayAnnotationLayer.AnnotationLayer;
exports.createPromiseCapability = pdfjsSharedUtil.createPromiseCapability;
exports.PasswordResponses = pdfjsSharedUtil.PasswordResponses;
exports.InvalidPDFException = pdfjsSharedUtil.InvalidPDFException;
exports.MissingPDFException = pdfjsSharedUtil.MissingPDFException;
exports.SVGGraphics = pdfjsDisplaySVG.SVGGraphics;
exports.NativeImageDecoding = pdfjsSharedUtil.NativeImageDecoding;
exports.UnexpectedResponseException = pdfjsSharedUtil.UnexpectedResponseException;
exports.OPS = pdfjsSharedUtil.OPS;
exports.VerbosityLevel = pdfjsSharedUtil.VerbosityLevel;
exports.UNSUPPORTED_FEATURES = pdfjsSharedUtil.UNSUPPORTED_FEATURES;
exports.createValidAbsoluteUrl = pdfjsSharedUtil.createValidAbsoluteUrl;
exports.createObjectURL = pdfjsSharedUtil.createObjectURL;
exports.removeNullCharacters = pdfjsSharedUtil.removeNullCharacters;
exports.shadow = pdfjsSharedUtil.shadow;
exports.createBlob = pdfjsSharedUtil.createBlob;
exports.Util = pdfjsSharedUtil.Util;
exports.RenderingCancelledException = pdfjsDisplayDOMUtils.RenderingCancelledException;
exports.getFilenameFromUrl = pdfjsDisplayDOMUtils.getFilenameFromUrl;
exports.LinkTarget = pdfjsDisplayDOMUtils.LinkTarget;
exports.addLinkAttributes = pdfjsDisplayDOMUtils.addLinkAttributes;
exports.GlobalWorkerOptions = pdfjsDisplayWorkerOptions.GlobalWorkerOptions;
exports.apiCompatibilityParams = pdfjsDisplayAPICompatibility.apiCompatibilityParams;

/***/ }),
/* 6 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


const globalScope = __w_pdfjs_require__(2);
;

/***/ }),
/* 7 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


let isReadableStreamSupported = false;
if (typeof ReadableStream !== 'undefined') {
  try {
    new ReadableStream({
      start(controller) {
        controller.close();
      }
    });
    isReadableStreamSupported = true;
  } catch (e) {}
}
if (isReadableStreamSupported) {
  exports.ReadableStream = ReadableStream;
} else {
  exports.ReadableStream = __w_pdfjs_require__(8).ReadableStream;
}

/***/ }),
/* 8 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


(function (e, a) {
  for (var i in a) e[i] = a[i];
})(exports, function (modules) {
  var installedModules = {};
  function __w_pdfjs_require__(moduleId) {
    if (installedModules[moduleId]) return installedModules[moduleId].exports;
    var module = installedModules[moduleId] = {
      i: moduleId,
      l: false,
      exports: {}
    };
    modules[moduleId].call(module.exports, module, module.exports, __w_pdfjs_require__);
    module.l = true;
    return module.exports;
  }
  __w_pdfjs_require__.m = modules;
  __w_pdfjs_require__.c = installedModules;
  __w_pdfjs_require__.i = function (value) {
    return value;
  };
  __w_pdfjs_require__.d = function (exports, name, getter) {
    if (!__w_pdfjs_require__.o(exports, name)) {
      Object.defineProperty(exports, name, {
        configurable: false,
        enumerable: true,
        get: getter
      });
    }
  };
  __w_pdfjs_require__.n = function (module) {
    var getter = module && module.__esModule ? function getDefault() {
      return module['default'];
    } : function getModuleExports() {
      return module;
    };
    __w_pdfjs_require__.d(getter, 'a', getter);
    return getter;
  };
  __w_pdfjs_require__.o = function (object, property) {
    return Object.prototype.hasOwnProperty.call(object, property);
  };
  __w_pdfjs_require__.p = "";
  return __w_pdfjs_require__(__w_pdfjs_require__.s = 7);
}([function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
    return typeof obj;
  } : function (obj) {
    return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
  };
  var _require = __w_pdfjs_require__(1),
      assert = _require.assert;
  function IsPropertyKey(argument) {
    return typeof argument === 'string' || (typeof argument === 'undefined' ? 'undefined' : _typeof(argument)) === 'symbol';
  }
  exports.typeIsObject = function (x) {
    return (typeof x === 'undefined' ? 'undefined' : _typeof(x)) === 'object' && x !== null || typeof x === 'function';
  };
  exports.createDataProperty = function (o, p, v) {
    assert(exports.typeIsObject(o));
    Object.defineProperty(o, p, {
      value: v,
      writable: true,
      enumerable: true,
      configurable: true
    });
  };
  exports.createArrayFromList = function (elements) {
    return elements.slice();
  };
  exports.ArrayBufferCopy = function (dest, destOffset, src, srcOffset, n) {
    new Uint8Array(dest).set(new Uint8Array(src, srcOffset, n), destOffset);
  };
  exports.CreateIterResultObject = function (value, done) {
    assert(typeof done === 'boolean');
    var obj = {};
    Object.defineProperty(obj, 'value', {
      value: value,
      enumerable: true,
      writable: true,
      configurable: true
    });
    Object.defineProperty(obj, 'done', {
      value: done,
      enumerable: true,
      writable: true,
      configurable: true
    });
    return obj;
  };
  exports.IsFiniteNonNegativeNumber = function (v) {
    if (Number.isNaN(v)) {
      return false;
    }
    if (v === Infinity) {
      return false;
    }
    if (v < 0) {
      return false;
    }
    return true;
  };
  function Call(F, V, args) {
    if (typeof F !== 'function') {
      throw new TypeError('Argument is not a function');
    }
    return Function.prototype.apply.call(F, V, args);
  }
  exports.InvokeOrNoop = function (O, P, args) {
    assert(O !== undefined);
    assert(IsPropertyKey(P));
    assert(Array.isArray(args));
    var method = O[P];
    if (method === undefined) {
      return undefined;
    }
    return Call(method, O, args);
  };
  exports.PromiseInvokeOrNoop = function (O, P, args) {
    assert(O !== undefined);
    assert(IsPropertyKey(P));
    assert(Array.isArray(args));
    try {
      return Promise.resolve(exports.InvokeOrNoop(O, P, args));
    } catch (returnValueE) {
      return Promise.reject(returnValueE);
    }
  };
  exports.PromiseInvokeOrPerformFallback = function (O, P, args, F, argsF) {
    assert(O !== undefined);
    assert(IsPropertyKey(P));
    assert(Array.isArray(args));
    assert(Array.isArray(argsF));
    var method = void 0;
    try {
      method = O[P];
    } catch (methodE) {
      return Promise.reject(methodE);
    }
    if (method === undefined) {
      return F.apply(null, argsF);
    }
    try {
      return Promise.resolve(Call(method, O, args));
    } catch (e) {
      return Promise.reject(e);
    }
  };
  exports.TransferArrayBuffer = function (O) {
    return O.slice();
  };
  exports.ValidateAndNormalizeHighWaterMark = function (highWaterMark) {
    highWaterMark = Number(highWaterMark);
    if (Number.isNaN(highWaterMark) || highWaterMark < 0) {
      throw new RangeError('highWaterMark property of a queuing strategy must be non-negative and non-NaN');
    }
    return highWaterMark;
  };
  exports.ValidateAndNormalizeQueuingStrategy = function (size, highWaterMark) {
    if (size !== undefined && typeof size !== 'function') {
      throw new TypeError('size property of a queuing strategy must be a function');
    }
    highWaterMark = exports.ValidateAndNormalizeHighWaterMark(highWaterMark);
    return {
      size: size,
      highWaterMark: highWaterMark
    };
  };
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  function rethrowAssertionErrorRejection(e) {
    if (e && e.constructor === AssertionError) {
      setTimeout(function () {
        throw e;
      }, 0);
    }
  }
  function AssertionError(message) {
    this.name = 'AssertionError';
    this.message = message || '';
    this.stack = new Error().stack;
  }
  AssertionError.prototype = Object.create(Error.prototype);
  AssertionError.prototype.constructor = AssertionError;
  function assert(value, message) {
    if (!value) {
      throw new AssertionError(message);
    }
  }
  module.exports = {
    rethrowAssertionErrorRejection: rethrowAssertionErrorRejection,
    AssertionError: AssertionError,
    assert: assert
  };
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var _createClass = function () {
    function defineProperties(target, props) {
      for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
        Object.defineProperty(target, descriptor.key, descriptor);
      }
    }
    return function (Constructor, protoProps, staticProps) {
      if (protoProps) defineProperties(Constructor.prototype, protoProps);
      if (staticProps) defineProperties(Constructor, staticProps);
      return Constructor;
    };
  }();
  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }
  var _require = __w_pdfjs_require__(0),
      InvokeOrNoop = _require.InvokeOrNoop,
      PromiseInvokeOrNoop = _require.PromiseInvokeOrNoop,
      ValidateAndNormalizeQueuingStrategy = _require.ValidateAndNormalizeQueuingStrategy,
      typeIsObject = _require.typeIsObject;
  var _require2 = __w_pdfjs_require__(1),
      assert = _require2.assert,
      rethrowAssertionErrorRejection = _require2.rethrowAssertionErrorRejection;
  var _require3 = __w_pdfjs_require__(3),
      DequeueValue = _require3.DequeueValue,
      EnqueueValueWithSize = _require3.EnqueueValueWithSize,
      PeekQueueValue = _require3.PeekQueueValue,
      ResetQueue = _require3.ResetQueue;
  var WritableStream = function () {
    function WritableStream() {
      var underlyingSink = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
      var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
          size = _ref.size,
          _ref$highWaterMark = _ref.highWaterMark,
          highWaterMark = _ref$highWaterMark === undefined ? 1 : _ref$highWaterMark;
      _classCallCheck(this, WritableStream);
      this._state = 'writable';
      this._storedError = undefined;
      this._writer = undefined;
      this._writableStreamController = undefined;
      this._writeRequests = [];
      this._inFlightWriteRequest = undefined;
      this._closeRequest = undefined;
      this._inFlightCloseRequest = undefined;
      this._pendingAbortRequest = undefined;
      this._backpressure = false;
      var type = underlyingSink.type;
      if (type !== undefined) {
        throw new RangeError('Invalid type is specified');
      }
      this._writableStreamController = new WritableStreamDefaultController(this, underlyingSink, size, highWaterMark);
      this._writableStreamController.__startSteps();
    }
    _createClass(WritableStream, [{
      key: 'abort',
      value: function abort(reason) {
        if (IsWritableStream(this) === false) {
          return Promise.reject(streamBrandCheckException('abort'));
        }
        if (IsWritableStreamLocked(this) === true) {
          return Promise.reject(new TypeError('Cannot abort a stream that already has a writer'));
        }
        return WritableStreamAbort(this, reason);
      }
    }, {
      key: 'getWriter',
      value: function getWriter() {
        if (IsWritableStream(this) === false) {
          throw streamBrandCheckException('getWriter');
        }
        return AcquireWritableStreamDefaultWriter(this);
      }
    }, {
      key: 'locked',
      get: function get() {
        if (IsWritableStream(this) === false) {
          throw streamBrandCheckException('locked');
        }
        return IsWritableStreamLocked(this);
      }
    }]);
    return WritableStream;
  }();
  module.exports = {
    AcquireWritableStreamDefaultWriter: AcquireWritableStreamDefaultWriter,
    IsWritableStream: IsWritableStream,
    IsWritableStreamLocked: IsWritableStreamLocked,
    WritableStream: WritableStream,
    WritableStreamAbort: WritableStreamAbort,
    WritableStreamDefaultControllerError: WritableStreamDefaultControllerError,
    WritableStreamDefaultWriterCloseWithErrorPropagation: WritableStreamDefaultWriterCloseWithErrorPropagation,
    WritableStreamDefaultWriterRelease: WritableStreamDefaultWriterRelease,
    WritableStreamDefaultWriterWrite: WritableStreamDefaultWriterWrite,
    WritableStreamCloseQueuedOrInFlight: WritableStreamCloseQueuedOrInFlight
  };
  function AcquireWritableStreamDefaultWriter(stream) {
    return new WritableStreamDefaultWriter(stream);
  }
  function IsWritableStream(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_writableStreamController')) {
      return false;
    }
    return true;
  }
  function IsWritableStreamLocked(stream) {
    assert(IsWritableStream(stream) === true, 'IsWritableStreamLocked should only be used on known writable streams');
    if (stream._writer === undefined) {
      return false;
    }
    return true;
  }
  function WritableStreamAbort(stream, reason) {
    var state = stream._state;
    if (state === 'closed') {
      return Promise.resolve(undefined);
    }
    if (state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    var error = new TypeError('Requested to abort');
    if (stream._pendingAbortRequest !== undefined) {
      return Promise.reject(error);
    }
    assert(state === 'writable' || state === 'erroring', 'state must be writable or erroring');
    var wasAlreadyErroring = false;
    if (state === 'erroring') {
      wasAlreadyErroring = true;
      reason = undefined;
    }
    var promise = new Promise(function (resolve, reject) {
      stream._pendingAbortRequest = {
        _resolve: resolve,
        _reject: reject,
        _reason: reason,
        _wasAlreadyErroring: wasAlreadyErroring
      };
    });
    if (wasAlreadyErroring === false) {
      WritableStreamStartErroring(stream, error);
    }
    return promise;
  }
  function WritableStreamAddWriteRequest(stream) {
    assert(IsWritableStreamLocked(stream) === true);
    assert(stream._state === 'writable');
    var promise = new Promise(function (resolve, reject) {
      var writeRequest = {
        _resolve: resolve,
        _reject: reject
      };
      stream._writeRequests.push(writeRequest);
    });
    return promise;
  }
  function WritableStreamDealWithRejection(stream, error) {
    var state = stream._state;
    if (state === 'writable') {
      WritableStreamStartErroring(stream, error);
      return;
    }
    assert(state === 'erroring');
    WritableStreamFinishErroring(stream);
  }
  function WritableStreamStartErroring(stream, reason) {
    assert(stream._storedError === undefined, 'stream._storedError === undefined');
    assert(stream._state === 'writable', 'state must be writable');
    var controller = stream._writableStreamController;
    assert(controller !== undefined, 'controller must not be undefined');
    stream._state = 'erroring';
    stream._storedError = reason;
    var writer = stream._writer;
    if (writer !== undefined) {
      WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, reason);
    }
    if (WritableStreamHasOperationMarkedInFlight(stream) === false && controller._started === true) {
      WritableStreamFinishErroring(stream);
    }
  }
  function WritableStreamFinishErroring(stream) {
    assert(stream._state === 'erroring', 'stream._state === erroring');
    assert(WritableStreamHasOperationMarkedInFlight(stream) === false, 'WritableStreamHasOperationMarkedInFlight(stream) === false');
    stream._state = 'errored';
    stream._writableStreamController.__errorSteps();
    var storedError = stream._storedError;
    for (var i = 0; i < stream._writeRequests.length; i++) {
      var writeRequest = stream._writeRequests[i];
      writeRequest._reject(storedError);
    }
    stream._writeRequests = [];
    if (stream._pendingAbortRequest === undefined) {
      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);
      return;
    }
    var abortRequest = stream._pendingAbortRequest;
    stream._pendingAbortRequest = undefined;
    if (abortRequest._wasAlreadyErroring === true) {
      abortRequest._reject(storedError);
      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);
      return;
    }
    var promise = stream._writableStreamController.__abortSteps(abortRequest._reason);
    promise.then(function () {
      abortRequest._resolve();
      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);
    }, function (reason) {
      abortRequest._reject(reason);
      WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream);
    });
  }
  function WritableStreamFinishInFlightWrite(stream) {
    assert(stream._inFlightWriteRequest !== undefined);
    stream._inFlightWriteRequest._resolve(undefined);
    stream._inFlightWriteRequest = undefined;
  }
  function WritableStreamFinishInFlightWriteWithError(stream, error) {
    assert(stream._inFlightWriteRequest !== undefined);
    stream._inFlightWriteRequest._reject(error);
    stream._inFlightWriteRequest = undefined;
    assert(stream._state === 'writable' || stream._state === 'erroring');
    WritableStreamDealWithRejection(stream, error);
  }
  function WritableStreamFinishInFlightClose(stream) {
    assert(stream._inFlightCloseRequest !== undefined);
    stream._inFlightCloseRequest._resolve(undefined);
    stream._inFlightCloseRequest = undefined;
    var state = stream._state;
    assert(state === 'writable' || state === 'erroring');
    if (state === 'erroring') {
      stream._storedError = undefined;
      if (stream._pendingAbortRequest !== undefined) {
        stream._pendingAbortRequest._resolve();
        stream._pendingAbortRequest = undefined;
      }
    }
    stream._state = 'closed';
    var writer = stream._writer;
    if (writer !== undefined) {
      defaultWriterClosedPromiseResolve(writer);
    }
    assert(stream._pendingAbortRequest === undefined, 'stream._pendingAbortRequest === undefined');
    assert(stream._storedError === undefined, 'stream._storedError === undefined');
  }
  function WritableStreamFinishInFlightCloseWithError(stream, error) {
    assert(stream._inFlightCloseRequest !== undefined);
    stream._inFlightCloseRequest._reject(error);
    stream._inFlightCloseRequest = undefined;
    assert(stream._state === 'writable' || stream._state === 'erroring');
    if (stream._pendingAbortRequest !== undefined) {
      stream._pendingAbortRequest._reject(error);
      stream._pendingAbortRequest = undefined;
    }
    WritableStreamDealWithRejection(stream, error);
  }
  function WritableStreamCloseQueuedOrInFlight(stream) {
    if (stream._closeRequest === undefined && stream._inFlightCloseRequest === undefined) {
      return false;
    }
    return true;
  }
  function WritableStreamHasOperationMarkedInFlight(stream) {
    if (stream._inFlightWriteRequest === undefined && stream._inFlightCloseRequest === undefined) {
      return false;
    }
    return true;
  }
  function WritableStreamMarkCloseRequestInFlight(stream) {
    assert(stream._inFlightCloseRequest === undefined);
    assert(stream._closeRequest !== undefined);
    stream._inFlightCloseRequest = stream._closeRequest;
    stream._closeRequest = undefined;
  }
  function WritableStreamMarkFirstWriteRequestInFlight(stream) {
    assert(stream._inFlightWriteRequest === undefined, 'there must be no pending write request');
    assert(stream._writeRequests.length !== 0, 'writeRequests must not be empty');
    stream._inFlightWriteRequest = stream._writeRequests.shift();
  }
  function WritableStreamRejectCloseAndClosedPromiseIfNeeded(stream) {
    assert(stream._state === 'errored', '_stream_.[[state]] is `"errored"`');
    if (stream._closeRequest !== undefined) {
      assert(stream._inFlightCloseRequest === undefined);
      stream._closeRequest._reject(stream._storedError);
      stream._closeRequest = undefined;
    }
    var writer = stream._writer;
    if (writer !== undefined) {
      defaultWriterClosedPromiseReject(writer, stream._storedError);
      writer._closedPromise.catch(function () {});
    }
  }
  function WritableStreamUpdateBackpressure(stream, backpressure) {
    assert(stream._state === 'writable');
    assert(WritableStreamCloseQueuedOrInFlight(stream) === false);
    var writer = stream._writer;
    if (writer !== undefined && backpressure !== stream._backpressure) {
      if (backpressure === true) {
        defaultWriterReadyPromiseReset(writer);
      } else {
        assert(backpressure === false);
        defaultWriterReadyPromiseResolve(writer);
      }
    }
    stream._backpressure = backpressure;
  }
  var WritableStreamDefaultWriter = function () {
    function WritableStreamDefaultWriter(stream) {
      _classCallCheck(this, WritableStreamDefaultWriter);
      if (IsWritableStream(stream) === false) {
        throw new TypeError('WritableStreamDefaultWriter can only be constructed with a WritableStream instance');
      }
      if (IsWritableStreamLocked(stream) === true) {
        throw new TypeError('This stream has already been locked for exclusive writing by another writer');
      }
      this._ownerWritableStream = stream;
      stream._writer = this;
      var state = stream._state;
      if (state === 'writable') {
        if (WritableStreamCloseQueuedOrInFlight(stream) === false && stream._backpressure === true) {
          defaultWriterReadyPromiseInitialize(this);
        } else {
          defaultWriterReadyPromiseInitializeAsResolved(this);
        }
        defaultWriterClosedPromiseInitialize(this);
      } else if (state === 'erroring') {
        defaultWriterReadyPromiseInitializeAsRejected(this, stream._storedError);
        this._readyPromise.catch(function () {});
        defaultWriterClosedPromiseInitialize(this);
      } else if (state === 'closed') {
        defaultWriterReadyPromiseInitializeAsResolved(this);
        defaultWriterClosedPromiseInitializeAsResolved(this);
      } else {
        assert(state === 'errored', 'state must be errored');
        var storedError = stream._storedError;
        defaultWriterReadyPromiseInitializeAsRejected(this, storedError);
        this._readyPromise.catch(function () {});
        defaultWriterClosedPromiseInitializeAsRejected(this, storedError);
        this._closedPromise.catch(function () {});
      }
    }
    _createClass(WritableStreamDefaultWriter, [{
      key: 'abort',
      value: function abort(reason) {
        if (IsWritableStreamDefaultWriter(this) === false) {
          return Promise.reject(defaultWriterBrandCheckException('abort'));
        }
        if (this._ownerWritableStream === undefined) {
          return Promise.reject(defaultWriterLockException('abort'));
        }
        return WritableStreamDefaultWriterAbort(this, reason);
      }
    }, {
      key: 'close',
      value: function close() {
        if (IsWritableStreamDefaultWriter(this) === false) {
          return Promise.reject(defaultWriterBrandCheckException('close'));
        }
        var stream = this._ownerWritableStream;
        if (stream === undefined) {
          return Promise.reject(defaultWriterLockException('close'));
        }
        if (WritableStreamCloseQueuedOrInFlight(stream) === true) {
          return Promise.reject(new TypeError('cannot close an already-closing stream'));
        }
        return WritableStreamDefaultWriterClose(this);
      }
    }, {
      key: 'releaseLock',
      value: function releaseLock() {
        if (IsWritableStreamDefaultWriter(this) === false) {
          throw defaultWriterBrandCheckException('releaseLock');
        }
        var stream = this._ownerWritableStream;
        if (stream === undefined) {
          return;
        }
        assert(stream._writer !== undefined);
        WritableStreamDefaultWriterRelease(this);
      }
    }, {
      key: 'write',
      value: function write(chunk) {
        if (IsWritableStreamDefaultWriter(this) === false) {
          return Promise.reject(defaultWriterBrandCheckException('write'));
        }
        if (this._ownerWritableStream === undefined) {
          return Promise.reject(defaultWriterLockException('write to'));
        }
        return WritableStreamDefaultWriterWrite(this, chunk);
      }
    }, {
      key: 'closed',
      get: function get() {
        if (IsWritableStreamDefaultWriter(this) === false) {
          return Promise.reject(defaultWriterBrandCheckException('closed'));
        }
        return this._closedPromise;
      }
    }, {
      key: 'desiredSize',
      get: function get() {
        if (IsWritableStreamDefaultWriter(this) === false) {
          throw defaultWriterBrandCheckException('desiredSize');
        }
        if (this._ownerWritableStream === undefined) {
          throw defaultWriterLockException('desiredSize');
        }
        return WritableStreamDefaultWriterGetDesiredSize(this);
      }
    }, {
      key: 'ready',
      get: function get() {
        if (IsWritableStreamDefaultWriter(this) === false) {
          return Promise.reject(defaultWriterBrandCheckException('ready'));
        }
        return this._readyPromise;
      }
    }]);
    return WritableStreamDefaultWriter;
  }();
  function IsWritableStreamDefaultWriter(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_ownerWritableStream')) {
      return false;
    }
    return true;
  }
  function WritableStreamDefaultWriterAbort(writer, reason) {
    var stream = writer._ownerWritableStream;
    assert(stream !== undefined);
    return WritableStreamAbort(stream, reason);
  }
  function WritableStreamDefaultWriterClose(writer) {
    var stream = writer._ownerWritableStream;
    assert(stream !== undefined);
    var state = stream._state;
    if (state === 'closed' || state === 'errored') {
      return Promise.reject(new TypeError('The stream (in ' + state + ' state) is not in the writable state and cannot be closed'));
    }
    assert(state === 'writable' || state === 'erroring');
    assert(WritableStreamCloseQueuedOrInFlight(stream) === false);
    var promise = new Promise(function (resolve, reject) {
      var closeRequest = {
        _resolve: resolve,
        _reject: reject
      };
      stream._closeRequest = closeRequest;
    });
    if (stream._backpressure === true && state === 'writable') {
      defaultWriterReadyPromiseResolve(writer);
    }
    WritableStreamDefaultControllerClose(stream._writableStreamController);
    return promise;
  }
  function WritableStreamDefaultWriterCloseWithErrorPropagation(writer) {
    var stream = writer._ownerWritableStream;
    assert(stream !== undefined);
    var state = stream._state;
    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {
      return Promise.resolve();
    }
    if (state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    assert(state === 'writable' || state === 'erroring');
    return WritableStreamDefaultWriterClose(writer);
  }
  function WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, error) {
    if (writer._closedPromiseState === 'pending') {
      defaultWriterClosedPromiseReject(writer, error);
    } else {
      defaultWriterClosedPromiseResetToRejected(writer, error);
    }
    writer._closedPromise.catch(function () {});
  }
  function WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, error) {
    if (writer._readyPromiseState === 'pending') {
      defaultWriterReadyPromiseReject(writer, error);
    } else {
      defaultWriterReadyPromiseResetToRejected(writer, error);
    }
    writer._readyPromise.catch(function () {});
  }
  function WritableStreamDefaultWriterGetDesiredSize(writer) {
    var stream = writer._ownerWritableStream;
    var state = stream._state;
    if (state === 'errored' || state === 'erroring') {
      return null;
    }
    if (state === 'closed') {
      return 0;
    }
    return WritableStreamDefaultControllerGetDesiredSize(stream._writableStreamController);
  }
  function WritableStreamDefaultWriterRelease(writer) {
    var stream = writer._ownerWritableStream;
    assert(stream !== undefined);
    assert(stream._writer === writer);
    var releasedError = new TypeError('Writer was released and can no longer be used to monitor the stream\'s closedness');
    WritableStreamDefaultWriterEnsureReadyPromiseRejected(writer, releasedError);
    WritableStreamDefaultWriterEnsureClosedPromiseRejected(writer, releasedError);
    stream._writer = undefined;
    writer._ownerWritableStream = undefined;
  }
  function WritableStreamDefaultWriterWrite(writer, chunk) {
    var stream = writer._ownerWritableStream;
    assert(stream !== undefined);
    var controller = stream._writableStreamController;
    var chunkSize = WritableStreamDefaultControllerGetChunkSize(controller, chunk);
    if (stream !== writer._ownerWritableStream) {
      return Promise.reject(defaultWriterLockException('write to'));
    }
    var state = stream._state;
    if (state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    if (WritableStreamCloseQueuedOrInFlight(stream) === true || state === 'closed') {
      return Promise.reject(new TypeError('The stream is closing or closed and cannot be written to'));
    }
    if (state === 'erroring') {
      return Promise.reject(stream._storedError);
    }
    assert(state === 'writable');
    var promise = WritableStreamAddWriteRequest(stream);
    WritableStreamDefaultControllerWrite(controller, chunk, chunkSize);
    return promise;
  }
  var WritableStreamDefaultController = function () {
    function WritableStreamDefaultController(stream, underlyingSink, size, highWaterMark) {
      _classCallCheck(this, WritableStreamDefaultController);
      if (IsWritableStream(stream) === false) {
        throw new TypeError('WritableStreamDefaultController can only be constructed with a WritableStream instance');
      }
      if (stream._writableStreamController !== undefined) {
        throw new TypeError('WritableStreamDefaultController instances can only be created by the WritableStream constructor');
      }
      this._controlledWritableStream = stream;
      this._underlyingSink = underlyingSink;
      this._queue = undefined;
      this._queueTotalSize = undefined;
      ResetQueue(this);
      this._started = false;
      var normalizedStrategy = ValidateAndNormalizeQueuingStrategy(size, highWaterMark);
      this._strategySize = normalizedStrategy.size;
      this._strategyHWM = normalizedStrategy.highWaterMark;
      var backpressure = WritableStreamDefaultControllerGetBackpressure(this);
      WritableStreamUpdateBackpressure(stream, backpressure);
    }
    _createClass(WritableStreamDefaultController, [{
      key: 'error',
      value: function error(e) {
        if (IsWritableStreamDefaultController(this) === false) {
          throw new TypeError('WritableStreamDefaultController.prototype.error can only be used on a WritableStreamDefaultController');
        }
        var state = this._controlledWritableStream._state;
        if (state !== 'writable') {
          return;
        }
        WritableStreamDefaultControllerError(this, e);
      }
    }, {
      key: '__abortSteps',
      value: function __abortSteps(reason) {
        return PromiseInvokeOrNoop(this._underlyingSink, 'abort', [reason]);
      }
    }, {
      key: '__errorSteps',
      value: function __errorSteps() {
        ResetQueue(this);
      }
    }, {
      key: '__startSteps',
      value: function __startSteps() {
        var _this = this;
        var startResult = InvokeOrNoop(this._underlyingSink, 'start', [this]);
        var stream = this._controlledWritableStream;
        Promise.resolve(startResult).then(function () {
          assert(stream._state === 'writable' || stream._state === 'erroring');
          _this._started = true;
          WritableStreamDefaultControllerAdvanceQueueIfNeeded(_this);
        }, function (r) {
          assert(stream._state === 'writable' || stream._state === 'erroring');
          _this._started = true;
          WritableStreamDealWithRejection(stream, r);
        }).catch(rethrowAssertionErrorRejection);
      }
    }]);
    return WritableStreamDefaultController;
  }();
  function WritableStreamDefaultControllerClose(controller) {
    EnqueueValueWithSize(controller, 'close', 0);
    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);
  }
  function WritableStreamDefaultControllerGetChunkSize(controller, chunk) {
    var strategySize = controller._strategySize;
    if (strategySize === undefined) {
      return 1;
    }
    try {
      return strategySize(chunk);
    } catch (chunkSizeE) {
      WritableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);
      return 1;
    }
  }
  function WritableStreamDefaultControllerGetDesiredSize(controller) {
    return controller._strategyHWM - controller._queueTotalSize;
  }
  function WritableStreamDefaultControllerWrite(controller, chunk, chunkSize) {
    var writeRecord = { chunk: chunk };
    try {
      EnqueueValueWithSize(controller, writeRecord, chunkSize);
    } catch (enqueueE) {
      WritableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);
      return;
    }
    var stream = controller._controlledWritableStream;
    if (WritableStreamCloseQueuedOrInFlight(stream) === false && stream._state === 'writable') {
      var backpressure = WritableStreamDefaultControllerGetBackpressure(controller);
      WritableStreamUpdateBackpressure(stream, backpressure);
    }
    WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);
  }
  function IsWritableStreamDefaultController(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_underlyingSink')) {
      return false;
    }
    return true;
  }
  function WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller) {
    var stream = controller._controlledWritableStream;
    if (controller._started === false) {
      return;
    }
    if (stream._inFlightWriteRequest !== undefined) {
      return;
    }
    var state = stream._state;
    if (state === 'closed' || state === 'errored') {
      return;
    }
    if (state === 'erroring') {
      WritableStreamFinishErroring(stream);
      return;
    }
    if (controller._queue.length === 0) {
      return;
    }
    var writeRecord = PeekQueueValue(controller);
    if (writeRecord === 'close') {
      WritableStreamDefaultControllerProcessClose(controller);
    } else {
      WritableStreamDefaultControllerProcessWrite(controller, writeRecord.chunk);
    }
  }
  function WritableStreamDefaultControllerErrorIfNeeded(controller, error) {
    if (controller._controlledWritableStream._state === 'writable') {
      WritableStreamDefaultControllerError(controller, error);
    }
  }
  function WritableStreamDefaultControllerProcessClose(controller) {
    var stream = controller._controlledWritableStream;
    WritableStreamMarkCloseRequestInFlight(stream);
    DequeueValue(controller);
    assert(controller._queue.length === 0, 'queue must be empty once the final write record is dequeued');
    var sinkClosePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'close', []);
    sinkClosePromise.then(function () {
      WritableStreamFinishInFlightClose(stream);
    }, function (reason) {
      WritableStreamFinishInFlightCloseWithError(stream, reason);
    }).catch(rethrowAssertionErrorRejection);
  }
  function WritableStreamDefaultControllerProcessWrite(controller, chunk) {
    var stream = controller._controlledWritableStream;
    WritableStreamMarkFirstWriteRequestInFlight(stream);
    var sinkWritePromise = PromiseInvokeOrNoop(controller._underlyingSink, 'write', [chunk, controller]);
    sinkWritePromise.then(function () {
      WritableStreamFinishInFlightWrite(stream);
      var state = stream._state;
      assert(state === 'writable' || state === 'erroring');
      DequeueValue(controller);
      if (WritableStreamCloseQueuedOrInFlight(stream) === false && state === 'writable') {
        var backpressure = WritableStreamDefaultControllerGetBackpressure(controller);
        WritableStreamUpdateBackpressure(stream, backpressure);
      }
      WritableStreamDefaultControllerAdvanceQueueIfNeeded(controller);
    }, function (reason) {
      WritableStreamFinishInFlightWriteWithError(stream, reason);
    }).catch(rethrowAssertionErrorRejection);
  }
  function WritableStreamDefaultControllerGetBackpressure(controller) {
    var desiredSize = WritableStreamDefaultControllerGetDesiredSize(controller);
    return desiredSize <= 0;
  }
  function WritableStreamDefaultControllerError(controller, error) {
    var stream = controller._controlledWritableStream;
    assert(stream._state === 'writable');
    WritableStreamStartErroring(stream, error);
  }
  function streamBrandCheckException(name) {
    return new TypeError('WritableStream.prototype.' + name + ' can only be used on a WritableStream');
  }
  function defaultWriterBrandCheckException(name) {
    return new TypeError('WritableStreamDefaultWriter.prototype.' + name + ' can only be used on a WritableStreamDefaultWriter');
  }
  function defaultWriterLockException(name) {
    return new TypeError('Cannot ' + name + ' a stream using a released writer');
  }
  function defaultWriterClosedPromiseInitialize(writer) {
    writer._closedPromise = new Promise(function (resolve, reject) {
      writer._closedPromise_resolve = resolve;
      writer._closedPromise_reject = reject;
      writer._closedPromiseState = 'pending';
    });
  }
  function defaultWriterClosedPromiseInitializeAsRejected(writer, reason) {
    writer._closedPromise = Promise.reject(reason);
    writer._closedPromise_resolve = undefined;
    writer._closedPromise_reject = undefined;
    writer._closedPromiseState = 'rejected';
  }
  function defaultWriterClosedPromiseInitializeAsResolved(writer) {
    writer._closedPromise = Promise.resolve(undefined);
    writer._closedPromise_resolve = undefined;
    writer._closedPromise_reject = undefined;
    writer._closedPromiseState = 'resolved';
  }
  function defaultWriterClosedPromiseReject(writer, reason) {
    assert(writer._closedPromise_resolve !== undefined, 'writer._closedPromise_resolve !== undefined');
    assert(writer._closedPromise_reject !== undefined, 'writer._closedPromise_reject !== undefined');
    assert(writer._closedPromiseState === 'pending', 'writer._closedPromiseState is pending');
    writer._closedPromise_reject(reason);
    writer._closedPromise_resolve = undefined;
    writer._closedPromise_reject = undefined;
    writer._closedPromiseState = 'rejected';
  }
  function defaultWriterClosedPromiseResetToRejected(writer, reason) {
    assert(writer._closedPromise_resolve === undefined, 'writer._closedPromise_resolve === undefined');
    assert(writer._closedPromise_reject === undefined, 'writer._closedPromise_reject === undefined');
    assert(writer._closedPromiseState !== 'pending', 'writer._closedPromiseState is not pending');
    writer._closedPromise = Promise.reject(reason);
    writer._closedPromiseState = 'rejected';
  }
  function defaultWriterClosedPromiseResolve(writer) {
    assert(writer._closedPromise_resolve !== undefined, 'writer._closedPromise_resolve !== undefined');
    assert(writer._closedPromise_reject !== undefined, 'writer._closedPromise_reject !== undefined');
    assert(writer._closedPromiseState === 'pending', 'writer._closedPromiseState is pending');
    writer._closedPromise_resolve(undefined);
    writer._closedPromise_resolve = undefined;
    writer._closedPromise_reject = undefined;
    writer._closedPromiseState = 'resolved';
  }
  function defaultWriterReadyPromiseInitialize(writer) {
    writer._readyPromise = new Promise(function (resolve, reject) {
      writer._readyPromise_resolve = resolve;
      writer._readyPromise_reject = reject;
    });
    writer._readyPromiseState = 'pending';
  }
  function defaultWriterReadyPromiseInitializeAsRejected(writer, reason) {
    writer._readyPromise = Promise.reject(reason);
    writer._readyPromise_resolve = undefined;
    writer._readyPromise_reject = undefined;
    writer._readyPromiseState = 'rejected';
  }
  function defaultWriterReadyPromiseInitializeAsResolved(writer) {
    writer._readyPromise = Promise.resolve(undefined);
    writer._readyPromise_resolve = undefined;
    writer._readyPromise_reject = undefined;
    writer._readyPromiseState = 'fulfilled';
  }
  function defaultWriterReadyPromiseReject(writer, reason) {
    assert(writer._readyPromise_resolve !== undefined, 'writer._readyPromise_resolve !== undefined');
    assert(writer._readyPromise_reject !== undefined, 'writer._readyPromise_reject !== undefined');
    writer._readyPromise_reject(reason);
    writer._readyPromise_resolve = undefined;
    writer._readyPromise_reject = undefined;
    writer._readyPromiseState = 'rejected';
  }
  function defaultWriterReadyPromiseReset(writer) {
    assert(writer._readyPromise_resolve === undefined, 'writer._readyPromise_resolve === undefined');
    assert(writer._readyPromise_reject === undefined, 'writer._readyPromise_reject === undefined');
    writer._readyPromise = new Promise(function (resolve, reject) {
      writer._readyPromise_resolve = resolve;
      writer._readyPromise_reject = reject;
    });
    writer._readyPromiseState = 'pending';
  }
  function defaultWriterReadyPromiseResetToRejected(writer, reason) {
    assert(writer._readyPromise_resolve === undefined, 'writer._readyPromise_resolve === undefined');
    assert(writer._readyPromise_reject === undefined, 'writer._readyPromise_reject === undefined');
    writer._readyPromise = Promise.reject(reason);
    writer._readyPromiseState = 'rejected';
  }
  function defaultWriterReadyPromiseResolve(writer) {
    assert(writer._readyPromise_resolve !== undefined, 'writer._readyPromise_resolve !== undefined');
    assert(writer._readyPromise_reject !== undefined, 'writer._readyPromise_reject !== undefined');
    writer._readyPromise_resolve(undefined);
    writer._readyPromise_resolve = undefined;
    writer._readyPromise_reject = undefined;
    writer._readyPromiseState = 'fulfilled';
  }
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var _require = __w_pdfjs_require__(0),
      IsFiniteNonNegativeNumber = _require.IsFiniteNonNegativeNumber;
  var _require2 = __w_pdfjs_require__(1),
      assert = _require2.assert;
  exports.DequeueValue = function (container) {
    assert('_queue' in container && '_queueTotalSize' in container, 'Spec-level failure: DequeueValue should only be used on containers with [[queue]] and [[queueTotalSize]].');
    assert(container._queue.length > 0, 'Spec-level failure: should never dequeue from an empty queue.');
    var pair = container._queue.shift();
    container._queueTotalSize -= pair.size;
    if (container._queueTotalSize < 0) {
      container._queueTotalSize = 0;
    }
    return pair.value;
  };
  exports.EnqueueValueWithSize = function (container, value, size) {
    assert('_queue' in container && '_queueTotalSize' in container, 'Spec-level failure: EnqueueValueWithSize should only be used on containers with [[queue]] and ' + '[[queueTotalSize]].');
    size = Number(size);
    if (!IsFiniteNonNegativeNumber(size)) {
      throw new RangeError('Size must be a finite, non-NaN, non-negative number.');
    }
    container._queue.push({
      value: value,
      size: size
    });
    container._queueTotalSize += size;
  };
  exports.PeekQueueValue = function (container) {
    assert('_queue' in container && '_queueTotalSize' in container, 'Spec-level failure: PeekQueueValue should only be used on containers with [[queue]] and [[queueTotalSize]].');
    assert(container._queue.length > 0, 'Spec-level failure: should never peek at an empty queue.');
    var pair = container._queue[0];
    return pair.value;
  };
  exports.ResetQueue = function (container) {
    assert('_queue' in container && '_queueTotalSize' in container, 'Spec-level failure: ResetQueue should only be used on containers with [[queue]] and [[queueTotalSize]].');
    container._queue = [];
    container._queueTotalSize = 0;
  };
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var _createClass = function () {
    function defineProperties(target, props) {
      for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
        Object.defineProperty(target, descriptor.key, descriptor);
      }
    }
    return function (Constructor, protoProps, staticProps) {
      if (protoProps) defineProperties(Constructor.prototype, protoProps);
      if (staticProps) defineProperties(Constructor, staticProps);
      return Constructor;
    };
  }();
  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }
  var _require = __w_pdfjs_require__(0),
      ArrayBufferCopy = _require.ArrayBufferCopy,
      CreateIterResultObject = _require.CreateIterResultObject,
      IsFiniteNonNegativeNumber = _require.IsFiniteNonNegativeNumber,
      InvokeOrNoop = _require.InvokeOrNoop,
      PromiseInvokeOrNoop = _require.PromiseInvokeOrNoop,
      TransferArrayBuffer = _require.TransferArrayBuffer,
      ValidateAndNormalizeQueuingStrategy = _require.ValidateAndNormalizeQueuingStrategy,
      ValidateAndNormalizeHighWaterMark = _require.ValidateAndNormalizeHighWaterMark;
  var _require2 = __w_pdfjs_require__(0),
      createArrayFromList = _require2.createArrayFromList,
      createDataProperty = _require2.createDataProperty,
      typeIsObject = _require2.typeIsObject;
  var _require3 = __w_pdfjs_require__(1),
      assert = _require3.assert,
      rethrowAssertionErrorRejection = _require3.rethrowAssertionErrorRejection;
  var _require4 = __w_pdfjs_require__(3),
      DequeueValue = _require4.DequeueValue,
      EnqueueValueWithSize = _require4.EnqueueValueWithSize,
      ResetQueue = _require4.ResetQueue;
  var _require5 = __w_pdfjs_require__(2),
      AcquireWritableStreamDefaultWriter = _require5.AcquireWritableStreamDefaultWriter,
      IsWritableStream = _require5.IsWritableStream,
      IsWritableStreamLocked = _require5.IsWritableStreamLocked,
      WritableStreamAbort = _require5.WritableStreamAbort,
      WritableStreamDefaultWriterCloseWithErrorPropagation = _require5.WritableStreamDefaultWriterCloseWithErrorPropagation,
      WritableStreamDefaultWriterRelease = _require5.WritableStreamDefaultWriterRelease,
      WritableStreamDefaultWriterWrite = _require5.WritableStreamDefaultWriterWrite,
      WritableStreamCloseQueuedOrInFlight = _require5.WritableStreamCloseQueuedOrInFlight;
  var ReadableStream = function () {
    function ReadableStream() {
      var underlyingSource = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
      var _ref = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
          size = _ref.size,
          highWaterMark = _ref.highWaterMark;
      _classCallCheck(this, ReadableStream);
      this._state = 'readable';
      this._reader = undefined;
      this._storedError = undefined;
      this._disturbed = false;
      this._readableStreamController = undefined;
      var type = underlyingSource.type;
      var typeString = String(type);
      if (typeString === 'bytes') {
        if (highWaterMark === undefined) {
          highWaterMark = 0;
        }
        this._readableStreamController = new ReadableByteStreamController(this, underlyingSource, highWaterMark);
      } else if (type === undefined) {
        if (highWaterMark === undefined) {
          highWaterMark = 1;
        }
        this._readableStreamController = new ReadableStreamDefaultController(this, underlyingSource, size, highWaterMark);
      } else {
        throw new RangeError('Invalid type is specified');
      }
    }
    _createClass(ReadableStream, [{
      key: 'cancel',
      value: function cancel(reason) {
        if (IsReadableStream(this) === false) {
          return Promise.reject(streamBrandCheckException('cancel'));
        }
        if (IsReadableStreamLocked(this) === true) {
          return Promise.reject(new TypeError('Cannot cancel a stream that already has a reader'));
        }
        return ReadableStreamCancel(this, reason);
      }
    }, {
      key: 'getReader',
      value: function getReader() {
        var _ref2 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
            mode = _ref2.mode;
        if (IsReadableStream(this) === false) {
          throw streamBrandCheckException('getReader');
        }
        if (mode === undefined) {
          return AcquireReadableStreamDefaultReader(this);
        }
        mode = String(mode);
        if (mode === 'byob') {
          return AcquireReadableStreamBYOBReader(this);
        }
        throw new RangeError('Invalid mode is specified');
      }
    }, {
      key: 'pipeThrough',
      value: function pipeThrough(_ref3, options) {
        var writable = _ref3.writable,
            readable = _ref3.readable;
        var promise = this.pipeTo(writable, options);
        ifIsObjectAndHasAPromiseIsHandledInternalSlotSetPromiseIsHandledToTrue(promise);
        return readable;
      }
    }, {
      key: 'pipeTo',
      value: function pipeTo(dest) {
        var _this = this;
        var _ref4 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
            preventClose = _ref4.preventClose,
            preventAbort = _ref4.preventAbort,
            preventCancel = _ref4.preventCancel;
        if (IsReadableStream(this) === false) {
          return Promise.reject(streamBrandCheckException('pipeTo'));
        }
        if (IsWritableStream(dest) === false) {
          return Promise.reject(new TypeError('ReadableStream.prototype.pipeTo\'s first argument must be a WritableStream'));
        }
        preventClose = Boolean(preventClose);
        preventAbort = Boolean(preventAbort);
        preventCancel = Boolean(preventCancel);
        if (IsReadableStreamLocked(this) === true) {
          return Promise.reject(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked ReadableStream'));
        }
        if (IsWritableStreamLocked(dest) === true) {
          return Promise.reject(new TypeError('ReadableStream.prototype.pipeTo cannot be used on a locked WritableStream'));
        }
        var reader = AcquireReadableStreamDefaultReader(this);
        var writer = AcquireWritableStreamDefaultWriter(dest);
        var shuttingDown = false;
        var currentWrite = Promise.resolve();
        return new Promise(function (resolve, reject) {
          function pipeLoop() {
            currentWrite = Promise.resolve();
            if (shuttingDown === true) {
              return Promise.resolve();
            }
            return writer._readyPromise.then(function () {
              return ReadableStreamDefaultReaderRead(reader).then(function (_ref5) {
                var value = _ref5.value,
                    done = _ref5.done;
                if (done === true) {
                  return;
                }
                currentWrite = WritableStreamDefaultWriterWrite(writer, value).catch(function () {});
              });
            }).then(pipeLoop);
          }
          isOrBecomesErrored(_this, reader._closedPromise, function (storedError) {
            if (preventAbort === false) {
              shutdownWithAction(function () {
                return WritableStreamAbort(dest, storedError);
              }, true, storedError);
            } else {
              shutdown(true, storedError);
            }
          });
          isOrBecomesErrored(dest, writer._closedPromise, function (storedError) {
            if (preventCancel === false) {
              shutdownWithAction(function () {
                return ReadableStreamCancel(_this, storedError);
              }, true, storedError);
            } else {
              shutdown(true, storedError);
            }
          });
          isOrBecomesClosed(_this, reader._closedPromise, function () {
            if (preventClose === false) {
              shutdownWithAction(function () {
                return WritableStreamDefaultWriterCloseWithErrorPropagation(writer);
              });
            } else {
              shutdown();
            }
          });
          if (WritableStreamCloseQueuedOrInFlight(dest) === true || dest._state === 'closed') {
            var destClosed = new TypeError('the destination writable stream closed before all data could be piped to it');
            if (preventCancel === false) {
              shutdownWithAction(function () {
                return ReadableStreamCancel(_this, destClosed);
              }, true, destClosed);
            } else {
              shutdown(true, destClosed);
            }
          }
          pipeLoop().catch(function (err) {
            currentWrite = Promise.resolve();
            rethrowAssertionErrorRejection(err);
          });
          function waitForWritesToFinish() {
            var oldCurrentWrite = currentWrite;
            return currentWrite.then(function () {
              return oldCurrentWrite !== currentWrite ? waitForWritesToFinish() : undefined;
            });
          }
          function isOrBecomesErrored(stream, promise, action) {
            if (stream._state === 'errored') {
              action(stream._storedError);
            } else {
              promise.catch(action).catch(rethrowAssertionErrorRejection);
            }
          }
          function isOrBecomesClosed(stream, promise, action) {
            if (stream._state === 'closed') {
              action();
            } else {
              promise.then(action).catch(rethrowAssertionErrorRejection);
            }
          }
          function shutdownWithAction(action, originalIsError, originalError) {
            if (shuttingDown === true) {
              return;
            }
            shuttingDown = true;
            if (dest._state === 'writable' && WritableStreamCloseQueuedOrInFlight(dest) === false) {
              waitForWritesToFinish().then(doTheRest);
            } else {
              doTheRest();
            }
            function doTheRest() {
              action().then(function () {
                return finalize(originalIsError, originalError);
              }, function (newError) {
                return finalize(true, newError);
              }).catch(rethrowAssertionErrorRejection);
            }
          }
          function shutdown(isError, error) {
            if (shuttingDown === true) {
              return;
            }
            shuttingDown = true;
            if (dest._state === 'writable' && WritableStreamCloseQueuedOrInFlight(dest) === false) {
              waitForWritesToFinish().then(function () {
                return finalize(isError, error);
              }).catch(rethrowAssertionErrorRejection);
            } else {
              finalize(isError, error);
            }
          }
          function finalize(isError, error) {
            WritableStreamDefaultWriterRelease(writer);
            ReadableStreamReaderGenericRelease(reader);
            if (isError) {
              reject(error);
            } else {
              resolve(undefined);
            }
          }
        });
      }
    }, {
      key: 'tee',
      value: function tee() {
        if (IsReadableStream(this) === false) {
          throw streamBrandCheckException('tee');
        }
        var branches = ReadableStreamTee(this, false);
        return createArrayFromList(branches);
      }
    }, {
      key: 'locked',
      get: function get() {
        if (IsReadableStream(this) === false) {
          throw streamBrandCheckException('locked');
        }
        return IsReadableStreamLocked(this);
      }
    }]);
    return ReadableStream;
  }();
  module.exports = {
    ReadableStream: ReadableStream,
    IsReadableStreamDisturbed: IsReadableStreamDisturbed,
    ReadableStreamDefaultControllerClose: ReadableStreamDefaultControllerClose,
    ReadableStreamDefaultControllerEnqueue: ReadableStreamDefaultControllerEnqueue,
    ReadableStreamDefaultControllerError: ReadableStreamDefaultControllerError,
    ReadableStreamDefaultControllerGetDesiredSize: ReadableStreamDefaultControllerGetDesiredSize
  };
  function AcquireReadableStreamBYOBReader(stream) {
    return new ReadableStreamBYOBReader(stream);
  }
  function AcquireReadableStreamDefaultReader(stream) {
    return new ReadableStreamDefaultReader(stream);
  }
  function IsReadableStream(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_readableStreamController')) {
      return false;
    }
    return true;
  }
  function IsReadableStreamDisturbed(stream) {
    assert(IsReadableStream(stream) === true, 'IsReadableStreamDisturbed should only be used on known readable streams');
    return stream._disturbed;
  }
  function IsReadableStreamLocked(stream) {
    assert(IsReadableStream(stream) === true, 'IsReadableStreamLocked should only be used on known readable streams');
    if (stream._reader === undefined) {
      return false;
    }
    return true;
  }
  function ReadableStreamTee(stream, cloneForBranch2) {
    assert(IsReadableStream(stream) === true);
    assert(typeof cloneForBranch2 === 'boolean');
    var reader = AcquireReadableStreamDefaultReader(stream);
    var teeState = {
      closedOrErrored: false,
      canceled1: false,
      canceled2: false,
      reason1: undefined,
      reason2: undefined
    };
    teeState.promise = new Promise(function (resolve) {
      teeState._resolve = resolve;
    });
    var pull = create_ReadableStreamTeePullFunction();
    pull._reader = reader;
    pull._teeState = teeState;
    pull._cloneForBranch2 = cloneForBranch2;
    var cancel1 = create_ReadableStreamTeeBranch1CancelFunction();
    cancel1._stream = stream;
    cancel1._teeState = teeState;
    var cancel2 = create_ReadableStreamTeeBranch2CancelFunction();
    cancel2._stream = stream;
    cancel2._teeState = teeState;
    var underlyingSource1 = Object.create(Object.prototype);
    createDataProperty(underlyingSource1, 'pull', pull);
    createDataProperty(underlyingSource1, 'cancel', cancel1);
    var branch1Stream = new ReadableStream(underlyingSource1);
    var underlyingSource2 = Object.create(Object.prototype);
    createDataProperty(underlyingSource2, 'pull', pull);
    createDataProperty(underlyingSource2, 'cancel', cancel2);
    var branch2Stream = new ReadableStream(underlyingSource2);
    pull._branch1 = branch1Stream._readableStreamController;
    pull._branch2 = branch2Stream._readableStreamController;
    reader._closedPromise.catch(function (r) {
      if (teeState.closedOrErrored === true) {
        return;
      }
      ReadableStreamDefaultControllerError(pull._branch1, r);
      ReadableStreamDefaultControllerError(pull._branch2, r);
      teeState.closedOrErrored = true;
    });
    return [branch1Stream, branch2Stream];
  }
  function create_ReadableStreamTeePullFunction() {
    function f() {
      var reader = f._reader,
          branch1 = f._branch1,
          branch2 = f._branch2,
          teeState = f._teeState;
      return ReadableStreamDefaultReaderRead(reader).then(function (result) {
        assert(typeIsObject(result));
        var value = result.value;
        var done = result.done;
        assert(typeof done === 'boolean');
        if (done === true && teeState.closedOrErrored === false) {
          if (teeState.canceled1 === false) {
            ReadableStreamDefaultControllerClose(branch1);
          }
          if (teeState.canceled2 === false) {
            ReadableStreamDefaultControllerClose(branch2);
          }
          teeState.closedOrErrored = true;
        }
        if (teeState.closedOrErrored === true) {
          return;
        }
        var value1 = value;
        var value2 = value;
        if (teeState.canceled1 === false) {
          ReadableStreamDefaultControllerEnqueue(branch1, value1);
        }
        if (teeState.canceled2 === false) {
          ReadableStreamDefaultControllerEnqueue(branch2, value2);
        }
      });
    }
    return f;
  }
  function create_ReadableStreamTeeBranch1CancelFunction() {
    function f(reason) {
      var stream = f._stream,
          teeState = f._teeState;
      teeState.canceled1 = true;
      teeState.reason1 = reason;
      if (teeState.canceled2 === true) {
        var compositeReason = createArrayFromList([teeState.reason1, teeState.reason2]);
        var cancelResult = ReadableStreamCancel(stream, compositeReason);
        teeState._resolve(cancelResult);
      }
      return teeState.promise;
    }
    return f;
  }
  function create_ReadableStreamTeeBranch2CancelFunction() {
    function f(reason) {
      var stream = f._stream,
          teeState = f._teeState;
      teeState.canceled2 = true;
      teeState.reason2 = reason;
      if (teeState.canceled1 === true) {
        var compositeReason = createArrayFromList([teeState.reason1, teeState.reason2]);
        var cancelResult = ReadableStreamCancel(stream, compositeReason);
        teeState._resolve(cancelResult);
      }
      return teeState.promise;
    }
    return f;
  }
  function ReadableStreamAddReadIntoRequest(stream) {
    assert(IsReadableStreamBYOBReader(stream._reader) === true);
    assert(stream._state === 'readable' || stream._state === 'closed');
    var promise = new Promise(function (resolve, reject) {
      var readIntoRequest = {
        _resolve: resolve,
        _reject: reject
      };
      stream._reader._readIntoRequests.push(readIntoRequest);
    });
    return promise;
  }
  function ReadableStreamAddReadRequest(stream) {
    assert(IsReadableStreamDefaultReader(stream._reader) === true);
    assert(stream._state === 'readable');
    var promise = new Promise(function (resolve, reject) {
      var readRequest = {
        _resolve: resolve,
        _reject: reject
      };
      stream._reader._readRequests.push(readRequest);
    });
    return promise;
  }
  function ReadableStreamCancel(stream, reason) {
    stream._disturbed = true;
    if (stream._state === 'closed') {
      return Promise.resolve(undefined);
    }
    if (stream._state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    ReadableStreamClose(stream);
    var sourceCancelPromise = stream._readableStreamController.__cancelSteps(reason);
    return sourceCancelPromise.then(function () {
      return undefined;
    });
  }
  function ReadableStreamClose(stream) {
    assert(stream._state === 'readable');
    stream._state = 'closed';
    var reader = stream._reader;
    if (reader === undefined) {
      return undefined;
    }
    if (IsReadableStreamDefaultReader(reader) === true) {
      for (var i = 0; i < reader._readRequests.length; i++) {
        var _resolve = reader._readRequests[i]._resolve;
        _resolve(CreateIterResultObject(undefined, true));
      }
      reader._readRequests = [];
    }
    defaultReaderClosedPromiseResolve(reader);
    return undefined;
  }
  function ReadableStreamError(stream, e) {
    assert(IsReadableStream(stream) === true, 'stream must be ReadableStream');
    assert(stream._state === 'readable', 'state must be readable');
    stream._state = 'errored';
    stream._storedError = e;
    var reader = stream._reader;
    if (reader === undefined) {
      return undefined;
    }
    if (IsReadableStreamDefaultReader(reader) === true) {
      for (var i = 0; i < reader._readRequests.length; i++) {
        var readRequest = reader._readRequests[i];
        readRequest._reject(e);
      }
      reader._readRequests = [];
    } else {
      assert(IsReadableStreamBYOBReader(reader), 'reader must be ReadableStreamBYOBReader');
      for (var _i = 0; _i < reader._readIntoRequests.length; _i++) {
        var readIntoRequest = reader._readIntoRequests[_i];
        readIntoRequest._reject(e);
      }
      reader._readIntoRequests = [];
    }
    defaultReaderClosedPromiseReject(reader, e);
    reader._closedPromise.catch(function () {});
  }
  function ReadableStreamFulfillReadIntoRequest(stream, chunk, done) {
    var reader = stream._reader;
    assert(reader._readIntoRequests.length > 0);
    var readIntoRequest = reader._readIntoRequests.shift();
    readIntoRequest._resolve(CreateIterResultObject(chunk, done));
  }
  function ReadableStreamFulfillReadRequest(stream, chunk, done) {
    var reader = stream._reader;
    assert(reader._readRequests.length > 0);
    var readRequest = reader._readRequests.shift();
    readRequest._resolve(CreateIterResultObject(chunk, done));
  }
  function ReadableStreamGetNumReadIntoRequests(stream) {
    return stream._reader._readIntoRequests.length;
  }
  function ReadableStreamGetNumReadRequests(stream) {
    return stream._reader._readRequests.length;
  }
  function ReadableStreamHasBYOBReader(stream) {
    var reader = stream._reader;
    if (reader === undefined) {
      return false;
    }
    if (IsReadableStreamBYOBReader(reader) === false) {
      return false;
    }
    return true;
  }
  function ReadableStreamHasDefaultReader(stream) {
    var reader = stream._reader;
    if (reader === undefined) {
      return false;
    }
    if (IsReadableStreamDefaultReader(reader) === false) {
      return false;
    }
    return true;
  }
  var ReadableStreamDefaultReader = function () {
    function ReadableStreamDefaultReader(stream) {
      _classCallCheck(this, ReadableStreamDefaultReader);
      if (IsReadableStream(stream) === false) {
        throw new TypeError('ReadableStreamDefaultReader can only be constructed with a ReadableStream instance');
      }
      if (IsReadableStreamLocked(stream) === true) {
        throw new TypeError('This stream has already been locked for exclusive reading by another reader');
      }
      ReadableStreamReaderGenericInitialize(this, stream);
      this._readRequests = [];
    }
    _createClass(ReadableStreamDefaultReader, [{
      key: 'cancel',
      value: function cancel(reason) {
        if (IsReadableStreamDefaultReader(this) === false) {
          return Promise.reject(defaultReaderBrandCheckException('cancel'));
        }
        if (this._ownerReadableStream === undefined) {
          return Promise.reject(readerLockException('cancel'));
        }
        return ReadableStreamReaderGenericCancel(this, reason);
      }
    }, {
      key: 'read',
      value: function read() {
        if (IsReadableStreamDefaultReader(this) === false) {
          return Promise.reject(defaultReaderBrandCheckException('read'));
        }
        if (this._ownerReadableStream === undefined) {
          return Promise.reject(readerLockException('read from'));
        }
        return ReadableStreamDefaultReaderRead(this);
      }
    }, {
      key: 'releaseLock',
      value: function releaseLock() {
        if (IsReadableStreamDefaultReader(this) === false) {
          throw defaultReaderBrandCheckException('releaseLock');
        }
        if (this._ownerReadableStream === undefined) {
          return;
        }
        if (this._readRequests.length > 0) {
          throw new TypeError('Tried to release a reader lock when that reader has pending read() calls un-settled');
        }
        ReadableStreamReaderGenericRelease(this);
      }
    }, {
      key: 'closed',
      get: function get() {
        if (IsReadableStreamDefaultReader(this) === false) {
          return Promise.reject(defaultReaderBrandCheckException('closed'));
        }
        return this._closedPromise;
      }
    }]);
    return ReadableStreamDefaultReader;
  }();
  var ReadableStreamBYOBReader = function () {
    function ReadableStreamBYOBReader(stream) {
      _classCallCheck(this, ReadableStreamBYOBReader);
      if (!IsReadableStream(stream)) {
        throw new TypeError('ReadableStreamBYOBReader can only be constructed with a ReadableStream instance given a ' + 'byte source');
      }
      if (IsReadableByteStreamController(stream._readableStreamController) === false) {
        throw new TypeError('Cannot construct a ReadableStreamBYOBReader for a stream not constructed with a byte ' + 'source');
      }
      if (IsReadableStreamLocked(stream)) {
        throw new TypeError('This stream has already been locked for exclusive reading by another reader');
      }
      ReadableStreamReaderGenericInitialize(this, stream);
      this._readIntoRequests = [];
    }
    _createClass(ReadableStreamBYOBReader, [{
      key: 'cancel',
      value: function cancel(reason) {
        if (!IsReadableStreamBYOBReader(this)) {
          return Promise.reject(byobReaderBrandCheckException('cancel'));
        }
        if (this._ownerReadableStream === undefined) {
          return Promise.reject(readerLockException('cancel'));
        }
        return ReadableStreamReaderGenericCancel(this, reason);
      }
    }, {
      key: 'read',
      value: function read(view) {
        if (!IsReadableStreamBYOBReader(this)) {
          return Promise.reject(byobReaderBrandCheckException('read'));
        }
        if (this._ownerReadableStream === undefined) {
          return Promise.reject(readerLockException('read from'));
        }
        if (!ArrayBuffer.isView(view)) {
          return Promise.reject(new TypeError('view must be an array buffer view'));
        }
        if (view.byteLength === 0) {
          return Promise.reject(new TypeError('view must have non-zero byteLength'));
        }
        return ReadableStreamBYOBReaderRead(this, view);
      }
    }, {
      key: 'releaseLock',
      value: function releaseLock() {
        if (!IsReadableStreamBYOBReader(this)) {
          throw byobReaderBrandCheckException('releaseLock');
        }
        if (this._ownerReadableStream === undefined) {
          return;
        }
        if (this._readIntoRequests.length > 0) {
          throw new TypeError('Tried to release a reader lock when that reader has pending read() calls un-settled');
        }
        ReadableStreamReaderGenericRelease(this);
      }
    }, {
      key: 'closed',
      get: function get() {
        if (!IsReadableStreamBYOBReader(this)) {
          return Promise.reject(byobReaderBrandCheckException('closed'));
        }
        return this._closedPromise;
      }
    }]);
    return ReadableStreamBYOBReader;
  }();
  function IsReadableStreamBYOBReader(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_readIntoRequests')) {
      return false;
    }
    return true;
  }
  function IsReadableStreamDefaultReader(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_readRequests')) {
      return false;
    }
    return true;
  }
  function ReadableStreamReaderGenericInitialize(reader, stream) {
    reader._ownerReadableStream = stream;
    stream._reader = reader;
    if (stream._state === 'readable') {
      defaultReaderClosedPromiseInitialize(reader);
    } else if (stream._state === 'closed') {
      defaultReaderClosedPromiseInitializeAsResolved(reader);
    } else {
      assert(stream._state === 'errored', 'state must be errored');
      defaultReaderClosedPromiseInitializeAsRejected(reader, stream._storedError);
      reader._closedPromise.catch(function () {});
    }
  }
  function ReadableStreamReaderGenericCancel(reader, reason) {
    var stream = reader._ownerReadableStream;
    assert(stream !== undefined);
    return ReadableStreamCancel(stream, reason);
  }
  function ReadableStreamReaderGenericRelease(reader) {
    assert(reader._ownerReadableStream !== undefined);
    assert(reader._ownerReadableStream._reader === reader);
    if (reader._ownerReadableStream._state === 'readable') {
      defaultReaderClosedPromiseReject(reader, new TypeError('Reader was released and can no longer be used to monitor the stream\'s closedness'));
    } else {
      defaultReaderClosedPromiseResetToRejected(reader, new TypeError('Reader was released and can no longer be used to monitor the stream\'s closedness'));
    }
    reader._closedPromise.catch(function () {});
    reader._ownerReadableStream._reader = undefined;
    reader._ownerReadableStream = undefined;
  }
  function ReadableStreamBYOBReaderRead(reader, view) {
    var stream = reader._ownerReadableStream;
    assert(stream !== undefined);
    stream._disturbed = true;
    if (stream._state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    return ReadableByteStreamControllerPullInto(stream._readableStreamController, view);
  }
  function ReadableStreamDefaultReaderRead(reader) {
    var stream = reader._ownerReadableStream;
    assert(stream !== undefined);
    stream._disturbed = true;
    if (stream._state === 'closed') {
      return Promise.resolve(CreateIterResultObject(undefined, true));
    }
    if (stream._state === 'errored') {
      return Promise.reject(stream._storedError);
    }
    assert(stream._state === 'readable');
    return stream._readableStreamController.__pullSteps();
  }
  var ReadableStreamDefaultController = function () {
    function ReadableStreamDefaultController(stream, underlyingSource, size, highWaterMark) {
      _classCallCheck(this, ReadableStreamDefaultController);
      if (IsReadableStream(stream) === false) {
        throw new TypeError('ReadableStreamDefaultController can only be constructed with a ReadableStream instance');
      }
      if (stream._readableStreamController !== undefined) {
        throw new TypeError('ReadableStreamDefaultController instances can only be created by the ReadableStream constructor');
      }
      this._controlledReadableStream = stream;
      this._underlyingSource = underlyingSource;
      this._queue = undefined;
      this._queueTotalSize = undefined;
      ResetQueue(this);
      this._started = false;
      this._closeRequested = false;
      this._pullAgain = false;
      this._pulling = false;
      var normalizedStrategy = ValidateAndNormalizeQueuingStrategy(size, highWaterMark);
      this._strategySize = normalizedStrategy.size;
      this._strategyHWM = normalizedStrategy.highWaterMark;
      var controller = this;
      var startResult = InvokeOrNoop(underlyingSource, 'start', [this]);
      Promise.resolve(startResult).then(function () {
        controller._started = true;
        assert(controller._pulling === false);
        assert(controller._pullAgain === false);
        ReadableStreamDefaultControllerCallPullIfNeeded(controller);
      }, function (r) {
        ReadableStreamDefaultControllerErrorIfNeeded(controller, r);
      }).catch(rethrowAssertionErrorRejection);
    }
    _createClass(ReadableStreamDefaultController, [{
      key: 'close',
      value: function close() {
        if (IsReadableStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('close');
        }
        if (this._closeRequested === true) {
          throw new TypeError('The stream has already been closed; do not close it again!');
        }
        var state = this._controlledReadableStream._state;
        if (state !== 'readable') {
          throw new TypeError('The stream (in ' + state + ' state) is not in the readable state and cannot be closed');
        }
        ReadableStreamDefaultControllerClose(this);
      }
    }, {
      key: 'enqueue',
      value: function enqueue(chunk) {
        if (IsReadableStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('enqueue');
        }
        if (this._closeRequested === true) {
          throw new TypeError('stream is closed or draining');
        }
        var state = this._controlledReadableStream._state;
        if (state !== 'readable') {
          throw new TypeError('The stream (in ' + state + ' state) is not in the readable state and cannot be enqueued to');
        }
        return ReadableStreamDefaultControllerEnqueue(this, chunk);
      }
    }, {
      key: 'error',
      value: function error(e) {
        if (IsReadableStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('error');
        }
        var stream = this._controlledReadableStream;
        if (stream._state !== 'readable') {
          throw new TypeError('The stream is ' + stream._state + ' and so cannot be errored');
        }
        ReadableStreamDefaultControllerError(this, e);
      }
    }, {
      key: '__cancelSteps',
      value: function __cancelSteps(reason) {
        ResetQueue(this);
        return PromiseInvokeOrNoop(this._underlyingSource, 'cancel', [reason]);
      }
    }, {
      key: '__pullSteps',
      value: function __pullSteps() {
        var stream = this._controlledReadableStream;
        if (this._queue.length > 0) {
          var chunk = DequeueValue(this);
          if (this._closeRequested === true && this._queue.length === 0) {
            ReadableStreamClose(stream);
          } else {
            ReadableStreamDefaultControllerCallPullIfNeeded(this);
          }
          return Promise.resolve(CreateIterResultObject(chunk, false));
        }
        var pendingPromise = ReadableStreamAddReadRequest(stream);
        ReadableStreamDefaultControllerCallPullIfNeeded(this);
        return pendingPromise;
      }
    }, {
      key: 'desiredSize',
      get: function get() {
        if (IsReadableStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('desiredSize');
        }
        return ReadableStreamDefaultControllerGetDesiredSize(this);
      }
    }]);
    return ReadableStreamDefaultController;
  }();
  function IsReadableStreamDefaultController(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_underlyingSource')) {
      return false;
    }
    return true;
  }
  function ReadableStreamDefaultControllerCallPullIfNeeded(controller) {
    var shouldPull = ReadableStreamDefaultControllerShouldCallPull(controller);
    if (shouldPull === false) {
      return undefined;
    }
    if (controller._pulling === true) {
      controller._pullAgain = true;
      return undefined;
    }
    assert(controller._pullAgain === false);
    controller._pulling = true;
    var pullPromise = PromiseInvokeOrNoop(controller._underlyingSource, 'pull', [controller]);
    pullPromise.then(function () {
      controller._pulling = false;
      if (controller._pullAgain === true) {
        controller._pullAgain = false;
        return ReadableStreamDefaultControllerCallPullIfNeeded(controller);
      }
      return undefined;
    }, function (e) {
      ReadableStreamDefaultControllerErrorIfNeeded(controller, e);
    }).catch(rethrowAssertionErrorRejection);
    return undefined;
  }
  function ReadableStreamDefaultControllerShouldCallPull(controller) {
    var stream = controller._controlledReadableStream;
    if (stream._state === 'closed' || stream._state === 'errored') {
      return false;
    }
    if (controller._closeRequested === true) {
      return false;
    }
    if (controller._started === false) {
      return false;
    }
    if (IsReadableStreamLocked(stream) === true && ReadableStreamGetNumReadRequests(stream) > 0) {
      return true;
    }
    var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);
    if (desiredSize > 0) {
      return true;
    }
    return false;
  }
  function ReadableStreamDefaultControllerClose(controller) {
    var stream = controller._controlledReadableStream;
    assert(controller._closeRequested === false);
    assert(stream._state === 'readable');
    controller._closeRequested = true;
    if (controller._queue.length === 0) {
      ReadableStreamClose(stream);
    }
  }
  function ReadableStreamDefaultControllerEnqueue(controller, chunk) {
    var stream = controller._controlledReadableStream;
    assert(controller._closeRequested === false);
    assert(stream._state === 'readable');
    if (IsReadableStreamLocked(stream) === true && ReadableStreamGetNumReadRequests(stream) > 0) {
      ReadableStreamFulfillReadRequest(stream, chunk, false);
    } else {
      var chunkSize = 1;
      if (controller._strategySize !== undefined) {
        var strategySize = controller._strategySize;
        try {
          chunkSize = strategySize(chunk);
        } catch (chunkSizeE) {
          ReadableStreamDefaultControllerErrorIfNeeded(controller, chunkSizeE);
          throw chunkSizeE;
        }
      }
      try {
        EnqueueValueWithSize(controller, chunk, chunkSize);
      } catch (enqueueE) {
        ReadableStreamDefaultControllerErrorIfNeeded(controller, enqueueE);
        throw enqueueE;
      }
    }
    ReadableStreamDefaultControllerCallPullIfNeeded(controller);
    return undefined;
  }
  function ReadableStreamDefaultControllerError(controller, e) {
    var stream = controller._controlledReadableStream;
    assert(stream._state === 'readable');
    ResetQueue(controller);
    ReadableStreamError(stream, e);
  }
  function ReadableStreamDefaultControllerErrorIfNeeded(controller, e) {
    if (controller._controlledReadableStream._state === 'readable') {
      ReadableStreamDefaultControllerError(controller, e);
    }
  }
  function ReadableStreamDefaultControllerGetDesiredSize(controller) {
    var stream = controller._controlledReadableStream;
    var state = stream._state;
    if (state === 'errored') {
      return null;
    }
    if (state === 'closed') {
      return 0;
    }
    return controller._strategyHWM - controller._queueTotalSize;
  }
  var ReadableStreamBYOBRequest = function () {
    function ReadableStreamBYOBRequest(controller, view) {
      _classCallCheck(this, ReadableStreamBYOBRequest);
      this._associatedReadableByteStreamController = controller;
      this._view = view;
    }
    _createClass(ReadableStreamBYOBRequest, [{
      key: 'respond',
      value: function respond(bytesWritten) {
        if (IsReadableStreamBYOBRequest(this) === false) {
          throw byobRequestBrandCheckException('respond');
        }
        if (this._associatedReadableByteStreamController === undefined) {
          throw new TypeError('This BYOB request has been invalidated');
        }
        ReadableByteStreamControllerRespond(this._associatedReadableByteStreamController, bytesWritten);
      }
    }, {
      key: 'respondWithNewView',
      value: function respondWithNewView(view) {
        if (IsReadableStreamBYOBRequest(this) === false) {
          throw byobRequestBrandCheckException('respond');
        }
        if (this._associatedReadableByteStreamController === undefined) {
          throw new TypeError('This BYOB request has been invalidated');
        }
        if (!ArrayBuffer.isView(view)) {
          throw new TypeError('You can only respond with array buffer views');
        }
        ReadableByteStreamControllerRespondWithNewView(this._associatedReadableByteStreamController, view);
      }
    }, {
      key: 'view',
      get: function get() {
        return this._view;
      }
    }]);
    return ReadableStreamBYOBRequest;
  }();
  var ReadableByteStreamController = function () {
    function ReadableByteStreamController(stream, underlyingByteSource, highWaterMark) {
      _classCallCheck(this, ReadableByteStreamController);
      if (IsReadableStream(stream) === false) {
        throw new TypeError('ReadableByteStreamController can only be constructed with a ReadableStream instance given ' + 'a byte source');
      }
      if (stream._readableStreamController !== undefined) {
        throw new TypeError('ReadableByteStreamController instances can only be created by the ReadableStream constructor given a byte ' + 'source');
      }
      this._controlledReadableStream = stream;
      this._underlyingByteSource = underlyingByteSource;
      this._pullAgain = false;
      this._pulling = false;
      ReadableByteStreamControllerClearPendingPullIntos(this);
      this._queue = this._queueTotalSize = undefined;
      ResetQueue(this);
      this._closeRequested = false;
      this._started = false;
      this._strategyHWM = ValidateAndNormalizeHighWaterMark(highWaterMark);
      var autoAllocateChunkSize = underlyingByteSource.autoAllocateChunkSize;
      if (autoAllocateChunkSize !== undefined) {
        if (Number.isInteger(autoAllocateChunkSize) === false || autoAllocateChunkSize <= 0) {
          throw new RangeError('autoAllocateChunkSize must be a positive integer');
        }
      }
      this._autoAllocateChunkSize = autoAllocateChunkSize;
      this._pendingPullIntos = [];
      var controller = this;
      var startResult = InvokeOrNoop(underlyingByteSource, 'start', [this]);
      Promise.resolve(startResult).then(function () {
        controller._started = true;
        assert(controller._pulling === false);
        assert(controller._pullAgain === false);
        ReadableByteStreamControllerCallPullIfNeeded(controller);
      }, function (r) {
        if (stream._state === 'readable') {
          ReadableByteStreamControllerError(controller, r);
        }
      }).catch(rethrowAssertionErrorRejection);
    }
    _createClass(ReadableByteStreamController, [{
      key: 'close',
      value: function close() {
        if (IsReadableByteStreamController(this) === false) {
          throw byteStreamControllerBrandCheckException('close');
        }
        if (this._closeRequested === true) {
          throw new TypeError('The stream has already been closed; do not close it again!');
        }
        var state = this._controlledReadableStream._state;
        if (state !== 'readable') {
          throw new TypeError('The stream (in ' + state + ' state) is not in the readable state and cannot be closed');
        }
        ReadableByteStreamControllerClose(this);
      }
    }, {
      key: 'enqueue',
      value: function enqueue(chunk) {
        if (IsReadableByteStreamController(this) === false) {
          throw byteStreamControllerBrandCheckException('enqueue');
        }
        if (this._closeRequested === true) {
          throw new TypeError('stream is closed or draining');
        }
        var state = this._controlledReadableStream._state;
        if (state !== 'readable') {
          throw new TypeError('The stream (in ' + state + ' state) is not in the readable state and cannot be enqueued to');
        }
        if (!ArrayBuffer.isView(chunk)) {
          throw new TypeError('You can only enqueue array buffer views when using a ReadableByteStreamController');
        }
        ReadableByteStreamControllerEnqueue(this, chunk);
      }
    }, {
      key: 'error',
      value: function error(e) {
        if (IsReadableByteStreamController(this) === false) {
          throw byteStreamControllerBrandCheckException('error');
        }
        var stream = this._controlledReadableStream;
        if (stream._state !== 'readable') {
          throw new TypeError('The stream is ' + stream._state + ' and so cannot be errored');
        }
        ReadableByteStreamControllerError(this, e);
      }
    }, {
      key: '__cancelSteps',
      value: function __cancelSteps(reason) {
        if (this._pendingPullIntos.length > 0) {
          var firstDescriptor = this._pendingPullIntos[0];
          firstDescriptor.bytesFilled = 0;
        }
        ResetQueue(this);
        return PromiseInvokeOrNoop(this._underlyingByteSource, 'cancel', [reason]);
      }
    }, {
      key: '__pullSteps',
      value: function __pullSteps() {
        var stream = this._controlledReadableStream;
        assert(ReadableStreamHasDefaultReader(stream) === true);
        if (this._queueTotalSize > 0) {
          assert(ReadableStreamGetNumReadRequests(stream) === 0);
          var entry = this._queue.shift();
          this._queueTotalSize -= entry.byteLength;
          ReadableByteStreamControllerHandleQueueDrain(this);
          var view = void 0;
          try {
            view = new Uint8Array(entry.buffer, entry.byteOffset, entry.byteLength);
          } catch (viewE) {
            return Promise.reject(viewE);
          }
          return Promise.resolve(CreateIterResultObject(view, false));
        }
        var autoAllocateChunkSize = this._autoAllocateChunkSize;
        if (autoAllocateChunkSize !== undefined) {
          var buffer = void 0;
          try {
            buffer = new ArrayBuffer(autoAllocateChunkSize);
          } catch (bufferE) {
            return Promise.reject(bufferE);
          }
          var pullIntoDescriptor = {
            buffer: buffer,
            byteOffset: 0,
            byteLength: autoAllocateChunkSize,
            bytesFilled: 0,
            elementSize: 1,
            ctor: Uint8Array,
            readerType: 'default'
          };
          this._pendingPullIntos.push(pullIntoDescriptor);
        }
        var promise = ReadableStreamAddReadRequest(stream);
        ReadableByteStreamControllerCallPullIfNeeded(this);
        return promise;
      }
    }, {
      key: 'byobRequest',
      get: function get() {
        if (IsReadableByteStreamController(this) === false) {
          throw byteStreamControllerBrandCheckException('byobRequest');
        }
        if (this._byobRequest === undefined && this._pendingPullIntos.length > 0) {
          var firstDescriptor = this._pendingPullIntos[0];
          var view = new Uint8Array(firstDescriptor.buffer, firstDescriptor.byteOffset + firstDescriptor.bytesFilled, firstDescriptor.byteLength - firstDescriptor.bytesFilled);
          this._byobRequest = new ReadableStreamBYOBRequest(this, view);
        }
        return this._byobRequest;
      }
    }, {
      key: 'desiredSize',
      get: function get() {
        if (IsReadableByteStreamController(this) === false) {
          throw byteStreamControllerBrandCheckException('desiredSize');
        }
        return ReadableByteStreamControllerGetDesiredSize(this);
      }
    }]);
    return ReadableByteStreamController;
  }();
  function IsReadableByteStreamController(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_underlyingByteSource')) {
      return false;
    }
    return true;
  }
  function IsReadableStreamBYOBRequest(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_associatedReadableByteStreamController')) {
      return false;
    }
    return true;
  }
  function ReadableByteStreamControllerCallPullIfNeeded(controller) {
    var shouldPull = ReadableByteStreamControllerShouldCallPull(controller);
    if (shouldPull === false) {
      return undefined;
    }
    if (controller._pulling === true) {
      controller._pullAgain = true;
      return undefined;
    }
    assert(controller._pullAgain === false);
    controller._pulling = true;
    var pullPromise = PromiseInvokeOrNoop(controller._underlyingByteSource, 'pull', [controller]);
    pullPromise.then(function () {
      controller._pulling = false;
      if (controller._pullAgain === true) {
        controller._pullAgain = false;
        ReadableByteStreamControllerCallPullIfNeeded(controller);
      }
    }, function (e) {
      if (controller._controlledReadableStream._state === 'readable') {
        ReadableByteStreamControllerError(controller, e);
      }
    }).catch(rethrowAssertionErrorRejection);
    return undefined;
  }
  function ReadableByteStreamControllerClearPendingPullIntos(controller) {
    ReadableByteStreamControllerInvalidateBYOBRequest(controller);
    controller._pendingPullIntos = [];
  }
  function ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor) {
    assert(stream._state !== 'errored', 'state must not be errored');
    var done = false;
    if (stream._state === 'closed') {
      assert(pullIntoDescriptor.bytesFilled === 0);
      done = true;
    }
    var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);
    if (pullIntoDescriptor.readerType === 'default') {
      ReadableStreamFulfillReadRequest(stream, filledView, done);
    } else {
      assert(pullIntoDescriptor.readerType === 'byob');
      ReadableStreamFulfillReadIntoRequest(stream, filledView, done);
    }
  }
  function ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor) {
    var bytesFilled = pullIntoDescriptor.bytesFilled;
    var elementSize = pullIntoDescriptor.elementSize;
    assert(bytesFilled <= pullIntoDescriptor.byteLength);
    assert(bytesFilled % elementSize === 0);
    return new pullIntoDescriptor.ctor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, bytesFilled / elementSize);
  }
  function ReadableByteStreamControllerEnqueueChunkToQueue(controller, buffer, byteOffset, byteLength) {
    controller._queue.push({
      buffer: buffer,
      byteOffset: byteOffset,
      byteLength: byteLength
    });
    controller._queueTotalSize += byteLength;
  }
  function ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) {
    var elementSize = pullIntoDescriptor.elementSize;
    var currentAlignedBytes = pullIntoDescriptor.bytesFilled - pullIntoDescriptor.bytesFilled % elementSize;
    var maxBytesToCopy = Math.min(controller._queueTotalSize, pullIntoDescriptor.byteLength - pullIntoDescriptor.bytesFilled);
    var maxBytesFilled = pullIntoDescriptor.bytesFilled + maxBytesToCopy;
    var maxAlignedBytes = maxBytesFilled - maxBytesFilled % elementSize;
    var totalBytesToCopyRemaining = maxBytesToCopy;
    var ready = false;
    if (maxAlignedBytes > currentAlignedBytes) {
      totalBytesToCopyRemaining = maxAlignedBytes - pullIntoDescriptor.bytesFilled;
      ready = true;
    }
    var queue = controller._queue;
    while (totalBytesToCopyRemaining > 0) {
      var headOfQueue = queue[0];
      var bytesToCopy = Math.min(totalBytesToCopyRemaining, headOfQueue.byteLength);
      var destStart = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;
      ArrayBufferCopy(pullIntoDescriptor.buffer, destStart, headOfQueue.buffer, headOfQueue.byteOffset, bytesToCopy);
      if (headOfQueue.byteLength === bytesToCopy) {
        queue.shift();
      } else {
        headOfQueue.byteOffset += bytesToCopy;
        headOfQueue.byteLength -= bytesToCopy;
      }
      controller._queueTotalSize -= bytesToCopy;
      ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesToCopy, pullIntoDescriptor);
      totalBytesToCopyRemaining -= bytesToCopy;
    }
    if (ready === false) {
      assert(controller._queueTotalSize === 0, 'queue must be empty');
      assert(pullIntoDescriptor.bytesFilled > 0);
      assert(pullIntoDescriptor.bytesFilled < pullIntoDescriptor.elementSize);
    }
    return ready;
  }
  function ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, size, pullIntoDescriptor) {
    assert(controller._pendingPullIntos.length === 0 || controller._pendingPullIntos[0] === pullIntoDescriptor);
    ReadableByteStreamControllerInvalidateBYOBRequest(controller);
    pullIntoDescriptor.bytesFilled += size;
  }
  function ReadableByteStreamControllerHandleQueueDrain(controller) {
    assert(controller._controlledReadableStream._state === 'readable');
    if (controller._queueTotalSize === 0 && controller._closeRequested === true) {
      ReadableStreamClose(controller._controlledReadableStream);
    } else {
      ReadableByteStreamControllerCallPullIfNeeded(controller);
    }
  }
  function ReadableByteStreamControllerInvalidateBYOBRequest(controller) {
    if (controller._byobRequest === undefined) {
      return;
    }
    controller._byobRequest._associatedReadableByteStreamController = undefined;
    controller._byobRequest._view = undefined;
    controller._byobRequest = undefined;
  }
  function ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller) {
    assert(controller._closeRequested === false);
    while (controller._pendingPullIntos.length > 0) {
      if (controller._queueTotalSize === 0) {
        return;
      }
      var pullIntoDescriptor = controller._pendingPullIntos[0];
      if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) === true) {
        ReadableByteStreamControllerShiftPendingPullInto(controller);
        ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableStream, pullIntoDescriptor);
      }
    }
  }
  function ReadableByteStreamControllerPullInto(controller, view) {
    var stream = controller._controlledReadableStream;
    var elementSize = 1;
    if (view.constructor !== DataView) {
      elementSize = view.constructor.BYTES_PER_ELEMENT;
    }
    var ctor = view.constructor;
    var pullIntoDescriptor = {
      buffer: view.buffer,
      byteOffset: view.byteOffset,
      byteLength: view.byteLength,
      bytesFilled: 0,
      elementSize: elementSize,
      ctor: ctor,
      readerType: 'byob'
    };
    if (controller._pendingPullIntos.length > 0) {
      pullIntoDescriptor.buffer = TransferArrayBuffer(pullIntoDescriptor.buffer);
      controller._pendingPullIntos.push(pullIntoDescriptor);
      return ReadableStreamAddReadIntoRequest(stream);
    }
    if (stream._state === 'closed') {
      var emptyView = new view.constructor(pullIntoDescriptor.buffer, pullIntoDescriptor.byteOffset, 0);
      return Promise.resolve(CreateIterResultObject(emptyView, true));
    }
    if (controller._queueTotalSize > 0) {
      if (ReadableByteStreamControllerFillPullIntoDescriptorFromQueue(controller, pullIntoDescriptor) === true) {
        var filledView = ReadableByteStreamControllerConvertPullIntoDescriptor(pullIntoDescriptor);
        ReadableByteStreamControllerHandleQueueDrain(controller);
        return Promise.resolve(CreateIterResultObject(filledView, false));
      }
      if (controller._closeRequested === true) {
        var e = new TypeError('Insufficient bytes to fill elements in the given buffer');
        ReadableByteStreamControllerError(controller, e);
        return Promise.reject(e);
      }
    }
    pullIntoDescriptor.buffer = TransferArrayBuffer(pullIntoDescriptor.buffer);
    controller._pendingPullIntos.push(pullIntoDescriptor);
    var promise = ReadableStreamAddReadIntoRequest(stream);
    ReadableByteStreamControllerCallPullIfNeeded(controller);
    return promise;
  }
  function ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor) {
    firstDescriptor.buffer = TransferArrayBuffer(firstDescriptor.buffer);
    assert(firstDescriptor.bytesFilled === 0, 'bytesFilled must be 0');
    var stream = controller._controlledReadableStream;
    if (ReadableStreamHasBYOBReader(stream) === true) {
      while (ReadableStreamGetNumReadIntoRequests(stream) > 0) {
        var pullIntoDescriptor = ReadableByteStreamControllerShiftPendingPullInto(controller);
        ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor);
      }
    }
  }
  function ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, pullIntoDescriptor) {
    if (pullIntoDescriptor.bytesFilled + bytesWritten > pullIntoDescriptor.byteLength) {
      throw new RangeError('bytesWritten out of range');
    }
    ReadableByteStreamControllerFillHeadPullIntoDescriptor(controller, bytesWritten, pullIntoDescriptor);
    if (pullIntoDescriptor.bytesFilled < pullIntoDescriptor.elementSize) {
      return;
    }
    ReadableByteStreamControllerShiftPendingPullInto(controller);
    var remainderSize = pullIntoDescriptor.bytesFilled % pullIntoDescriptor.elementSize;
    if (remainderSize > 0) {
      var end = pullIntoDescriptor.byteOffset + pullIntoDescriptor.bytesFilled;
      var remainder = pullIntoDescriptor.buffer.slice(end - remainderSize, end);
      ReadableByteStreamControllerEnqueueChunkToQueue(controller, remainder, 0, remainder.byteLength);
    }
    pullIntoDescriptor.buffer = TransferArrayBuffer(pullIntoDescriptor.buffer);
    pullIntoDescriptor.bytesFilled -= remainderSize;
    ReadableByteStreamControllerCommitPullIntoDescriptor(controller._controlledReadableStream, pullIntoDescriptor);
    ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);
  }
  function ReadableByteStreamControllerRespondInternal(controller, bytesWritten) {
    var firstDescriptor = controller._pendingPullIntos[0];
    var stream = controller._controlledReadableStream;
    if (stream._state === 'closed') {
      if (bytesWritten !== 0) {
        throw new TypeError('bytesWritten must be 0 when calling respond() on a closed stream');
      }
      ReadableByteStreamControllerRespondInClosedState(controller, firstDescriptor);
    } else {
      assert(stream._state === 'readable');
      ReadableByteStreamControllerRespondInReadableState(controller, bytesWritten, firstDescriptor);
    }
  }
  function ReadableByteStreamControllerShiftPendingPullInto(controller) {
    var descriptor = controller._pendingPullIntos.shift();
    ReadableByteStreamControllerInvalidateBYOBRequest(controller);
    return descriptor;
  }
  function ReadableByteStreamControllerShouldCallPull(controller) {
    var stream = controller._controlledReadableStream;
    if (stream._state !== 'readable') {
      return false;
    }
    if (controller._closeRequested === true) {
      return false;
    }
    if (controller._started === false) {
      return false;
    }
    if (ReadableStreamHasDefaultReader(stream) === true && ReadableStreamGetNumReadRequests(stream) > 0) {
      return true;
    }
    if (ReadableStreamHasBYOBReader(stream) === true && ReadableStreamGetNumReadIntoRequests(stream) > 0) {
      return true;
    }
    if (ReadableByteStreamControllerGetDesiredSize(controller) > 0) {
      return true;
    }
    return false;
  }
  function ReadableByteStreamControllerClose(controller) {
    var stream = controller._controlledReadableStream;
    assert(controller._closeRequested === false);
    assert(stream._state === 'readable');
    if (controller._queueTotalSize > 0) {
      controller._closeRequested = true;
      return;
    }
    if (controller._pendingPullIntos.length > 0) {
      var firstPendingPullInto = controller._pendingPullIntos[0];
      if (firstPendingPullInto.bytesFilled > 0) {
        var e = new TypeError('Insufficient bytes to fill elements in the given buffer');
        ReadableByteStreamControllerError(controller, e);
        throw e;
      }
    }
    ReadableStreamClose(stream);
  }
  function ReadableByteStreamControllerEnqueue(controller, chunk) {
    var stream = controller._controlledReadableStream;
    assert(controller._closeRequested === false);
    assert(stream._state === 'readable');
    var buffer = chunk.buffer;
    var byteOffset = chunk.byteOffset;
    var byteLength = chunk.byteLength;
    var transferredBuffer = TransferArrayBuffer(buffer);
    if (ReadableStreamHasDefaultReader(stream) === true) {
      if (ReadableStreamGetNumReadRequests(stream) === 0) {
        ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);
      } else {
        assert(controller._queue.length === 0);
        var transferredView = new Uint8Array(transferredBuffer, byteOffset, byteLength);
        ReadableStreamFulfillReadRequest(stream, transferredView, false);
      }
    } else if (ReadableStreamHasBYOBReader(stream) === true) {
      ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);
      ReadableByteStreamControllerProcessPullIntoDescriptorsUsingQueue(controller);
    } else {
      assert(IsReadableStreamLocked(stream) === false, 'stream must not be locked');
      ReadableByteStreamControllerEnqueueChunkToQueue(controller, transferredBuffer, byteOffset, byteLength);
    }
  }
  function ReadableByteStreamControllerError(controller, e) {
    var stream = controller._controlledReadableStream;
    assert(stream._state === 'readable');
    ReadableByteStreamControllerClearPendingPullIntos(controller);
    ResetQueue(controller);
    ReadableStreamError(stream, e);
  }
  function ReadableByteStreamControllerGetDesiredSize(controller) {
    var stream = controller._controlledReadableStream;
    var state = stream._state;
    if (state === 'errored') {
      return null;
    }
    if (state === 'closed') {
      return 0;
    }
    return controller._strategyHWM - controller._queueTotalSize;
  }
  function ReadableByteStreamControllerRespond(controller, bytesWritten) {
    bytesWritten = Number(bytesWritten);
    if (IsFiniteNonNegativeNumber(bytesWritten) === false) {
      throw new RangeError('bytesWritten must be a finite');
    }
    assert(controller._pendingPullIntos.length > 0);
    ReadableByteStreamControllerRespondInternal(controller, bytesWritten);
  }
  function ReadableByteStreamControllerRespondWithNewView(controller, view) {
    assert(controller._pendingPullIntos.length > 0);
    var firstDescriptor = controller._pendingPullIntos[0];
    if (firstDescriptor.byteOffset + firstDescriptor.bytesFilled !== view.byteOffset) {
      throw new RangeError('The region specified by view does not match byobRequest');
    }
    if (firstDescriptor.byteLength !== view.byteLength) {
      throw new RangeError('The buffer of view has different capacity than byobRequest');
    }
    firstDescriptor.buffer = view.buffer;
    ReadableByteStreamControllerRespondInternal(controller, view.byteLength);
  }
  function streamBrandCheckException(name) {
    return new TypeError('ReadableStream.prototype.' + name + ' can only be used on a ReadableStream');
  }
  function readerLockException(name) {
    return new TypeError('Cannot ' + name + ' a stream using a released reader');
  }
  function defaultReaderBrandCheckException(name) {
    return new TypeError('ReadableStreamDefaultReader.prototype.' + name + ' can only be used on a ReadableStreamDefaultReader');
  }
  function defaultReaderClosedPromiseInitialize(reader) {
    reader._closedPromise = new Promise(function (resolve, reject) {
      reader._closedPromise_resolve = resolve;
      reader._closedPromise_reject = reject;
    });
  }
  function defaultReaderClosedPromiseInitializeAsRejected(reader, reason) {
    reader._closedPromise = Promise.reject(reason);
    reader._closedPromise_resolve = undefined;
    reader._closedPromise_reject = undefined;
  }
  function defaultReaderClosedPromiseInitializeAsResolved(reader) {
    reader._closedPromise = Promise.resolve(undefined);
    reader._closedPromise_resolve = undefined;
    reader._closedPromise_reject = undefined;
  }
  function defaultReaderClosedPromiseReject(reader, reason) {
    assert(reader._closedPromise_resolve !== undefined);
    assert(reader._closedPromise_reject !== undefined);
    reader._closedPromise_reject(reason);
    reader._closedPromise_resolve = undefined;
    reader._closedPromise_reject = undefined;
  }
  function defaultReaderClosedPromiseResetToRejected(reader, reason) {
    assert(reader._closedPromise_resolve === undefined);
    assert(reader._closedPromise_reject === undefined);
    reader._closedPromise = Promise.reject(reason);
  }
  function defaultReaderClosedPromiseResolve(reader) {
    assert(reader._closedPromise_resolve !== undefined);
    assert(reader._closedPromise_reject !== undefined);
    reader._closedPromise_resolve(undefined);
    reader._closedPromise_resolve = undefined;
    reader._closedPromise_reject = undefined;
  }
  function byobReaderBrandCheckException(name) {
    return new TypeError('ReadableStreamBYOBReader.prototype.' + name + ' can only be used on a ReadableStreamBYOBReader');
  }
  function defaultControllerBrandCheckException(name) {
    return new TypeError('ReadableStreamDefaultController.prototype.' + name + ' can only be used on a ReadableStreamDefaultController');
  }
  function byobRequestBrandCheckException(name) {
    return new TypeError('ReadableStreamBYOBRequest.prototype.' + name + ' can only be used on a ReadableStreamBYOBRequest');
  }
  function byteStreamControllerBrandCheckException(name) {
    return new TypeError('ReadableByteStreamController.prototype.' + name + ' can only be used on a ReadableByteStreamController');
  }
  function ifIsObjectAndHasAPromiseIsHandledInternalSlotSetPromiseIsHandledToTrue(promise) {
    try {
      Promise.prototype.then.call(promise, undefined, function () {});
    } catch (e) {}
  }
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var transformStream = __w_pdfjs_require__(6);
  var readableStream = __w_pdfjs_require__(4);
  var writableStream = __w_pdfjs_require__(2);
  exports.TransformStream = transformStream.TransformStream;
  exports.ReadableStream = readableStream.ReadableStream;
  exports.IsReadableStreamDisturbed = readableStream.IsReadableStreamDisturbed;
  exports.ReadableStreamDefaultControllerClose = readableStream.ReadableStreamDefaultControllerClose;
  exports.ReadableStreamDefaultControllerEnqueue = readableStream.ReadableStreamDefaultControllerEnqueue;
  exports.ReadableStreamDefaultControllerError = readableStream.ReadableStreamDefaultControllerError;
  exports.ReadableStreamDefaultControllerGetDesiredSize = readableStream.ReadableStreamDefaultControllerGetDesiredSize;
  exports.AcquireWritableStreamDefaultWriter = writableStream.AcquireWritableStreamDefaultWriter;
  exports.IsWritableStream = writableStream.IsWritableStream;
  exports.IsWritableStreamLocked = writableStream.IsWritableStreamLocked;
  exports.WritableStream = writableStream.WritableStream;
  exports.WritableStreamAbort = writableStream.WritableStreamAbort;
  exports.WritableStreamDefaultControllerError = writableStream.WritableStreamDefaultControllerError;
  exports.WritableStreamDefaultWriterCloseWithErrorPropagation = writableStream.WritableStreamDefaultWriterCloseWithErrorPropagation;
  exports.WritableStreamDefaultWriterRelease = writableStream.WritableStreamDefaultWriterRelease;
  exports.WritableStreamDefaultWriterWrite = writableStream.WritableStreamDefaultWriterWrite;
}, function (module, exports, __w_pdfjs_require__) {
  "use strict";

  var _createClass = function () {
    function defineProperties(target, props) {
      for (var i = 0; i < props.length; i++) {
        var descriptor = props[i];
        descriptor.enumerable = descriptor.enumerable || false;
        descriptor.configurable = true;
        if ("value" in descriptor) descriptor.writable = true;
        Object.defineProperty(target, descriptor.key, descriptor);
      }
    }
    return function (Constructor, protoProps, staticProps) {
      if (protoProps) defineProperties(Constructor.prototype, protoProps);
      if (staticProps) defineProperties(Constructor, staticProps);
      return Constructor;
    };
  }();
  function _classCallCheck(instance, Constructor) {
    if (!(instance instanceof Constructor)) {
      throw new TypeError("Cannot call a class as a function");
    }
  }
  var _require = __w_pdfjs_require__(1),
      assert = _require.assert;
  var _require2 = __w_pdfjs_require__(0),
      InvokeOrNoop = _require2.InvokeOrNoop,
      PromiseInvokeOrPerformFallback = _require2.PromiseInvokeOrPerformFallback,
      PromiseInvokeOrNoop = _require2.PromiseInvokeOrNoop,
      typeIsObject = _require2.typeIsObject;
  var _require3 = __w_pdfjs_require__(4),
      ReadableStream = _require3.ReadableStream,
      ReadableStreamDefaultControllerClose = _require3.ReadableStreamDefaultControllerClose,
      ReadableStreamDefaultControllerEnqueue = _require3.ReadableStreamDefaultControllerEnqueue,
      ReadableStreamDefaultControllerError = _require3.ReadableStreamDefaultControllerError,
      ReadableStreamDefaultControllerGetDesiredSize = _require3.ReadableStreamDefaultControllerGetDesiredSize;
  var _require4 = __w_pdfjs_require__(2),
      WritableStream = _require4.WritableStream,
      WritableStreamDefaultControllerError = _require4.WritableStreamDefaultControllerError;
  function TransformStreamCloseReadable(transformStream) {
    if (transformStream._errored === true) {
      throw new TypeError('TransformStream is already errored');
    }
    if (transformStream._readableClosed === true) {
      throw new TypeError('Readable side is already closed');
    }
    TransformStreamCloseReadableInternal(transformStream);
  }
  function TransformStreamEnqueueToReadable(transformStream, chunk) {
    if (transformStream._errored === true) {
      throw new TypeError('TransformStream is already errored');
    }
    if (transformStream._readableClosed === true) {
      throw new TypeError('Readable side is already closed');
    }
    var controller = transformStream._readableController;
    try {
      ReadableStreamDefaultControllerEnqueue(controller, chunk);
    } catch (e) {
      transformStream._readableClosed = true;
      TransformStreamErrorIfNeeded(transformStream, e);
      throw transformStream._storedError;
    }
    var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(controller);
    var maybeBackpressure = desiredSize <= 0;
    if (maybeBackpressure === true && transformStream._backpressure === false) {
      TransformStreamSetBackpressure(transformStream, true);
    }
  }
  function TransformStreamError(transformStream, e) {
    if (transformStream._errored === true) {
      throw new TypeError('TransformStream is already errored');
    }
    TransformStreamErrorInternal(transformStream, e);
  }
  function TransformStreamCloseReadableInternal(transformStream) {
    assert(transformStream._errored === false);
    assert(transformStream._readableClosed === false);
    try {
      ReadableStreamDefaultControllerClose(transformStream._readableController);
    } catch (e) {
      assert(false);
    }
    transformStream._readableClosed = true;
  }
  function TransformStreamErrorIfNeeded(transformStream, e) {
    if (transformStream._errored === false) {
      TransformStreamErrorInternal(transformStream, e);
    }
  }
  function TransformStreamErrorInternal(transformStream, e) {
    assert(transformStream._errored === false);
    transformStream._errored = true;
    transformStream._storedError = e;
    if (transformStream._writableDone === false) {
      WritableStreamDefaultControllerError(transformStream._writableController, e);
    }
    if (transformStream._readableClosed === false) {
      ReadableStreamDefaultControllerError(transformStream._readableController, e);
    }
  }
  function TransformStreamReadableReadyPromise(transformStream) {
    assert(transformStream._backpressureChangePromise !== undefined, '_backpressureChangePromise should have been initialized');
    if (transformStream._backpressure === false) {
      return Promise.resolve();
    }
    assert(transformStream._backpressure === true, '_backpressure should have been initialized');
    return transformStream._backpressureChangePromise;
  }
  function TransformStreamSetBackpressure(transformStream, backpressure) {
    assert(transformStream._backpressure !== backpressure, 'TransformStreamSetBackpressure() should be called only when backpressure is changed');
    if (transformStream._backpressureChangePromise !== undefined) {
      transformStream._backpressureChangePromise_resolve(backpressure);
    }
    transformStream._backpressureChangePromise = new Promise(function (resolve) {
      transformStream._backpressureChangePromise_resolve = resolve;
    });
    transformStream._backpressureChangePromise.then(function (resolution) {
      assert(resolution !== backpressure, '_backpressureChangePromise should be fulfilled only when backpressure is changed');
    });
    transformStream._backpressure = backpressure;
  }
  function TransformStreamDefaultTransform(chunk, transformStreamController) {
    var transformStream = transformStreamController._controlledTransformStream;
    TransformStreamEnqueueToReadable(transformStream, chunk);
    return Promise.resolve();
  }
  function TransformStreamTransform(transformStream, chunk) {
    assert(transformStream._errored === false);
    assert(transformStream._transforming === false);
    assert(transformStream._backpressure === false);
    transformStream._transforming = true;
    var transformer = transformStream._transformer;
    var controller = transformStream._transformStreamController;
    var transformPromise = PromiseInvokeOrPerformFallback(transformer, 'transform', [chunk, controller], TransformStreamDefaultTransform, [chunk, controller]);
    return transformPromise.then(function () {
      transformStream._transforming = false;
      return TransformStreamReadableReadyPromise(transformStream);
    }, function (e) {
      TransformStreamErrorIfNeeded(transformStream, e);
      return Promise.reject(e);
    });
  }
  function IsTransformStreamDefaultController(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_controlledTransformStream')) {
      return false;
    }
    return true;
  }
  function IsTransformStream(x) {
    if (!typeIsObject(x)) {
      return false;
    }
    if (!Object.prototype.hasOwnProperty.call(x, '_transformStreamController')) {
      return false;
    }
    return true;
  }
  var TransformStreamSink = function () {
    function TransformStreamSink(transformStream, startPromise) {
      _classCallCheck(this, TransformStreamSink);
      this._transformStream = transformStream;
      this._startPromise = startPromise;
    }
    _createClass(TransformStreamSink, [{
      key: 'start',
      value: function start(c) {
        var transformStream = this._transformStream;
        transformStream._writableController = c;
        return this._startPromise.then(function () {
          return TransformStreamReadableReadyPromise(transformStream);
        });
      }
    }, {
      key: 'write',
      value: function write(chunk) {
        var transformStream = this._transformStream;
        return TransformStreamTransform(transformStream, chunk);
      }
    }, {
      key: 'abort',
      value: function abort() {
        var transformStream = this._transformStream;
        transformStream._writableDone = true;
        TransformStreamErrorInternal(transformStream, new TypeError('Writable side aborted'));
      }
    }, {
      key: 'close',
      value: function close() {
        var transformStream = this._transformStream;
        assert(transformStream._transforming === false);
        transformStream._writableDone = true;
        var flushPromise = PromiseInvokeOrNoop(transformStream._transformer, 'flush', [transformStream._transformStreamController]);
        return flushPromise.then(function () {
          if (transformStream._errored === true) {
            return Promise.reject(transformStream._storedError);
          }
          if (transformStream._readableClosed === false) {
            TransformStreamCloseReadableInternal(transformStream);
          }
          return Promise.resolve();
        }).catch(function (r) {
          TransformStreamErrorIfNeeded(transformStream, r);
          return Promise.reject(transformStream._storedError);
        });
      }
    }]);
    return TransformStreamSink;
  }();
  var TransformStreamSource = function () {
    function TransformStreamSource(transformStream, startPromise) {
      _classCallCheck(this, TransformStreamSource);
      this._transformStream = transformStream;
      this._startPromise = startPromise;
    }
    _createClass(TransformStreamSource, [{
      key: 'start',
      value: function start(c) {
        var transformStream = this._transformStream;
        transformStream._readableController = c;
        return this._startPromise.then(function () {
          assert(transformStream._backpressureChangePromise !== undefined, '_backpressureChangePromise should have been initialized');
          if (transformStream._backpressure === true) {
            return Promise.resolve();
          }
          assert(transformStream._backpressure === false, '_backpressure should have been initialized');
          return transformStream._backpressureChangePromise;
        });
      }
    }, {
      key: 'pull',
      value: function pull() {
        var transformStream = this._transformStream;
        assert(transformStream._backpressure === true, 'pull() should be never called while _backpressure is false');
        assert(transformStream._backpressureChangePromise !== undefined, '_backpressureChangePromise should have been initialized');
        TransformStreamSetBackpressure(transformStream, false);
        return transformStream._backpressureChangePromise;
      }
    }, {
      key: 'cancel',
      value: function cancel() {
        var transformStream = this._transformStream;
        transformStream._readableClosed = true;
        TransformStreamErrorInternal(transformStream, new TypeError('Readable side canceled'));
      }
    }]);
    return TransformStreamSource;
  }();
  var TransformStreamDefaultController = function () {
    function TransformStreamDefaultController(transformStream) {
      _classCallCheck(this, TransformStreamDefaultController);
      if (IsTransformStream(transformStream) === false) {
        throw new TypeError('TransformStreamDefaultController can only be ' + 'constructed with a TransformStream instance');
      }
      if (transformStream._transformStreamController !== undefined) {
        throw new TypeError('TransformStreamDefaultController instances can ' + 'only be created by the TransformStream constructor');
      }
      this._controlledTransformStream = transformStream;
    }
    _createClass(TransformStreamDefaultController, [{
      key: 'enqueue',
      value: function enqueue(chunk) {
        if (IsTransformStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('enqueue');
        }
        TransformStreamEnqueueToReadable(this._controlledTransformStream, chunk);
      }
    }, {
      key: 'close',
      value: function close() {
        if (IsTransformStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('close');
        }
        TransformStreamCloseReadable(this._controlledTransformStream);
      }
    }, {
      key: 'error',
      value: function error(reason) {
        if (IsTransformStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('error');
        }
        TransformStreamError(this._controlledTransformStream, reason);
      }
    }, {
      key: 'desiredSize',
      get: function get() {
        if (IsTransformStreamDefaultController(this) === false) {
          throw defaultControllerBrandCheckException('desiredSize');
        }
        var transformStream = this._controlledTransformStream;
        var readableController = transformStream._readableController;
        return ReadableStreamDefaultControllerGetDesiredSize(readableController);
      }
    }]);
    return TransformStreamDefaultController;
  }();
  var TransformStream = function () {
    function TransformStream() {
      var transformer = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
      _classCallCheck(this, TransformStream);
      this._transformer = transformer;
      var readableStrategy = transformer.readableStrategy,
          writableStrategy = transformer.writableStrategy;
      this._transforming = false;
      this._errored = false;
      this._storedError = undefined;
      this._writableController = undefined;
      this._readableController = undefined;
      this._transformStreamController = undefined;
      this._writableDone = false;
      this._readableClosed = false;
      this._backpressure = undefined;
      this._backpressureChangePromise = undefined;
      this._backpressureChangePromise_resolve = undefined;
      this._transformStreamController = new TransformStreamDefaultController(this);
      var startPromise_resolve = void 0;
      var startPromise = new Promise(function (resolve) {
        startPromise_resolve = resolve;
      });
      var source = new TransformStreamSource(this, startPromise);
      this._readable = new ReadableStream(source, readableStrategy);
      var sink = new TransformStreamSink(this, startPromise);
      this._writable = new WritableStream(sink, writableStrategy);
      assert(this._writableController !== undefined);
      assert(this._readableController !== undefined);
      var desiredSize = ReadableStreamDefaultControllerGetDesiredSize(this._readableController);
      TransformStreamSetBackpressure(this, desiredSize <= 0);
      var transformStream = this;
      var startResult = InvokeOrNoop(transformer, 'start', [transformStream._transformStreamController]);
      startPromise_resolve(startResult);
      startPromise.catch(function (e) {
        if (transformStream._errored === false) {
          transformStream._errored = true;
          transformStream._storedError = e;
        }
      });
    }
    _createClass(TransformStream, [{
      key: 'readable',
      get: function get() {
        if (IsTransformStream(this) === false) {
          throw streamBrandCheckException('readable');
        }
        return this._readable;
      }
    }, {
      key: 'writable',
      get: function get() {
        if (IsTransformStream(this) === false) {
          throw streamBrandCheckException('writable');
        }
        return this._writable;
      }
    }]);
    return TransformStream;
  }();
  module.exports = { TransformStream: TransformStream };
  function defaultControllerBrandCheckException(name) {
    return new TypeError('TransformStreamDefaultController.prototype.' + name + ' can only be used on a TransformStreamDefaultController');
  }
  function streamBrandCheckException(name) {
    return new TypeError('TransformStream.prototype.' + name + ' can only be used on a TransformStream');
  }
}, function (module, exports, __w_pdfjs_require__) {
  module.exports = __w_pdfjs_require__(5);
}]));

/***/ }),
/* 9 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.build = exports.version = exports.setPDFNetworkStreamFactory = exports.PDFPageProxy = exports.PDFDocumentProxy = exports.PDFWorker = exports.PDFDataRangeTransport = exports.LoopbackPort = exports.getDocument = undefined;

var _util = __w_pdfjs_require__(0);

var _dom_utils = __w_pdfjs_require__(1);

var _font_loader = __w_pdfjs_require__(10);

var _api_compatibility = __w_pdfjs_require__(3);

var _canvas = __w_pdfjs_require__(11);

var _global_scope = __w_pdfjs_require__(2);

var _global_scope2 = _interopRequireDefault(_global_scope);

var _worker_options = __w_pdfjs_require__(4);

var _metadata = __w_pdfjs_require__(13);

var _transport_stream = __w_pdfjs_require__(14);

var _webgl = __w_pdfjs_require__(15);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var DEFAULT_RANGE_CHUNK_SIZE = 65536;
let isWorkerDisabled = false;
let workerSrc;
const pdfjsFilePath = null;
var fakeWorkerFilesLoader = null;
var useRequireEnsure = false;
;
var createPDFNetworkStream;
function setPDFNetworkStreamFactory(pdfNetworkStreamFactory) {
  createPDFNetworkStream = pdfNetworkStreamFactory;
}
function getDocument(src) {
  var task = new PDFDocumentLoadingTask();
  var source;
  if (typeof src === 'string') {
    source = { url: src };
  } else if ((0, _util.isArrayBuffer)(src)) {
    source = { data: src };
  } else if (src instanceof PDFDataRangeTransport) {
    source = { range: src };
  } else {
    if (typeof src !== 'object') {
      throw new Error('Invalid parameter in getDocument, ' + 'need either Uint8Array, string or a parameter object');
    }
    if (!src.url && !src.data && !src.range) {
      throw new Error('Invalid parameter object: need either .data, .range or .url');
    }
    source = src;
  }
  let params = Object.create(null);
  var rangeTransport = null;
  let worker = null;
  let CMapReaderFactory = _dom_utils.DOMCMapReaderFactory;
  for (var key in source) {
    if (key === 'url' && typeof window !== 'undefined') {
      params[key] = new URL(source[key], window.location).href;
      continue;
    } else if (key === 'range') {
      rangeTransport = source[key];
      continue;
    } else if (key === 'worker') {
      worker = source[key];
      continue;
    } else if (key === 'data' && !(source[key] instanceof Uint8Array)) {
      var pdfBytes = source[key];
      if (typeof pdfBytes === 'string') {
        params[key] = (0, _util.stringToBytes)(pdfBytes);
      } else if (typeof pdfBytes === 'object' && pdfBytes !== null && !isNaN(pdfBytes.length)) {
        params[key] = new Uint8Array(pdfBytes);
      } else if ((0, _util.isArrayBuffer)(pdfBytes)) {
        params[key] = new Uint8Array(pdfBytes);
      } else {
        throw new Error('Invalid PDF binary data: either typed array, ' + 'string or array-like object is expected in the ' + 'data property.');
      }
      continue;
    } else if (key === 'CMapReaderFactory') {
      CMapReaderFactory = source[key];
      continue;
    }
    params[key] = source[key];
  }
  params.rangeChunkSize = params.rangeChunkSize || DEFAULT_RANGE_CHUNK_SIZE;
  params.ignoreErrors = params.stopAtErrors !== true;
  params.pdfBug = params.pdfBug === true;
  const NativeImageDecoderValues = Object.values(_util.NativeImageDecoding);
  if (params.nativeImageDecoderSupport === undefined || !NativeImageDecoderValues.includes(params.nativeImageDecoderSupport)) {
    params.nativeImageDecoderSupport = _util.NativeImageDecoding.DECODE;
  }
  if (!Number.isInteger(params.maxImageSize)) {
    params.maxImageSize = -1;
  }
  if (typeof params.isEvalSupported !== 'boolean') {
    params.isEvalSupported = true;
  }
  if (typeof params.disableFontFace !== 'boolean') {
    params.disableFontFace = false;
  }
  if (typeof params.disableRange !== 'boolean') {
    params.disableRange = _api_compatibility.apiCompatibilityParams.disableRange || false;
  }
  if (typeof params.disableStream !== 'boolean') {
    params.disableStream = _api_compatibility.apiCompatibilityParams.disableStream || false;
  }
  if (typeof params.disableAutoFetch !== 'boolean') {
    params.disableAutoFetch = false;
  }
  if (typeof params.disableCreateObjectURL !== 'boolean') {
    params.disableCreateObjectURL = _api_compatibility.apiCompatibilityParams.disableCreateObjectURL || false;
  }
  (0, _util.setVerbosityLevel)(params.verbosity);
  if (!worker) {
    const workerParams = {
      postMessageTransfers: params.postMessageTransfers,
      verbosity: params.verbosity
    };
    let workerPort = _worker_options.GlobalWorkerOptions.workerPort;
    if (workerPort) {
      workerParams.port = workerPort;
      worker = PDFWorker.fromPort(workerParams);
    } else {
      worker = new PDFWorker(workerParams);
    }
    task._worker = worker;
  }
  var docId = task.docId;
  worker.promise.then(function () {
    if (task.destroyed) {
      throw new Error('Loading aborted');
    }
    return _fetchDocument(worker, params, rangeTransport, docId).then(function (workerId) {
      if (task.destroyed) {
        throw new Error('Loading aborted');
      }
      let networkStream;
      if (rangeTransport) {
        networkStream = new _transport_stream.PDFDataTransportStream({
          length: params.length,
          initialData: params.initialData,
          disableRange: params.disableRange,
          disableStream: params.disableStream
        }, rangeTransport);
      } else if (!params.data) {
        networkStream = createPDFNetworkStream({
          url: params.url,
          length: params.length,
          httpHeaders: params.httpHeaders,
          withCredentials: params.withCredentials,
          rangeChunkSize: params.rangeChunkSize,
          disableRange: params.disableRange,
          disableStream: params.disableStream
        });
      }
      var messageHandler = new _util.MessageHandler(docId, workerId, worker.port);
      messageHandler.postMessageTransfers = worker.postMessageTransfers;
      var transport = new WorkerTransport(messageHandler, task, networkStream, params, CMapReaderFactory);
      task._transport = transport;
      messageHandler.send('Ready', null);
    });
  }).catch(task._capability.reject);
  return task;
}
function _fetchDocument(worker, source, pdfDataRangeTransport, docId) {
  if (worker.destroyed) {
    return Promise.reject(new Error('Worker was destroyed'));
  }
  if (pdfDataRangeTransport) {
    source.length = pdfDataRangeTransport.length;
    source.initialData = pdfDataRangeTransport.initialData;
  }
  return worker.messageHandler.sendWithPromise('GetDocRequest', {
    docId,
    apiVersion: '2.0.447',
    source: {
      data: source.data,
      url: source.url,
      password: source.password,
      disableAutoFetch: source.disableAutoFetch,
      rangeChunkSize: source.rangeChunkSize,
      length: source.length
    },
    maxImageSize: source.maxImageSize,
    disableFontFace: source.disableFontFace,
    disableCreateObjectURL: source.disableCreateObjectURL,
    postMessageTransfers: worker.postMessageTransfers,
    docBaseUrl: source.docBaseUrl,
    nativeImageDecoderSupport: source.nativeImageDecoderSupport,
    ignoreErrors: source.ignoreErrors,
    isEvalSupported: source.isEvalSupported
  }).then(function (workerId) {
    if (worker.destroyed) {
      throw new Error('Worker was destroyed');
    }
    return workerId;
  });
}
var PDFDocumentLoadingTask = function PDFDocumentLoadingTaskClosure() {
  var nextDocumentId = 0;
  function PDFDocumentLoadingTask() {
    this._capability = (0, _util.createPromiseCapability)();
    this._transport = null;
    this._worker = null;
    this.docId = 'd' + nextDocumentId++;
    this.destroyed = false;
    this.onPassword = null;
    this.onProgress = null;
    this.onUnsupportedFeature = null;
  }
  PDFDocumentLoadingTask.prototype = {
    get promise() {
      return this._capability.promise;
    },
    destroy() {
      this.destroyed = true;
      var transportDestroyed = !this._transport ? Promise.resolve() : this._transport.destroy();
      return transportDestroyed.then(() => {
        this._transport = null;
        if (this._worker) {
          this._worker.destroy();
          this._worker = null;
        }
      });
    },
    then: function PDFDocumentLoadingTask_then(onFulfilled, onRejected) {
      return this.promise.then.apply(this.promise, arguments);
    }
  };
  return PDFDocumentLoadingTask;
}();
var PDFDataRangeTransport = function pdfDataRangeTransportClosure() {
  function PDFDataRangeTransport(length, initialData) {
    this.length = length;
    this.initialData = initialData;
    this._rangeListeners = [];
    this._progressListeners = [];
    this._progressiveReadListeners = [];
    this._readyCapability = (0, _util.createPromiseCapability)();
  }
  PDFDataRangeTransport.prototype = {
    addRangeListener: function PDFDataRangeTransport_addRangeListener(listener) {
      this._rangeListeners.push(listener);
    },
    addProgressListener: function PDFDataRangeTransport_addProgressListener(listener) {
      this._progressListeners.push(listener);
    },
    addProgressiveReadListener: function PDFDataRangeTransport_addProgressiveReadListener(listener) {
      this._progressiveReadListeners.push(listener);
    },
    onDataRange: function PDFDataRangeTransport_onDataRange(begin, chunk) {
      var listeners = this._rangeListeners;
      for (var i = 0, n = listeners.length; i < n; ++i) {
        listeners[i](begin, chunk);
      }
    },
    onDataProgress: function PDFDataRangeTransport_onDataProgress(loaded) {
      this._readyCapability.promise.then(() => {
        var listeners = this._progressListeners;
        for (var i = 0, n = listeners.length; i < n; ++i) {
          listeners[i](loaded);
        }
      });
    },
    onDataProgressiveRead: function PDFDataRangeTransport_onDataProgress(chunk) {
      this._readyCapability.promise.then(() => {
        var listeners = this._progressiveReadListeners;
        for (var i = 0, n = listeners.length; i < n; ++i) {
          listeners[i](chunk);
        }
      });
    },
    transportReady: function PDFDataRangeTransport_transportReady() {
      this._readyCapability.resolve();
    },
    requestDataRange: function PDFDataRangeTransport_requestDataRange(begin, end) {
      (0, _util.unreachable)('Abstract method PDFDataRangeTransport.requestDataRange');
    },
    abort: function PDFDataRangeTransport_abort() {}
  };
  return PDFDataRangeTransport;
}();
var PDFDocumentProxy = function PDFDocumentProxyClosure() {
  function PDFDocumentProxy(pdfInfo, transport, loadingTask) {
    this.pdfInfo = pdfInfo;
    this.transport = transport;
    this.loadingTask = loadingTask;
  }
  PDFDocumentProxy.prototype = {
    get numPages() {
      return this.pdfInfo.numPages;
    },
    get fingerprint() {
      return this.pdfInfo.fingerprint;
    },
    getPage(pageNumber) {
      return this.transport.getPage(pageNumber);
    },
    getPageIndex: function PDFDocumentProxy_getPageIndex(ref) {
      return this.transport.getPageIndex(ref);
    },
    getDestinations: function PDFDocumentProxy_getDestinations() {
      return this.transport.getDestinations();
    },
    getDestination: function PDFDocumentProxy_getDestination(id) {
      return this.transport.getDestination(id);
    },
    getPageLabels: function PDFDocumentProxy_getPageLabels() {
      return this.transport.getPageLabels();
    },
    getPageMode() {
      return this.transport.getPageMode();
    },
    getAttachments: function PDFDocumentProxy_getAttachments() {
      return this.transport.getAttachments();
    },
    getJavaScript() {
      return this.transport.getJavaScript();
    },
    getOutline: function PDFDocumentProxy_getOutline() {
      return this.transport.getOutline();
    },
    getMetadata: function PDFDocumentProxy_getMetadata() {
      return this.transport.getMetadata();
    },
    getData: function PDFDocumentProxy_getData() {
      return this.transport.getData();
    },
    getDownloadInfo: function PDFDocumentProxy_getDownloadInfo() {
      return this.transport.downloadInfoCapability.promise;
    },
    getStats: function PDFDocumentProxy_getStats() {
      return this.transport.getStats();
    },
    cleanup: function PDFDocumentProxy_cleanup() {
      this.transport.startCleanup();
    },
    destroy: function PDFDocumentProxy_destroy() {
      return this.loadingTask.destroy();
    },
    get loadingParams() {
      return this.transport.loadingParams;
    }
  };
  return PDFDocumentProxy;
}();
var PDFPageProxy = function PDFPageProxyClosure() {
  function PDFPageProxy(pageIndex, pageInfo, transport, pdfBug = false) {
    this.pageIndex = pageIndex;
    this.pageInfo = pageInfo;
    this.transport = transport;
    this._stats = pdfBug ? new _dom_utils.StatTimer() : _dom_utils.DummyStatTimer;
    this._pdfBug = pdfBug;
    this.commonObjs = transport.commonObjs;
    this.objs = new PDFObjects();
    this.cleanupAfterRender = false;
    this.pendingCleanup = false;
    this.intentStates = Object.create(null);
    this.destroyed = false;
  }
  PDFPageProxy.prototype = {
    get pageNumber() {
      return this.pageIndex + 1;
    },
    get rotate() {
      return this.pageInfo.rotate;
    },
    get ref() {
      return this.pageInfo.ref;
    },
    get userUnit() {
      return this.pageInfo.userUnit;
    },
    get view() {
      return this.pageInfo.view;
    },
    get pageSizeInches() {
      const [x1, y1, x2, y2] = this.view,
            userUnit = this.userUnit;
      return {
        width: (x2 - x1) / 72 * userUnit,
        height: (y2 - y1) / 72 * userUnit
      };
    },
    getViewport(scale, rotate = this.rotate, dontFlip = false) {
      return new _util.PageViewport(this.view, scale, rotate, 0, 0, dontFlip);
    },
    getAnnotations: function PDFPageProxy_getAnnotations(params) {
      var intent = params && params.intent || null;
      if (!this.annotationsPromise || this.annotationsIntent !== intent) {
        this.annotationsPromise = this.transport.getAnnotations(this.pageIndex, intent);
        this.annotationsIntent = intent;
      }
      return this.annotationsPromise;
    },
    render: function PDFPageProxy_render(params) {
      let stats = this._stats;
      stats.time('Overall');
      this.pendingCleanup = false;
      var renderingIntent = params.intent === 'print' ? 'print' : 'display';
      var canvasFactory = params.canvasFactory || new _dom_utils.DOMCanvasFactory();
      let webGLContext = new _webgl.WebGLContext({ enable: params.enableWebGL });
      if (!this.intentStates[renderingIntent]) {
        this.intentStates[renderingIntent] = Object.create(null);
      }
      var intentState = this.intentStates[renderingIntent];
      if (!intentState.displayReadyCapability) {
        intentState.receivingOperatorList = true;
        intentState.displayReadyCapability = (0, _util.createPromiseCapability)();
        intentState.operatorList = {
          fnArray: [],
          argsArray: [],
          lastChunk: false
        };
        stats.time('Page Request');
        this.transport.messageHandler.send('RenderPageRequest', {
          pageIndex: this.pageNumber - 1,
          intent: renderingIntent,
          renderInteractiveForms: params.renderInteractiveForms === true
        });
      }
      var complete = error => {
        var i = intentState.renderTasks.indexOf(internalRenderTask);
        if (i >= 0) {
          intentState.renderTasks.splice(i, 1);
        }
        if (this.cleanupAfterRender) {
          this.pendingCleanup = true;
        }
        this._tryCleanup();
        if (error) {
          internalRenderTask.capability.reject(error);
        } else {
          internalRenderTask.capability.resolve();
        }
        stats.timeEnd('Rendering');
        stats.timeEnd('Overall');
      };
      var internalRenderTask = new InternalRenderTask(complete, params, this.objs, this.commonObjs, intentState.operatorList, this.pageNumber, canvasFactory, webGLContext, this._pdfBug);
      internalRenderTask.useRequestAnimationFrame = renderingIntent !== 'print';
      if (!intentState.renderTasks) {
        intentState.renderTasks = [];
      }
      intentState.renderTasks.push(internalRenderTask);
      var renderTask = internalRenderTask.task;
      intentState.displayReadyCapability.promise.then(transparency => {
        if (this.pendingCleanup) {
          complete();
          return;
        }
        stats.time('Rendering');
        internalRenderTask.initializeGraphics(transparency);
        internalRenderTask.operatorListChanged();
      }).catch(complete);
      return renderTask;
    },
    getOperatorList: function PDFPageProxy_getOperatorList() {
      function operatorListChanged() {
        if (intentState.operatorList.lastChunk) {
          intentState.opListReadCapability.resolve(intentState.operatorList);
          var i = intentState.renderTasks.indexOf(opListTask);
          if (i >= 0) {
            intentState.renderTasks.splice(i, 1);
          }
        }
      }
      var renderingIntent = 'oplist';
      if (!this.intentStates[renderingIntent]) {
        this.intentStates[renderingIntent] = Object.create(null);
      }
      var intentState = this.intentStates[renderingIntent];
      var opListTask;
      if (!intentState.opListReadCapability) {
        opListTask = {};
        opListTask.operatorListChanged = operatorListChanged;
        intentState.receivingOperatorList = true;
        intentState.opListReadCapability = (0, _util.createPromiseCapability)();
        intentState.renderTasks = [];
        intentState.renderTasks.push(opListTask);
        intentState.operatorList = {
          fnArray: [],
          argsArray: [],
          lastChunk: false
        };
        this.transport.messageHandler.send('RenderPageRequest', {
          pageIndex: this.pageIndex,
          intent: renderingIntent
        });
      }
      return intentState.opListReadCapability.promise;
    },
    streamTextContent(params = {}) {
      const TEXT_CONTENT_CHUNK_SIZE = 100;
      return this.transport.messageHandler.sendWithStream('GetTextContent', {
        pageIndex: this.pageNumber - 1,
        normalizeWhitespace: params.normalizeWhitespace === true,
        combineTextItems: params.disableCombineTextItems !== true
      }, {
        highWaterMark: TEXT_CONTENT_CHUNK_SIZE,
        size(textContent) {
          return textContent.items.length;
        }
      });
    },
    getTextContent: function PDFPageProxy_getTextContent(params) {
      params = params || {};
      let readableStream = this.streamTextContent(params);
      return new Promise(function (resolve, reject) {
        function pump() {
          reader.read().then(function ({ value, done }) {
            if (done) {
              resolve(textContent);
              return;
            }
            _util.Util.extendObj(textContent.styles, value.styles);
            _util.Util.appendToArray(textContent.items, value.items);
            pump();
          }, reject);
        }
        let reader = readableStream.getReader();
        let textContent = {
          items: [],
          styles: Object.create(null)
        };
        pump();
      });
    },
    _destroy: function PDFPageProxy_destroy() {
      this.destroyed = true;
      this.transport.pageCache[this.pageIndex] = null;
      var waitOn = [];
      Object.keys(this.intentStates).forEach(function (intent) {
        if (intent === 'oplist') {
          return;
        }
        var intentState = this.intentStates[intent];
        intentState.renderTasks.forEach(function (renderTask) {
          var renderCompleted = renderTask.capability.promise.catch(function () {});
          waitOn.push(renderCompleted);
          renderTask.cancel();
        });
      }, this);
      this.objs.clear();
      this.annotationsPromise = null;
      this.pendingCleanup = false;
      return Promise.all(waitOn);
    },
    cleanup(resetStats = false) {
      this.pendingCleanup = true;
      this._tryCleanup(resetStats);
    },
    _tryCleanup(resetStats = false) {
      if (!this.pendingCleanup || Object.keys(this.intentStates).some(function (intent) {
        var intentState = this.intentStates[intent];
        return intentState.renderTasks.length !== 0 || intentState.receivingOperatorList;
      }, this)) {
        return;
      }
      Object.keys(this.intentStates).forEach(function (intent) {
        delete this.intentStates[intent];
      }, this);
      this.objs.clear();
      this.annotationsPromise = null;
      if (resetStats && this._stats instanceof _dom_utils.StatTimer) {
        this._stats = new _dom_utils.StatTimer();
      }
      this.pendingCleanup = false;
    },
    _startRenderPage: function PDFPageProxy_startRenderPage(transparency, intent) {
      var intentState = this.intentStates[intent];
      if (intentState.displayReadyCapability) {
        intentState.displayReadyCapability.resolve(transparency);
      }
    },
    _renderPageChunk: function PDFPageProxy_renderPageChunk(operatorListChunk, intent) {
      var intentState = this.intentStates[intent];
      var i, ii;
      for (i = 0, ii = operatorListChunk.length; i < ii; i++) {
        intentState.operatorList.fnArray.push(operatorListChunk.fnArray[i]);
        intentState.operatorList.argsArray.push(operatorListChunk.argsArray[i]);
      }
      intentState.operatorList.lastChunk = operatorListChunk.lastChunk;
      for (i = 0; i < intentState.renderTasks.length; i++) {
        intentState.renderTasks[i].operatorListChanged();
      }
      if (operatorListChunk.lastChunk) {
        intentState.receivingOperatorList = false;
        this._tryCleanup();
      }
    },
    get stats() {
      return this._stats instanceof _dom_utils.StatTimer ? this._stats : null;
    }
  };
  return PDFPageProxy;
}();
class LoopbackPort {
  constructor(defer) {
    this._listeners = [];
    this._defer = defer;
    this._deferred = Promise.resolve(undefined);
  }
  postMessage(obj, transfers) {
    function cloneValue(value) {
      if (typeof value !== 'object' || value === null) {
        return value;
      }
      if (cloned.has(value)) {
        return cloned.get(value);
      }
      var result;
      var buffer;
      if ((buffer = value.buffer) && (0, _util.isArrayBuffer)(buffer)) {
        var transferable = transfers && transfers.includes(buffer);
        if (value === buffer) {
          result = value;
        } else if (transferable) {
          result = new value.constructor(buffer, value.byteOffset, value.byteLength);
        } else {
          result = new value.constructor(value);
        }
        cloned.set(value, result);
        return result;
      }
      result = Array.isArray(value) ? [] : {};
      cloned.set(value, result);
      for (var i in value) {
        var desc,
            p = value;
        while (!(desc = Object.getOwnPropertyDescriptor(p, i))) {
          p = Object.getPrototypeOf(p);
        }
        if (typeof desc.value === 'undefined' || typeof desc.value === 'function') {
          continue;
        }
        result[i] = cloneValue(desc.value);
      }
      return result;
    }
    if (!this._defer) {
      this._listeners.forEach(function (listener) {
        listener.call(this, { data: obj });
      }, this);
      return;
    }
    var cloned = new WeakMap();
    var e = { data: cloneValue(obj) };
    this._deferred.then(() => {
      this._listeners.forEach(function (listener) {
        listener.call(this, e);
      }, this);
    });
  }
  addEventListener(name, listener) {
    this._listeners.push(listener);
  }
  removeEventListener(name, listener) {
    var i = this._listeners.indexOf(listener);
    this._listeners.splice(i, 1);
  }
  terminate() {
    this._listeners = [];
  }
}
var PDFWorker = function PDFWorkerClosure() {
  let nextFakeWorkerId = 0;
  function getWorkerSrc() {
    if (_worker_options.GlobalWorkerOptions.workerSrc) {
      return _worker_options.GlobalWorkerOptions.workerSrc;
    }
    if (typeof workerSrc !== 'undefined') {
      return workerSrc;
    }
    throw new Error('No "GlobalWorkerOptions.workerSrc" specified.');
  }
  function getMainThreadWorkerMessageHandler() {
    if (typeof window === 'undefined') {
      return null;
    }
    return window.pdfjsWorker && window.pdfjsWorker.WorkerMessageHandler;
  }
  let fakeWorkerFilesLoadedCapability;
  function setupFakeWorkerGlobal() {
    if (fakeWorkerFilesLoadedCapability) {
      return fakeWorkerFilesLoadedCapability.promise;
    }
    fakeWorkerFilesLoadedCapability = (0, _util.createPromiseCapability)();
    let mainWorkerMessageHandler = getMainThreadWorkerMessageHandler();
    if (mainWorkerMessageHandler) {
      fakeWorkerFilesLoadedCapability.resolve(mainWorkerMessageHandler);
      return fakeWorkerFilesLoadedCapability.promise;
    }
    let loader = fakeWorkerFilesLoader || function (callback) {
      _util.Util.loadScript(getWorkerSrc(), function () {
        callback(window.pdfjsWorker.WorkerMessageHandler);
      });
    };
    loader(fakeWorkerFilesLoadedCapability.resolve);
    return fakeWorkerFilesLoadedCapability.promise;
  }
  function createCDNWrapper(url) {
    var wrapper = 'importScripts(\'' + url + '\');';
    return URL.createObjectURL(new Blob([wrapper]));
  }
  let pdfWorkerPorts = new WeakMap();
  function PDFWorker({ name = null, port = null, postMessageTransfers = true, verbosity = null } = {}) {
    if (port && pdfWorkerPorts.has(port)) {
      throw new Error('Cannot use more than one PDFWorker per port');
    }
    this.name = name;
    this.destroyed = false;
    this.postMessageTransfers = postMessageTransfers !== false;
    this.verbosity = (0, _util.isNum)(verbosity) ? verbosity : (0, _util.getVerbosityLevel)();
    this._readyCapability = (0, _util.createPromiseCapability)();
    this._port = null;
    this._webWorker = null;
    this._messageHandler = null;
    if (port) {
      pdfWorkerPorts.set(port, this);
      this._initializeFromPort(port);
      return;
    }
    this._initialize();
  }
  PDFWorker.prototype = {
    get promise() {
      return this._readyCapability.promise;
    },
    get port() {
      return this._port;
    },
    get messageHandler() {
      return this._messageHandler;
    },
    _initializeFromPort: function PDFWorker_initializeFromPort(port) {
      this._port = port;
      this._messageHandler = new _util.MessageHandler('main', 'worker', port);
      this._messageHandler.on('ready', function () {});
      this._readyCapability.resolve();
    },
    _initialize: function PDFWorker_initialize() {
      if (typeof Worker !== 'undefined' && !isWorkerDisabled && !getMainThreadWorkerMessageHandler()) {
        var workerSrc = getWorkerSrc();
        try {
          var worker = new Worker(workerSrc);
          var messageHandler = new _util.MessageHandler('main', 'worker', worker);
          var terminateEarly = () => {
            worker.removeEventListener('error', onWorkerError);
            messageHandler.destroy();
            worker.terminate();
            if (this.destroyed) {
              this._readyCapability.reject(new Error('Worker was destroyed'));
            } else {
              this._setupFakeWorker();
            }
          };
          var onWorkerError = () => {
            if (!this._webWorker) {
              terminateEarly();
            }
          };
          worker.addEventListener('error', onWorkerError);
          messageHandler.on('test', data => {
            worker.removeEventListener('error', onWorkerError);
            if (this.destroyed) {
              terminateEarly();
              return;
            }
            var supportTypedArray = data && data.supportTypedArray;
            if (supportTypedArray) {
              this._messageHandler = messageHandler;
              this._port = worker;
              this._webWorker = worker;
              if (!data.supportTransfers) {
                this.postMessageTransfers = false;
              }
              this._readyCapability.resolve();
              messageHandler.send('configure', { verbosity: this.verbosity });
            } else {
              this._setupFakeWorker();
              messageHandler.destroy();
              worker.terminate();
            }
          });
          messageHandler.on('ready', data => {
            worker.removeEventListener('error', onWorkerError);
            if (this.destroyed) {
              terminateEarly();
              return;
            }
            try {
              sendTest();
            } catch (e) {
              this._setupFakeWorker();
            }
          });
          const sendTest = () => {
            let testObj = new Uint8Array([this.postMessageTransfers ? 255 : 0]);
            try {
              messageHandler.send('test', testObj, [testObj.buffer]);
            } catch (ex) {
              (0, _util.info)('Cannot use postMessage transfers');
              testObj[0] = 0;
              messageHandler.send('test', testObj);
            }
          };
          sendTest();
          return;
        } catch (e) {
          (0, _util.info)('The worker has been disabled.');
        }
      }
      this._setupFakeWorker();
    },
    _setupFakeWorker: function PDFWorker_setupFakeWorker() {
      if (!isWorkerDisabled) {
        (0, _util.warn)('Setting up fake worker.');
        isWorkerDisabled = true;
      }
      setupFakeWorkerGlobal().then(WorkerMessageHandler => {
        if (this.destroyed) {
          this._readyCapability.reject(new Error('Worker was destroyed'));
          return;
        }
        var isTypedArraysPresent = Uint8Array !== Float32Array;
        var port = new LoopbackPort(isTypedArraysPresent);
        this._port = port;
        var id = 'fake' + nextFakeWorkerId++;
        var workerHandler = new _util.MessageHandler(id + '_worker', id, port);
        WorkerMessageHandler.setup(workerHandler, port);
        var messageHandler = new _util.MessageHandler(id, id + '_worker', port);
        this._messageHandler = messageHandler;
        this._readyCapability.resolve();
      });
    },
    destroy: function PDFWorker_destroy() {
      this.destroyed = true;
      if (this._webWorker) {
        this._webWorker.terminate();
        this._webWorker = null;
      }
      pdfWorkerPorts.delete(this._port);
      this._port = null;
      if (this._messageHandler) {
        this._messageHandler.destroy();
        this._messageHandler = null;
      }
    }
  };
  PDFWorker.fromPort = function (params) {
    if (pdfWorkerPorts.has(params.port)) {
      return pdfWorkerPorts.get(params.port);
    }
    return new PDFWorker(params);
  };
  PDFWorker.getWorkerSrc = function () {
    return getWorkerSrc();
  };
  return PDFWorker;
}();
var WorkerTransport = function WorkerTransportClosure() {
  function WorkerTransport(messageHandler, loadingTask, networkStream, params, CMapReaderFactory) {
    this.messageHandler = messageHandler;
    this.loadingTask = loadingTask;
    this.commonObjs = new PDFObjects();
    this.fontLoader = new _font_loader.FontLoader(loadingTask.docId);
    this._params = params;
    this.CMapReaderFactory = new CMapReaderFactory({
      baseUrl: params.cMapUrl,
      isCompressed: params.cMapPacked
    });
    this.destroyed = false;
    this.destroyCapability = null;
    this._passwordCapability = null;
    this._networkStream = networkStream;
    this._fullReader = null;
    this._lastProgress = null;
    this.pageCache = [];
    this.pagePromises = [];
    this.downloadInfoCapability = (0, _util.createPromiseCapability)();
    this.setupMessageHandler();
  }
  WorkerTransport.prototype = {
    destroy: function WorkerTransport_destroy() {
      if (this.destroyCapability) {
        return this.destroyCapability.promise;
      }
      this.destroyed = true;
      this.destroyCapability = (0, _util.createPromiseCapability)();
      if (this._passwordCapability) {
        this._passwordCapability.reject(new Error('Worker was destroyed during onPassword callback'));
      }
      var waitOn = [];
      this.pageCache.forEach(function (page) {
        if (page) {
          waitOn.push(page._destroy());
        }
      });
      this.pageCache = [];
      this.pagePromises = [];
      var terminated = this.messageHandler.sendWithPromise('Terminate', null);
      waitOn.push(terminated);
      Promise.all(waitOn).then(() => {
        this.fontLoader.clear();
        if (this._networkStream) {
          this._networkStream.cancelAllRequests();
        }
        if (this.messageHandler) {
          this.messageHandler.destroy();
          this.messageHandler = null;
        }
        this.destroyCapability.resolve();
      }, this.destroyCapability.reject);
      return this.destroyCapability.promise;
    },
    setupMessageHandler: function WorkerTransport_setupMessageHandler() {
      var messageHandler = this.messageHandler;
      var loadingTask = this.loadingTask;
      messageHandler.on('GetReader', function (data, sink) {
        (0, _util.assert)(this._networkStream);
        this._fullReader = this._networkStream.getFullReader();
        this._fullReader.onProgress = evt => {
          this._lastProgress = {
            loaded: evt.loaded,
            total: evt.total
          };
        };
        sink.onPull = () => {
          this._fullReader.read().then(function ({ value, done }) {
            if (done) {
              sink.close();
              return;
            }
            (0, _util.assert)((0, _util.isArrayBuffer)(value));
            sink.enqueue(new Uint8Array(value), 1, [value]);
          }).catch(reason => {
            sink.error(reason);
          });
        };
        sink.onCancel = reason => {
          this._fullReader.cancel(reason);
        };
      }, this);
      messageHandler.on('ReaderHeadersReady', function (data) {
        let headersCapability = (0, _util.createPromiseCapability)();
        let fullReader = this._fullReader;
        fullReader.headersReady.then(() => {
          if (!fullReader.isStreamingSupported || !fullReader.isRangeSupported) {
            if (this._lastProgress) {
              let loadingTask = this.loadingTask;
              if (loadingTask.onProgress) {
                loadingTask.onProgress(this._lastProgress);
              }
            }
            fullReader.onProgress = evt => {
              let loadingTask = this.loadingTask;
              if (loadingTask.onProgress) {
                loadingTask.onProgress({
                  loaded: evt.loaded,
                  total: evt.total
                });
              }
            };
          }
          headersCapability.resolve({
            isStreamingSupported: fullReader.isStreamingSupported,
            isRangeSupported: fullReader.isRangeSupported,
            contentLength: fullReader.contentLength
          });
        }, headersCapability.reject);
        return headersCapability.promise;
      }, this);
      messageHandler.on('GetRangeReader', function (data, sink) {
        (0, _util.assert)(this._networkStream);
        let _rangeReader = this._networkStream.getRangeReader(data.begin, data.end);
        sink.onPull = () => {
          _rangeReader.read().then(function ({ value, done }) {
            if (done) {
              sink.close();
              return;
            }
            (0, _util.assert)((0, _util.isArrayBuffer)(value));
            sink.enqueue(new Uint8Array(value), 1, [value]);
          }).catch(reason => {
            sink.error(reason);
          });
        };
        sink.onCancel = reason => {
          _rangeReader.cancel(reason);
        };
      }, this);
      messageHandler.on('GetDoc', function transportDoc({ pdfInfo }) {
        this.numPages = pdfInfo.numPages;
        var loadingTask = this.loadingTask;
        var pdfDocument = new PDFDocumentProxy(pdfInfo, this, loadingTask);
        this.pdfDocument = pdfDocument;
        loadingTask._capability.resolve(pdfDocument);
      }, this);
      messageHandler.on('PasswordRequest', function transportPasswordRequest(exception) {
        this._passwordCapability = (0, _util.createPromiseCapability)();
        if (loadingTask.onPassword) {
          var updatePassword = password => {
            this._passwordCapability.resolve({ password });
          };
          loadingTask.onPassword(updatePassword, exception.code);
        } else {
          this._passwordCapability.reject(new _util.PasswordException(exception.message, exception.code));
        }
        return this._passwordCapability.promise;
      }, this);
      messageHandler.on('PasswordException', function transportPasswordException(exception) {
        loadingTask._capability.reject(new _util.PasswordException(exception.message, exception.code));
      }, this);
      messageHandler.on('InvalidPDF', function transportInvalidPDF(exception) {
        this.loadingTask._capability.reject(new _util.InvalidPDFException(exception.message));
      }, this);
      messageHandler.on('MissingPDF', function transportMissingPDF(exception) {
        this.loadingTask._capability.reject(new _util.MissingPDFException(exception.message));
      }, this);
      messageHandler.on('UnexpectedResponse', function transportUnexpectedResponse(exception) {
        this.loadingTask._capability.reject(new _util.UnexpectedResponseException(exception.message, exception.status));
      }, this);
      messageHandler.on('UnknownError', function transportUnknownError(exception) {
        this.loadingTask._capability.reject(new _util.UnknownErrorException(exception.message, exception.details));
      }, this);
      messageHandler.on('DataLoaded', function transportPage(data) {
        this.downloadInfoCapability.resolve(data);
      }, this);
      messageHandler.on('PDFManagerReady', function transportPage(data) {}, this);
      messageHandler.on('StartRenderPage', function transportRender(data) {
        if (this.destroyed) {
          return;
        }
        var page = this.pageCache[data.pageIndex];
        page._stats.timeEnd('Page Request');
        page._startRenderPage(data.transparency, data.intent);
      }, this);
      messageHandler.on('RenderPageChunk', function transportRender(data) {
        if (this.destroyed) {
          return;
        }
        var page = this.pageCache[data.pageIndex];
        page._renderPageChunk(data.operatorList, data.intent);
      }, this);
      messageHandler.on('commonobj', function transportObj(data) {
        if (this.destroyed) {
          return;
        }
        var id = data[0];
        var type = data[1];
        if (this.commonObjs.hasData(id)) {
          return;
        }
        switch (type) {
          case 'Font':
            var exportedData = data[2];
            let params = this._params;
            if ('error' in exportedData) {
              var exportedError = exportedData.error;
              (0, _util.warn)('Error during font loading: ' + exportedError);
              this.commonObjs.resolve(id, exportedError);
              break;
            }
            var fontRegistry = null;
            if (params.pdfBug && _global_scope2.default.FontInspector && _global_scope2.default.FontInspector.enabled) {
              fontRegistry = {
                registerFont(font, url) {
                  _global_scope2.default['FontInspector'].fontAdded(font, url);
                }
              };
            }
            var font = new _font_loader.FontFaceObject(exportedData, {
              isEvalSupported: params.isEvalSupported,
              disableFontFace: params.disableFontFace,
              fontRegistry
            });
            var fontReady = fontObjs => {
              this.commonObjs.resolve(id, font);
            };
            this.fontLoader.bind([font], fontReady);
            break;
          case 'FontPath':
            this.commonObjs.resolve(id, data[2]);
            break;
          default:
            throw new Error(`Got unknown common object type ${type}`);
        }
      }, this);
      messageHandler.on('obj', function transportObj(data) {
        if (this.destroyed) {
          return;
        }
        var id = data[0];
        var pageIndex = data[1];
        var type = data[2];
        var pageProxy = this.pageCache[pageIndex];
        var imageData;
        if (pageProxy.objs.hasData(id)) {
          return;
        }
        switch (type) {
          case 'JpegStream':
            imageData = data[3];
            return new Promise((resolve, reject) => {
              const img = new Image();
              img.onload = function () {
                resolve(img);
              };
              img.onerror = function () {
                reject(new Error('Error during JPEG image loading'));
              };
              img.src = imageData;
            }).then(img => {
              pageProxy.objs.resolve(id, img);
            });
          case 'Image':
            imageData = data[3];
            pageProxy.objs.resolve(id, imageData);
            var MAX_IMAGE_SIZE_TO_STORE = 8000000;
            if (imageData && 'data' in imageData && imageData.data.length > MAX_IMAGE_SIZE_TO_STORE) {
              pageProxy.cleanupAfterRender = true;
            }
            break;
          default:
            throw new Error(`Got unknown object type ${type}`);
        }
      }, this);
      messageHandler.on('DocProgress', function transportDocProgress(data) {
        if (this.destroyed) {
          return;
        }
        var loadingTask = this.loadingTask;
        if (loadingTask.onProgress) {
          loadingTask.onProgress({
            loaded: data.loaded,
            total: data.total
          });
        }
      }, this);
      messageHandler.on('PageError', function transportError(data) {
        if (this.destroyed) {
          return;
        }
        var page = this.pageCache[data.pageNum - 1];
        var intentState = page.intentStates[data.intent];
        if (intentState.displayReadyCapability) {
          intentState.displayReadyCapability.reject(data.error);
        } else {
          throw new Error(data.error);
        }
        if (intentState.operatorList) {
          intentState.operatorList.lastChunk = true;
          for (var i = 0; i < intentState.renderTasks.length; i++) {
            intentState.renderTasks[i].operatorListChanged();
          }
        }
      }, this);
      messageHandler.on('UnsupportedFeature', function (data) {
        if (this.destroyed) {
          return;
        }
        let loadingTask = this.loadingTask;
        if (loadingTask.onUnsupportedFeature) {
          loadingTask.onUnsupportedFeature(data.featureId);
        }
      }, this);
      messageHandler.on('JpegDecode', function (data) {
        if (this.destroyed) {
          return Promise.reject(new Error('Worker was destroyed'));
        }
        if (typeof document === 'undefined') {
          return Promise.reject(new Error('"document" is not defined.'));
        }
        var imageUrl = data[0];
        var components = data[1];
        if (components !== 3 && components !== 1) {
          return Promise.reject(new Error('Only 3 components or 1 component can be returned'));
        }
        return new Promise(function (resolve, reject) {
          var img = new Image();
          img.onload = function () {
            var width = img.width;
            var height = img.height;
            var size = width * height;
            var rgbaLength = size * 4;
            var buf = new Uint8Array(size * components);
            var tmpCanvas = document.createElement('canvas');
            tmpCanvas.width = width;
            tmpCanvas.height = height;
            var tmpCtx = tmpCanvas.getContext('2d');
            tmpCtx.drawImage(img, 0, 0);
            var data = tmpCtx.getImageData(0, 0, width, height).data;
            var i, j;
            if (components === 3) {
              for (i = 0, j = 0; i < rgbaLength; i += 4, j += 3) {
                buf[j] = data[i];
                buf[j + 1] = data[i + 1];
                buf[j + 2] = data[i + 2];
              }
            } else if (components === 1) {
              for (i = 0, j = 0; i < rgbaLength; i += 4, j++) {
                buf[j] = data[i];
              }
            }
            resolve({
              data: buf,
              width,
              height
            });
          };
          img.onerror = function () {
            reject(new Error('JpegDecode failed to load image'));
          };
          img.src = imageUrl;
        });
      }, this);
      messageHandler.on('FetchBuiltInCMap', function (data) {
        if (this.destroyed) {
          return Promise.reject(new Error('Worker was destroyed'));
        }
        return this.CMapReaderFactory.fetch({ name: data.name });
      }, this);
    },
    getData: function WorkerTransport_getData() {
      return this.messageHandler.sendWithPromise('GetData', null);
    },
    getPage(pageNumber) {
      if (!Number.isInteger(pageNumber) || pageNumber <= 0 || pageNumber > this.numPages) {
        return Promise.reject(new Error('Invalid page request'));
      }
      var pageIndex = pageNumber - 1;
      if (pageIndex in this.pagePromises) {
        return this.pagePromises[pageIndex];
      }
      var promise = this.messageHandler.sendWithPromise('GetPage', { pageIndex }).then(pageInfo => {
        if (this.destroyed) {
          throw new Error('Transport destroyed');
        }
        let page = new PDFPageProxy(pageIndex, pageInfo, this, this._params.pdfBug);
        this.pageCache[pageIndex] = page;
        return page;
      });
      this.pagePromises[pageIndex] = promise;
      return promise;
    },
    getPageIndex: function WorkerTransport_getPageIndexByRef(ref) {
      return this.messageHandler.sendWithPromise('GetPageIndex', { ref }).catch(function (reason) {
        return Promise.reject(new Error(reason));
      });
    },
    getAnnotations: function WorkerTransport_getAnnotations(pageIndex, intent) {
      return this.messageHandler.sendWithPromise('GetAnnotations', {
        pageIndex,
        intent
      });
    },
    getDestinations: function WorkerTransport_getDestinations() {
      return this.messageHandler.sendWithPromise('GetDestinations', null);
    },
    getDestination: function WorkerTransport_getDestination(id) {
      return this.messageHandler.sendWithPromise('GetDestination', { id });
    },
    getPageLabels: function WorkerTransport_getPageLabels() {
      return this.messageHandler.sendWithPromise('GetPageLabels', null);
    },
    getPageMode() {
      return this.messageHandler.sendWithPromise('GetPageMode', null);
    },
    getAttachments: function WorkerTransport_getAttachments() {
      return this.messageHandler.sendWithPromise('GetAttachments', null);
    },
    getJavaScript: function WorkerTransport_getJavaScript() {
      return this.messageHandler.sendWithPromise('GetJavaScript', null);
    },
    getOutline: function WorkerTransport_getOutline() {
      return this.messageHandler.sendWithPromise('GetOutline', null);
    },
    getMetadata: function WorkerTransport_getMetadata() {
      return this.messageHandler.sendWithPromise('GetMetadata', null).then(results => {
        return {
          info: results[0],
          metadata: results[1] ? new _metadata.Metadata(results[1]) : null,
          contentDispositionFilename: this._fullReader ? this._fullReader.filename : null
        };
      });
    },
    getStats: function WorkerTransport_getStats() {
      return this.messageHandler.sendWithPromise('GetStats', null);
    },
    startCleanup: function WorkerTransport_startCleanup() {
      this.messageHandler.sendWithPromise('Cleanup', null).then(() => {
        for (var i = 0, ii = this.pageCache.length; i < ii; i++) {
          var page = this.pageCache[i];
          if (page) {
            page.cleanup();
          }
        }
        this.commonObjs.clear();
        this.fontLoader.clear();
      });
    },
    get loadingParams() {
      let params = this._params;
      return (0, _util.shadow)(this, 'loadingParams', {
        disableRange: params.disableRange,
        disableStream: params.disableStream,
        disableAutoFetch: params.disableAutoFetch,
        disableCreateObjectURL: params.disableCreateObjectURL
      });
    }
  };
  return WorkerTransport;
}();
var PDFObjects = function PDFObjectsClosure() {
  function PDFObjects() {
    this.objs = Object.create(null);
  }
  PDFObjects.prototype = {
    ensureObj: function PDFObjects_ensureObj(objId) {
      if (this.objs[objId]) {
        return this.objs[objId];
      }
      var obj = {
        capability: (0, _util.createPromiseCapability)(),
        data: null,
        resolved: false
      };
      this.objs[objId] = obj;
      return obj;
    },
    get: function PDFObjects_get(objId, callback) {
      if (callback) {
        this.ensureObj(objId).capability.promise.then(callback);
        return null;
      }
      var obj = this.objs[objId];
      if (!obj || !obj.resolved) {
        throw new Error(`Requesting object that isn't resolved yet ${objId}`);
      }
      return obj.data;
    },
    resolve: function PDFObjects_resolve(objId, data) {
      var obj = this.ensureObj(objId);
      obj.resolved = true;
      obj.data = data;
      obj.capability.resolve(data);
    },
    isResolved: function PDFObjects_isResolved(objId) {
      var objs = this.objs;
      if (!objs[objId]) {
        return false;
      }
      return objs[objId].resolved;
    },
    hasData: function PDFObjects_hasData(objId) {
      return this.isResolved(objId);
    },
    getData: function PDFObjects_getData(objId) {
      var objs = this.objs;
      if (!objs[objId] || !objs[objId].resolved) {
        return null;
      }
      return objs[objId].data;
    },
    clear: function PDFObjects_clear() {
      this.objs = Object.create(null);
    }
  };
  return PDFObjects;
}();
var RenderTask = function RenderTaskClosure() {
  function RenderTask(internalRenderTask) {
    this._internalRenderTask = internalRenderTask;
    this.onContinue = null;
  }
  RenderTask.prototype = {
    get promise() {
      return this._internalRenderTask.capability.promise;
    },
    cancel: function RenderTask_cancel() {
      this._internalRenderTask.cancel();
    },
    then: function RenderTask_then(onFulfilled, onRejected) {
      return this.promise.then.apply(this.promise, arguments);
    }
  };
  return RenderTask;
}();
var InternalRenderTask = function InternalRenderTaskClosure() {
  let canvasInRendering = new WeakMap();
  function InternalRenderTask(callback, params, objs, commonObjs, operatorList, pageNumber, canvasFactory, webGLContext, pdfBug = false) {
    this.callback = callback;
    this.params = params;
    this.objs = objs;
    this.commonObjs = commonObjs;
    this.operatorListIdx = null;
    this.operatorList = operatorList;
    this.pageNumber = pageNumber;
    this.canvasFactory = canvasFactory;
    this.webGLContext = webGLContext;
    this._pdfBug = pdfBug;
    this.running = false;
    this.graphicsReadyCallback = null;
    this.graphicsReady = false;
    this.useRequestAnimationFrame = false;
    this.cancelled = false;
    this.capability = (0, _util.createPromiseCapability)();
    this.task = new RenderTask(this);
    this._continueBound = this._continue.bind(this);
    this._scheduleNextBound = this._scheduleNext.bind(this);
    this._nextBound = this._next.bind(this);
    this._canvas = params.canvasContext.canvas;
  }
  InternalRenderTask.prototype = {
    initializeGraphics: function InternalRenderTask_initializeGraphics(transparency) {
      if (this._canvas) {
        if (canvasInRendering.has(this._canvas)) {
          throw new Error('Cannot use the same canvas during multiple render() operations. ' + 'Use different canvas or ensure previous operations were ' + 'cancelled or completed.');
        }
        canvasInRendering.set(this._canvas, this);
      }
      if (this.cancelled) {
        return;
      }
      if (this._pdfBug && _global_scope2.default.StepperManager && _global_scope2.default.StepperManager.enabled) {
        this.stepper = _global_scope2.default.StepperManager.create(this.pageNumber - 1);
        this.stepper.init(this.operatorList);
        this.stepper.nextBreakPoint = this.stepper.getNextBreakPoint();
      }
      var params = this.params;
      this.gfx = new _canvas.CanvasGraphics(params.canvasContext, this.commonObjs, this.objs, this.canvasFactory, this.webGLContext, params.imageLayer);
      this.gfx.beginDrawing({
        transform: params.transform,
        viewport: params.viewport,
        transparency,
        background: params.background
      });
      this.operatorListIdx = 0;
      this.graphicsReady = true;
      if (this.graphicsReadyCallback) {
        this.graphicsReadyCallback();
      }
    },
    cancel: function InternalRenderTask_cancel() {
      this.running = false;
      this.cancelled = true;
      if (this._canvas) {
        canvasInRendering.delete(this._canvas);
      }
      this.callback(new _dom_utils.RenderingCancelledException('Rendering cancelled, page ' + this.pageNumber, 'canvas'));
    },
    operatorListChanged: function InternalRenderTask_operatorListChanged() {
      if (!this.graphicsReady) {
        if (!this.graphicsReadyCallback) {
          this.graphicsReadyCallback = this._continueBound;
        }
        return;
      }
      if (this.stepper) {
        this.stepper.updateOperatorList(this.operatorList);
      }
      if (this.running) {
        return;
      }
      this._continue();
    },
    _continue: function InternalRenderTask__continue() {
      this.running = true;
      if (this.cancelled) {
        return;
      }
      if (this.task.onContinue) {
        this.task.onContinue(this._scheduleNextBound);
      } else {
        this._scheduleNext();
      }
    },
    _scheduleNext: function InternalRenderTask__scheduleNext() {
      if (this.useRequestAnimationFrame && typeof window !== 'undefined') {
        window.requestAnimationFrame(this._nextBound);
      } else {
        Promise.resolve(undefined).then(this._nextBound);
      }
    },
    _next: function InternalRenderTask__next() {
      if (this.cancelled) {
        return;
      }
      this.operatorListIdx = this.gfx.executeOperatorList(this.operatorList, this.operatorListIdx, this._continueBound, this.stepper);
      if (this.operatorListIdx === this.operatorList.argsArray.length) {
        this.running = false;
        if (this.operatorList.lastChunk) {
          this.gfx.endDrawing();
          if (this._canvas) {
            canvasInRendering.delete(this._canvas);
          }
          this.callback();
        }
      }
    }
  };
  return InternalRenderTask;
}();
var version, build;
{
  exports.version = version = '2.0.447';
  exports.build = build = 'c0b22da0';
}
exports.getDocument = getDocument;
exports.LoopbackPort = LoopbackPort;
exports.PDFDataRangeTransport = PDFDataRangeTransport;
exports.PDFWorker = PDFWorker;
exports.PDFDocumentProxy = PDFDocumentProxy;
exports.PDFPageProxy = PDFPageProxy;
exports.setPDFNetworkStreamFactory = setPDFNetworkStreamFactory;
exports.version = version;
exports.build = build;

/***/ }),
/* 10 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.FontLoader = exports.FontFaceObject = undefined;

var _util = __w_pdfjs_require__(0);

function FontLoader(docId) {
  this.docId = docId;
  this.styleElement = null;
}
FontLoader.prototype = {
  insertRule: function fontLoaderInsertRule(rule) {
    var styleElement = this.styleElement;
    if (!styleElement) {
      styleElement = this.styleElement = document.createElement('style');
      styleElement.id = 'PDFJS_FONT_STYLE_TAG_' + this.docId;
      document.documentElement.getElementsByTagName('head')[0].appendChild(styleElement);
    }
    var styleSheet = styleElement.sheet;
    styleSheet.insertRule(rule, styleSheet.cssRules.length);
  },
  clear: function fontLoaderClear() {
    if (this.styleElement) {
      this.styleElement.remove();
      this.styleElement = null;
    }
  }
};
{
  FontLoader.prototype.bind = function fontLoaderBind(fonts, callback) {
    for (var i = 0, ii = fonts.length; i < ii; i++) {
      var font = fonts[i];
      if (font.attached) {
        continue;
      }
      font.attached = true;
      var rule = font.createFontFaceRule();
      if (rule) {
        this.insertRule(rule);
      }
    }
    setTimeout(callback);
  };
}
;
;
var IsEvalSupportedCached = {
  get value() {
    return (0, _util.shadow)(this, 'value', (0, _util.isEvalSupported)());
  }
};
var FontFaceObject = function FontFaceObjectClosure() {
  function FontFaceObject(translatedData, { isEvalSupported = true, disableFontFace = false, fontRegistry = null }) {
    this.compiledGlyphs = Object.create(null);
    for (var i in translatedData) {
      this[i] = translatedData[i];
    }
    this.isEvalSupported = isEvalSupported !== false;
    this.disableFontFace = disableFontFace === true;
    this.fontRegistry = fontRegistry;
  }
  FontFaceObject.prototype = {
    createNativeFontFace: function FontFaceObject_createNativeFontFace() {
      throw new Error('Not implemented: createNativeFontFace');
    },
    createFontFaceRule: function FontFaceObject_createFontFaceRule() {
      if (!this.data || this.disableFontFace) {
        return null;
      }
      var data = (0, _util.bytesToString)(new Uint8Array(this.data));
      var fontName = this.loadedName;
      var url = 'url(data:' + this.mimetype + ';base64,' + btoa(data) + ');';
      var rule = '@font-face { font-family:"' + fontName + '";src:' + url + '}';
      if (this.fontRegistry) {
        this.fontRegistry.registerFont(this, url);
      }
      return rule;
    },
    getPathGenerator: function FontFaceObject_getPathGenerator(objs, character) {
      if (!(character in this.compiledGlyphs)) {
        var cmds = objs.get(this.loadedName + '_path_' + character);
        var current, i, len;
        if (this.isEvalSupported && IsEvalSupportedCached.value) {
          var args,
              js = '';
          for (i = 0, len = cmds.length; i < len; i++) {
            current = cmds[i];
            if (current.args !== undefined) {
              args = current.args.join(',');
            } else {
              args = '';
            }
            js += 'c.' + current.cmd + '(' + args + ');\n';
          }
          this.compiledGlyphs[character] = new Function('c', 'size', js);
        } else {
          this.compiledGlyphs[character] = function (c, size) {
            for (i = 0, len = cmds.length; i < len; i++) {
              current = cmds[i];
              if (current.cmd === 'scale') {
                current.args = [size, -size];
              }
              c[current.cmd].apply(c, current.args);
            }
          };
        }
      }
      return this.compiledGlyphs[character];
    }
  };
  return FontFaceObject;
}();
exports.FontFaceObject = FontFaceObject;
exports.FontLoader = FontLoader;

/***/ }),
/* 11 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.CanvasGraphics = undefined;

var _util = __w_pdfjs_require__(0);

var _pattern_helper = __w_pdfjs_require__(12);

var MIN_FONT_SIZE = 16;
var MAX_FONT_SIZE = 100;
var MAX_GROUP_SIZE = 4096;
var MIN_WIDTH_FACTOR = 0.65;
var COMPILE_TYPE3_GLYPHS = true;
var MAX_SIZE_TO_COMPILE = 1000;
var FULL_CHUNK_HEIGHT = 16;
var IsLittleEndianCached = {
  get value() {
    return (0, _util.shadow)(IsLittleEndianCached, 'value', (0, _util.isLittleEndian)());
  }
};
function addContextCurrentTransform(ctx) {
  if (!ctx.mozCurrentTransform) {
    ctx._originalSave = ctx.save;
    ctx._originalRestore = ctx.restore;
    ctx._originalRotate = ctx.rotate;
    ctx._originalScale = ctx.scale;
    ctx._originalTranslate = ctx.translate;
    ctx._originalTransform = ctx.transform;
    ctx._originalSetTransform = ctx.setTransform;
    ctx._transformMatrix = ctx._transformMatrix || [1, 0, 0, 1, 0, 0];
    ctx._transformStack = [];
    Object.defineProperty(ctx, 'mozCurrentTransform', {
      get: function getCurrentTransform() {
        return this._transformMatrix;
      }
    });
    Object.defineProperty(ctx, 'mozCurrentTransformInverse', {
      get: function getCurrentTransformInverse() {
        var m = this._transformMatrix;
        var a = m[0],
            b = m[1],
            c = m[2],
            d = m[3],
            e = m[4],
            f = m[5];
        var ad_bc = a * d - b * c;
        var bc_ad = b * c - a * d;
        return [d / ad_bc, b / bc_ad, c / bc_ad, a / ad_bc, (d * e - c * f) / bc_ad, (b * e - a * f) / ad_bc];
      }
    });
    ctx.save = function ctxSave() {
      var old = this._transformMatrix;
      this._transformStack.push(old);
      this._transformMatrix = old.slice(0, 6);
      this._originalSave();
    };
    ctx.restore = function ctxRestore() {
      var prev = this._transformStack.pop();
      if (prev) {
        this._transformMatrix = prev;
        this._originalRestore();
      }
    };
    ctx.translate = function ctxTranslate(x, y) {
      var m = this._transformMatrix;
      m[4] = m[0] * x + m[2] * y + m[4];
      m[5] = m[1] * x + m[3] * y + m[5];
      this._originalTranslate(x, y);
    };
    ctx.scale = function ctxScale(x, y) {
      var m = this._transformMatrix;
      m[0] = m[0] * x;
      m[1] = m[1] * x;
      m[2] = m[2] * y;
      m[3] = m[3] * y;
      this._originalScale(x, y);
    };
    ctx.transform = function ctxTransform(a, b, c, d, e, f) {
      var m = this._transformMatrix;
      this._transformMatrix = [m[0] * a + m[2] * b, m[1] * a + m[3] * b, m[0] * c + m[2] * d, m[1] * c + m[3] * d, m[0] * e + m[2] * f + m[4], m[1] * e + m[3] * f + m[5]];
      ctx._originalTransform(a, b, c, d, e, f);
    };
    ctx.setTransform = function ctxSetTransform(a, b, c, d, e, f) {
      this._transformMatrix = [a, b, c, d, e, f];
      ctx._originalSetTransform(a, b, c, d, e, f);
    };
    ctx.rotate = function ctxRotate(angle) {
      var cosValue = Math.cos(angle);
      var sinValue = Math.sin(angle);
      var m = this._transformMatrix;
      this._transformMatrix = [m[0] * cosValue + m[2] * sinValue, m[1] * cosValue + m[3] * sinValue, m[0] * -sinValue + m[2] * cosValue, m[1] * -sinValue + m[3] * cosValue, m[4], m[5]];
      this._originalRotate(angle);
    };
  }
}
var CachedCanvases = function CachedCanvasesClosure() {
  function CachedCanvases(canvasFactory) {
    this.canvasFactory = canvasFactory;
    this.cache = Object.create(null);
  }
  CachedCanvases.prototype = {
    getCanvas: function CachedCanvases_getCanvas(id, width, height, trackTransform) {
      var canvasEntry;
      if (this.cache[id] !== undefined) {
        canvasEntry = this.cache[id];
        this.canvasFactory.reset(canvasEntry, width, height);
        canvasEntry.context.setTransform(1, 0, 0, 1, 0, 0);
      } else {
        canvasEntry = this.canvasFactory.create(width, height);
        this.cache[id] = canvasEntry;
      }
      if (trackTransform) {
        addContextCurrentTransform(canvasEntry.context);
      }
      return canvasEntry;
    },
    clear() {
      for (var id in this.cache) {
        var canvasEntry = this.cache[id];
        this.canvasFactory.destroy(canvasEntry);
        delete this.cache[id];
      }
    }
  };
  return CachedCanvases;
}();
function compileType3Glyph(imgData) {
  var POINT_TO_PROCESS_LIMIT = 1000;
  var width = imgData.width,
      height = imgData.height;
  var i,
      j,
      j0,
      width1 = width + 1;
  var points = new Uint8Array(width1 * (height + 1));
  var POINT_TYPES = new Uint8Array([0, 2, 4, 0, 1, 0, 5, 4, 8, 10, 0, 8, 0, 2, 1, 0]);
  var lineSize = width + 7 & ~7,
      data0 = imgData.data;
  var data = new Uint8Array(lineSize * height),
      pos = 0,
      ii;
  for (i = 0, ii = data0.length; i < ii; i++) {
    var mask = 128,
        elem = data0[i];
    while (mask > 0) {
      data[pos++] = elem & mask ? 0 : 255;
      mask >>= 1;
    }
  }
  var count = 0;
  pos = 0;
  if (data[pos] !== 0) {
    points[0] = 1;
    ++count;
  }
  for (j = 1; j < width; j++) {
    if (data[pos] !== data[pos + 1]) {
      points[j] = data[pos] ? 2 : 1;
      ++count;
    }
    pos++;
  }
  if (data[pos] !== 0) {
    points[j] = 2;
    ++count;
  }
  for (i = 1; i < height; i++) {
    pos = i * lineSize;
    j0 = i * width1;
    if (data[pos - lineSize] !== data[pos]) {
      points[j0] = data[pos] ? 1 : 8;
      ++count;
    }
    var sum = (data[pos] ? 4 : 0) + (data[pos - lineSize] ? 8 : 0);
    for (j = 1; j < width; j++) {
      sum = (sum >> 2) + (data[pos + 1] ? 4 : 0) + (data[pos - lineSize + 1] ? 8 : 0);
      if (POINT_TYPES[sum]) {
        points[j0 + j] = POINT_TYPES[sum];
        ++count;
      }
      pos++;
    }
    if (data[pos - lineSize] !== data[pos]) {
      points[j0 + j] = data[pos] ? 2 : 4;
      ++count;
    }
    if (count > POINT_TO_PROCESS_LIMIT) {
      return null;
    }
  }
  pos = lineSize * (height - 1);
  j0 = i * width1;
  if (data[pos] !== 0) {
    points[j0] = 8;
    ++count;
  }
  for (j = 1; j < width; j++) {
    if (data[pos] !== data[pos + 1]) {
      points[j0 + j] = data[pos] ? 4 : 8;
      ++count;
    }
    pos++;
  }
  if (data[pos] !== 0) {
    points[j0 + j] = 4;
    ++count;
  }
  if (count > POINT_TO_PROCESS_LIMIT) {
    return null;
  }
  var steps = new Int32Array([0, width1, -1, 0, -width1, 0, 0, 0, 1]);
  var outlines = [];
  for (i = 0; count && i <= height; i++) {
    var p = i * width1;
    var end = p + width;
    while (p < end && !points[p]) {
      p++;
    }
    if (p === end) {
      continue;
    }
    var coords = [p % width1, i];
    var type = points[p],
        p0 = p,
        pp;
    do {
      var step = steps[type];
      do {
        p += step;
      } while (!points[p]);
      pp = points[p];
      if (pp !== 5 && pp !== 10) {
        type = pp;
        points[p] = 0;
      } else {
        type = pp & 0x33 * type >> 4;
        points[p] &= type >> 2 | type << 2;
      }
      coords.push(p % width1);
      coords.push(p / width1 | 0);
      --count;
    } while (p0 !== p);
    outlines.push(coords);
    --i;
  }
  var drawOutline = function (c) {
    c.save();
    c.scale(1 / width, -1 / height);
    c.translate(0, -height);
    c.beginPath();
    for (var i = 0, ii = outlines.length; i < ii; i++) {
      var o = outlines[i];
      c.moveTo(o[0], o[1]);
      for (var j = 2, jj = o.length; j < jj; j += 2) {
        c.lineTo(o[j], o[j + 1]);
      }
    }
    c.fill();
    c.beginPath();
    c.restore();
  };
  return drawOutline;
}
var CanvasExtraState = function CanvasExtraStateClosure() {
  function CanvasExtraState() {
    this.alphaIsShape = false;
    this.fontSize = 0;
    this.fontSizeScale = 1;
    this.textMatrix = _util.IDENTITY_MATRIX;
    this.textMatrixScale = 1;
    this.fontMatrix = _util.FONT_IDENTITY_MATRIX;
    this.leading = 0;
    this.x = 0;
    this.y = 0;
    this.lineX = 0;
    this.lineY = 0;
    this.charSpacing = 0;
    this.wordSpacing = 0;
    this.textHScale = 1;
    this.textRenderingMode = _util.TextRenderingMode.FILL;
    this.textRise = 0;
    this.fillColor = '#000000';
    this.strokeColor = '#000000';
    this.patternFill = false;
    this.fillAlpha = 1;
    this.strokeAlpha = 1;
    this.lineWidth = 1;
    this.activeSMask = null;
    this.resumeSMaskCtx = null;
  }
  CanvasExtraState.prototype = {
    clone: function CanvasExtraState_clone() {
      return Object.create(this);
    },
    setCurrentPoint: function CanvasExtraState_setCurrentPoint(x, y) {
      this.x = x;
      this.y = y;
    }
  };
  return CanvasExtraState;
}();
var CanvasGraphics = function CanvasGraphicsClosure() {
  var EXECUTION_TIME = 15;
  var EXECUTION_STEPS = 10;
  function CanvasGraphics(canvasCtx, commonObjs, objs, canvasFactory, webGLContext, imageLayer) {
    this.ctx = canvasCtx;
    this.current = new CanvasExtraState();
    this.stateStack = [];
    this.pendingClip = null;
    this.pendingEOFill = false;
    this.res = null;
    this.xobjs = null;
    this.commonObjs = commonObjs;
    this.objs = objs;
    this.canvasFactory = canvasFactory;
    this.webGLContext = webGLContext;
    this.imageLayer = imageLayer;
    this.groupStack = [];
    this.processingType3 = null;
    this.baseTransform = null;
    this.baseTransformStack = [];
    this.groupLevel = 0;
    this.smaskStack = [];
    this.smaskCounter = 0;
    this.tempSMask = null;
    this.cachedCanvases = new CachedCanvases(this.canvasFactory);
    if (canvasCtx) {
      addContextCurrentTransform(canvasCtx);
    }
    this.cachedGetSinglePixelWidth = null;
  }
  function putBinaryImageData(ctx, imgData) {
    if (typeof ImageData !== 'undefined' && imgData instanceof ImageData) {
      ctx.putImageData(imgData, 0, 0);
      return;
    }
    var height = imgData.height,
        width = imgData.width;
    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
    var srcPos = 0,
        destPos;
    var src = imgData.data;
    var dest = chunkImgData.data;
    var i, j, thisChunkHeight, elemsInThisChunk;
    if (imgData.kind === _util.ImageKind.GRAYSCALE_1BPP) {
      var srcLength = src.byteLength;
      var dest32 = new Uint32Array(dest.buffer, 0, dest.byteLength >> 2);
      var dest32DataLength = dest32.length;
      var fullSrcDiff = width + 7 >> 3;
      var white = 0xFFFFFFFF;
      var black = IsLittleEndianCached.value ? 0xFF000000 : 0x000000FF;
      for (i = 0; i < totalChunks; i++) {
        thisChunkHeight = i < fullChunks ? FULL_CHUNK_HEIGHT : partialChunkHeight;
        destPos = 0;
        for (j = 0; j < thisChunkHeight; j++) {
          var srcDiff = srcLength - srcPos;
          var k = 0;
          var kEnd = srcDiff > fullSrcDiff ? width : srcDiff * 8 - 7;
          var kEndUnrolled = kEnd & ~7;
          var mask = 0;
          var srcByte = 0;
          for (; k < kEndUnrolled; k += 8) {
            srcByte = src[srcPos++];
            dest32[destPos++] = srcByte & 128 ? white : black;
            dest32[destPos++] = srcByte & 64 ? white : black;
            dest32[destPos++] = srcByte & 32 ? white : black;
            dest32[destPos++] = srcByte & 16 ? white : black;
            dest32[destPos++] = srcByte & 8 ? white : black;
            dest32[destPos++] = srcByte & 4 ? white : black;
            dest32[destPos++] = srcByte & 2 ? white : black;
            dest32[destPos++] = srcByte & 1 ? white : black;
          }
          for (; k < kEnd; k++) {
            if (mask === 0) {
              srcByte = src[srcPos++];
              mask = 128;
            }
            dest32[destPos++] = srcByte & mask ? white : black;
            mask >>= 1;
          }
        }
        while (destPos < dest32DataLength) {
          dest32[destPos++] = 0;
        }
        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
      }
    } else if (imgData.kind === _util.ImageKind.RGBA_32BPP) {
      j = 0;
      elemsInThisChunk = width * FULL_CHUNK_HEIGHT * 4;
      for (i = 0; i < fullChunks; i++) {
        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
        srcPos += elemsInThisChunk;
        ctx.putImageData(chunkImgData, 0, j);
        j += FULL_CHUNK_HEIGHT;
      }
      if (i < totalChunks) {
        elemsInThisChunk = width * partialChunkHeight * 4;
        dest.set(src.subarray(srcPos, srcPos + elemsInThisChunk));
        ctx.putImageData(chunkImgData, 0, j);
      }
    } else if (imgData.kind === _util.ImageKind.RGB_24BPP) {
      thisChunkHeight = FULL_CHUNK_HEIGHT;
      elemsInThisChunk = width * thisChunkHeight;
      for (i = 0; i < totalChunks; i++) {
        if (i >= fullChunks) {
          thisChunkHeight = partialChunkHeight;
          elemsInThisChunk = width * thisChunkHeight;
        }
        destPos = 0;
        for (j = elemsInThisChunk; j--;) {
          dest[destPos++] = src[srcPos++];
          dest[destPos++] = src[srcPos++];
          dest[destPos++] = src[srcPos++];
          dest[destPos++] = 255;
        }
        ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
      }
    } else {
      throw new Error(`bad image kind: ${imgData.kind}`);
    }
  }
  function putBinaryImageMask(ctx, imgData) {
    var height = imgData.height,
        width = imgData.width;
    var partialChunkHeight = height % FULL_CHUNK_HEIGHT;
    var fullChunks = (height - partialChunkHeight) / FULL_CHUNK_HEIGHT;
    var totalChunks = partialChunkHeight === 0 ? fullChunks : fullChunks + 1;
    var chunkImgData = ctx.createImageData(width, FULL_CHUNK_HEIGHT);
    var srcPos = 0;
    var src = imgData.data;
    var dest = chunkImgData.data;
    for (var i = 0; i < totalChunks; i++) {
      var thisChunkHeight = i < fullChunks ? FULL_CHUNK_HEIGHT : partialChunkHeight;
      var destPos = 3;
      for (var j = 0; j < thisChunkHeight; j++) {
        var mask = 0;
        for (var k = 0; k < width; k++) {
          if (!mask) {
            var elem = src[srcPos++];
            mask = 128;
          }
          dest[destPos] = elem & mask ? 0 : 255;
          destPos += 4;
          mask >>= 1;
        }
      }
      ctx.putImageData(chunkImgData, 0, i * FULL_CHUNK_HEIGHT);
    }
  }
  function copyCtxState(sourceCtx, destCtx) {
    var properties = ['strokeStyle', 'fillStyle', 'fillRule', 'globalAlpha', 'lineWidth', 'lineCap', 'lineJoin', 'miterLimit', 'globalCompositeOperation', 'font'];
    for (var i = 0, ii = properties.length; i < ii; i++) {
      var property = properties[i];
      if (sourceCtx[property] !== undefined) {
        destCtx[property] = sourceCtx[property];
      }
    }
    if (sourceCtx.setLineDash !== undefined) {
      destCtx.setLineDash(sourceCtx.getLineDash());
      destCtx.lineDashOffset = sourceCtx.lineDashOffset;
    }
  }
  function resetCtxToDefault(ctx) {
    ctx.strokeStyle = '#000000';
    ctx.fillStyle = '#000000';
    ctx.fillRule = 'nonzero';
    ctx.globalAlpha = 1;
    ctx.lineWidth = 1;
    ctx.lineCap = 'butt';
    ctx.lineJoin = 'miter';
    ctx.miterLimit = 10;
    ctx.globalCompositeOperation = 'source-over';
    ctx.font = '10px sans-serif';
    if (ctx.setLineDash !== undefined) {
      ctx.setLineDash([]);
      ctx.lineDashOffset = 0;
    }
  }
  function composeSMaskBackdrop(bytes, r0, g0, b0) {
    var length = bytes.length;
    for (var i = 3; i < length; i += 4) {
      var alpha = bytes[i];
      if (alpha === 0) {
        bytes[i - 3] = r0;
        bytes[i - 2] = g0;
        bytes[i - 1] = b0;
      } else if (alpha < 255) {
        var alpha_ = 255 - alpha;
        bytes[i - 3] = bytes[i - 3] * alpha + r0 * alpha_ >> 8;
        bytes[i - 2] = bytes[i - 2] * alpha + g0 * alpha_ >> 8;
        bytes[i - 1] = bytes[i - 1] * alpha + b0 * alpha_ >> 8;
      }
    }
  }
  function composeSMaskAlpha(maskData, layerData, transferMap) {
    var length = maskData.length;
    var scale = 1 / 255;
    for (var i = 3; i < length; i += 4) {
      var alpha = transferMap ? transferMap[maskData[i]] : maskData[i];
      layerData[i] = layerData[i] * alpha * scale | 0;
    }
  }
  function composeSMaskLuminosity(maskData, layerData, transferMap) {
    var length = maskData.length;
    for (var i = 3; i < length; i += 4) {
      var y = maskData[i - 3] * 77 + maskData[i - 2] * 152 + maskData[i - 1] * 28;
      layerData[i] = transferMap ? layerData[i] * transferMap[y >> 8] >> 8 : layerData[i] * y >> 16;
    }
  }
  function genericComposeSMask(maskCtx, layerCtx, width, height, subtype, backdrop, transferMap) {
    var hasBackdrop = !!backdrop;
    var r0 = hasBackdrop ? backdrop[0] : 0;
    var g0 = hasBackdrop ? backdrop[1] : 0;
    var b0 = hasBackdrop ? backdrop[2] : 0;
    var composeFn;
    if (subtype === 'Luminosity') {
      composeFn = composeSMaskLuminosity;
    } else {
      composeFn = composeSMaskAlpha;
    }
    var PIXELS_TO_PROCESS = 1048576;
    var chunkSize = Math.min(height, Math.ceil(PIXELS_TO_PROCESS / width));
    for (var row = 0; row < height; row += chunkSize) {
      var chunkHeight = Math.min(chunkSize, height - row);
      var maskData = maskCtx.getImageData(0, row, width, chunkHeight);
      var layerData = layerCtx.getImageData(0, row, width, chunkHeight);
      if (hasBackdrop) {
        composeSMaskBackdrop(maskData.data, r0, g0, b0);
      }
      composeFn(maskData.data, layerData.data, transferMap);
      maskCtx.putImageData(layerData, 0, row);
    }
  }
  function composeSMask(ctx, smask, layerCtx, webGLContext) {
    var mask = smask.canvas;
    var maskCtx = smask.context;
    ctx.setTransform(smask.scaleX, 0, 0, smask.scaleY, smask.offsetX, smask.offsetY);
    var backdrop = smask.backdrop || null;
    if (!smask.transferMap && webGLContext.isEnabled) {
      let composed = webGLContext.composeSMask({
        layer: layerCtx.canvas,
        mask,
        properties: {
          subtype: smask.subtype,
          backdrop
        }
      });
      ctx.setTransform(1, 0, 0, 1, 0, 0);
      ctx.drawImage(composed, smask.offsetX, smask.offsetY);
      return;
    }
    genericComposeSMask(maskCtx, layerCtx, mask.width, mask.height, smask.subtype, backdrop, smask.transferMap);
    ctx.drawImage(mask, 0, 0);
  }
  var LINE_CAP_STYLES = ['butt', 'round', 'square'];
  var LINE_JOIN_STYLES = ['miter', 'round', 'bevel'];
  var NORMAL_CLIP = {};
  var EO_CLIP = {};
  CanvasGraphics.prototype = {
    beginDrawing({ transform, viewport, transparency, background = null }) {
      var width = this.ctx.canvas.width;
      var height = this.ctx.canvas.height;
      this.ctx.save();
      this.ctx.fillStyle = background || 'rgb(255, 255, 255)';
      this.ctx.fillRect(0, 0, width, height);
      this.ctx.restore();
      if (transparency) {
        var transparentCanvas = this.cachedCanvases.getCanvas('transparent', width, height, true);
        this.compositeCtx = this.ctx;
        this.transparentCanvas = transparentCanvas.canvas;
        this.ctx = transparentCanvas.context;
        this.ctx.save();
        this.ctx.transform.apply(this.ctx, this.compositeCtx.mozCurrentTransform);
      }
      this.ctx.save();
      resetCtxToDefault(this.ctx);
      if (transform) {
        this.ctx.transform.apply(this.ctx, transform);
      }
      this.ctx.transform.apply(this.ctx, viewport.transform);
      this.baseTransform = this.ctx.mozCurrentTransform.slice();
      if (this.imageLayer) {
        this.imageLayer.beginLayout();
      }
    },
    executeOperatorList: function CanvasGraphics_executeOperatorList(operatorList, executionStartIdx, continueCallback, stepper) {
      var argsArray = operatorList.argsArray;
      var fnArray = operatorList.fnArray;
      var i = executionStartIdx || 0;
      var argsArrayLen = argsArray.length;
      if (argsArrayLen === i) {
        return i;
      }
      var chunkOperations = argsArrayLen - i > EXECUTION_STEPS && typeof continueCallback === 'function';
      var endTime = chunkOperations ? Date.now() + EXECUTION_TIME : 0;
      var steps = 0;
      var commonObjs = this.commonObjs;
      var objs = this.objs;
      var fnId;
      while (true) {
        if (stepper !== undefined && i === stepper.nextBreakPoint) {
          stepper.breakIt(i, continueCallback);
          return i;
        }
        fnId = fnArray[i];
        if (fnId !== _util.OPS.dependency) {
          this[fnId].apply(this, argsArray[i]);
        } else {
          var deps = argsArray[i];
          for (var n = 0, nn = deps.length; n < nn; n++) {
            var depObjId = deps[n];
            var common = depObjId[0] === 'g' && depObjId[1] === '_';
            var objsPool = common ? commonObjs : objs;
            if (!objsPool.isResolved(depObjId)) {
              objsPool.get(depObjId, continueCallback);
              return i;
            }
          }
        }
        i++;
        if (i === argsArrayLen) {
          return i;
        }
        if (chunkOperations && ++steps > EXECUTION_STEPS) {
          if (Date.now() > endTime) {
            continueCallback();
            return i;
          }
          steps = 0;
        }
      }
    },
    endDrawing: function CanvasGraphics_endDrawing() {
      if (this.current.activeSMask !== null) {
        this.endSMaskGroup();
      }
      this.ctx.restore();
      if (this.transparentCanvas) {
        this.ctx = this.compositeCtx;
        this.ctx.save();
        this.ctx.setTransform(1, 0, 0, 1, 0, 0);
        this.ctx.drawImage(this.transparentCanvas, 0, 0);
        this.ctx.restore();
        this.transparentCanvas = null;
      }
      this.cachedCanvases.clear();
      this.webGLContext.clear();
      if (this.imageLayer) {
        this.imageLayer.endLayout();
      }
    },
    setLineWidth: function CanvasGraphics_setLineWidth(width) {
      this.current.lineWidth = width;
      this.ctx.lineWidth = width;
    },
    setLineCap: function CanvasGraphics_setLineCap(style) {
      this.ctx.lineCap = LINE_CAP_STYLES[style];
    },
    setLineJoin: function CanvasGraphics_setLineJoin(style) {
      this.ctx.lineJoin = LINE_JOIN_STYLES[style];
    },
    setMiterLimit: function CanvasGraphics_setMiterLimit(limit) {
      this.ctx.miterLimit = limit;
    },
    setDash: function CanvasGraphics_setDash(dashArray, dashPhase) {
      var ctx = this.ctx;
      if (ctx.setLineDash !== undefined) {
        ctx.setLineDash(dashArray);
        ctx.lineDashOffset = dashPhase;
      }
    },
    setRenderingIntent: function CanvasGraphics_setRenderingIntent(intent) {},
    setFlatness: function CanvasGraphics_setFlatness(flatness) {},
    setGState: function CanvasGraphics_setGState(states) {
      for (var i = 0, ii = states.length; i < ii; i++) {
        var state = states[i];
        var key = state[0];
        var value = state[1];
        switch (key) {
          case 'LW':
            this.setLineWidth(value);
            break;
          case 'LC':
            this.setLineCap(value);
            break;
          case 'LJ':
            this.setLineJoin(value);
            break;
          case 'ML':
            this.setMiterLimit(value);
            break;
          case 'D':
            this.setDash(value[0], value[1]);
            break;
          case 'RI':
            this.setRenderingIntent(value);
            break;
          case 'FL':
            this.setFlatness(value);
            break;
          case 'Font':
            this.setFont(value[0], value[1]);
            break;
          case 'CA':
            this.current.strokeAlpha = state[1];
            break;
          case 'ca':
            this.current.fillAlpha = state[1];
            this.ctx.globalAlpha = state[1];
            break;
          case 'BM':
            this.ctx.globalCompositeOperation = value;
            break;
          case 'SMask':
            if (this.current.activeSMask) {
              if (this.stateStack.length > 0 && this.stateStack[this.stateStack.length - 1].activeSMask === this.current.activeSMask) {
                this.suspendSMaskGroup();
              } else {
                this.endSMaskGroup();
              }
            }
            this.current.activeSMask = value ? this.tempSMask : null;
            if (this.current.activeSMask) {
              this.beginSMaskGroup();
            }
            this.tempSMask = null;
            break;
        }
      }
    },
    beginSMaskGroup: function CanvasGraphics_beginSMaskGroup() {
      var activeSMask = this.current.activeSMask;
      var drawnWidth = activeSMask.canvas.width;
      var drawnHeight = activeSMask.canvas.height;
      var cacheId = 'smaskGroupAt' + this.groupLevel;
      var scratchCanvas = this.cachedCanvases.getCanvas(cacheId, drawnWidth, drawnHeight, true);
      var currentCtx = this.ctx;
      var currentTransform = currentCtx.mozCurrentTransform;
      this.ctx.save();
      var groupCtx = scratchCanvas.context;
      groupCtx.scale(1 / activeSMask.scaleX, 1 / activeSMask.scaleY);
      groupCtx.translate(-activeSMask.offsetX, -activeSMask.offsetY);
      groupCtx.transform.apply(groupCtx, currentTransform);
      activeSMask.startTransformInverse = groupCtx.mozCurrentTransformInverse;
      copyCtxState(currentCtx, groupCtx);
      this.ctx = groupCtx;
      this.setGState([['BM', 'source-over'], ['ca', 1], ['CA', 1]]);
      this.groupStack.push(currentCtx);
      this.groupLevel++;
    },
    suspendSMaskGroup: function CanvasGraphics_endSMaskGroup() {
      var groupCtx = this.ctx;
      this.groupLevel--;
      this.ctx = this.groupStack.pop();
      composeSMask(this.ctx, this.current.activeSMask, groupCtx, this.webGLContext);
      this.ctx.restore();
      this.ctx.save();
      copyCtxState(groupCtx, this.ctx);
      this.current.resumeSMaskCtx = groupCtx;
      var deltaTransform = _util.Util.transform(this.current.activeSMask.startTransformInverse, groupCtx.mozCurrentTransform);
      this.ctx.transform.apply(this.ctx, deltaTransform);
      groupCtx.save();
      groupCtx.setTransform(1, 0, 0, 1, 0, 0);
      groupCtx.clearRect(0, 0, groupCtx.canvas.width, groupCtx.canvas.height);
      groupCtx.restore();
    },
    resumeSMaskGroup: function CanvasGraphics_endSMaskGroup() {
      var groupCtx = this.current.resumeSMaskCtx;
      var currentCtx = this.ctx;
      this.ctx = groupCtx;
      this.groupStack.push(currentCtx);
      this.groupLevel++;
    },
    endSMaskGroup: function CanvasGraphics_endSMaskGroup() {
      var groupCtx = this.ctx;
      this.groupLevel--;
      this.ctx = this.groupStack.pop();
      composeSMask(this.ctx, this.current.activeSMask, groupCtx, this.webGLContext);
      this.ctx.restore();
      copyCtxState(groupCtx, this.ctx);
      var deltaTransform = _util.Util.transform(this.current.activeSMask.startTransformInverse, groupCtx.mozCurrentTransform);
      this.ctx.transform.apply(this.ctx, deltaTransform);
    },
    save: function CanvasGraphics_save() {
      this.ctx.save();
      var old = this.current;
      this.stateStack.push(old);
      this.current = old.clone();
      this.current.resumeSMaskCtx = null;
    },
    restore: function CanvasGraphics_restore() {
      if (this.current.resumeSMaskCtx) {
        this.resumeSMaskGroup();
      }
      if (this.current.activeSMask !== null && (this.stateStack.length === 0 || this.stateStack[this.stateStack.length - 1].activeSMask !== this.current.activeSMask)) {
        this.endSMaskGroup();
      }
      if (this.stateStack.length !== 0) {
        this.current = this.stateStack.pop();
        this.ctx.restore();
        this.pendingClip = null;
        this.cachedGetSinglePixelWidth = null;
      }
    },
    transform: function CanvasGraphics_transform(a, b, c, d, e, f) {
      this.ctx.transform(a, b, c, d, e, f);
      this.cachedGetSinglePixelWidth = null;
    },
    constructPath: function CanvasGraphics_constructPath(ops, args) {
      var ctx = this.ctx;
      var current = this.current;
      var x = current.x,
          y = current.y;
      for (var i = 0, j = 0, ii = ops.length; i < ii; i++) {
        switch (ops[i] | 0) {
          case _util.OPS.rectangle:
            x = args[j++];
            y = args[j++];
            var width = args[j++];
            var height = args[j++];
            if (width === 0) {
              width = this.getSinglePixelWidth();
            }
            if (height === 0) {
              height = this.getSinglePixelWidth();
            }
            var xw = x + width;
            var yh = y + height;
            this.ctx.moveTo(x, y);
            this.ctx.lineTo(xw, y);
            this.ctx.lineTo(xw, yh);
            this.ctx.lineTo(x, yh);
            this.ctx.lineTo(x, y);
            this.ctx.closePath();
            break;
          case _util.OPS.moveTo:
            x = args[j++];
            y = args[j++];
            ctx.moveTo(x, y);
            break;
          case _util.OPS.lineTo:
            x = args[j++];
            y = args[j++];
            ctx.lineTo(x, y);
            break;
          case _util.OPS.curveTo:
            x = args[j + 4];
            y = args[j + 5];
            ctx.bezierCurveTo(args[j], args[j + 1], args[j + 2], args[j + 3], x, y);
            j += 6;
            break;
          case _util.OPS.curveTo2:
            ctx.bezierCurveTo(x, y, args[j], args[j + 1], args[j + 2], args[j + 3]);
            x = args[j + 2];
            y = args[j + 3];
            j += 4;
            break;
          case _util.OPS.curveTo3:
            x = args[j + 2];
            y = args[j + 3];
            ctx.bezierCurveTo(args[j], args[j + 1], x, y, x, y);
            j += 4;
            break;
          case _util.OPS.closePath:
            ctx.closePath();
            break;
        }
      }
      current.setCurrentPoint(x, y);
    },
    closePath: function CanvasGraphics_closePath() {
      this.ctx.closePath();
    },
    stroke: function CanvasGraphics_stroke(consumePath) {
      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
      var ctx = this.ctx;
      var strokeColor = this.current.strokeColor;
      ctx.lineWidth = Math.max(this.getSinglePixelWidth() * MIN_WIDTH_FACTOR, this.current.lineWidth);
      ctx.globalAlpha = this.current.strokeAlpha;
      if (strokeColor && strokeColor.hasOwnProperty('type') && strokeColor.type === 'Pattern') {
        ctx.save();
        ctx.strokeStyle = strokeColor.getPattern(ctx, this);
        ctx.stroke();
        ctx.restore();
      } else {
        ctx.stroke();
      }
      if (consumePath) {
        this.consumePath();
      }
      ctx.globalAlpha = this.current.fillAlpha;
    },
    closeStroke: function CanvasGraphics_closeStroke() {
      this.closePath();
      this.stroke();
    },
    fill: function CanvasGraphics_fill(consumePath) {
      consumePath = typeof consumePath !== 'undefined' ? consumePath : true;
      var ctx = this.ctx;
      var fillColor = this.current.fillColor;
      var isPatternFill = this.current.patternFill;
      var needRestore = false;
      if (isPatternFill) {
        ctx.save();
        if (this.baseTransform) {
          ctx.setTransform.apply(ctx, this.baseTransform);
        }
        ctx.fillStyle = fillColor.getPattern(ctx, this);
        needRestore = true;
      }
      if (this.pendingEOFill) {
        ctx.fill('evenodd');
        this.pendingEOFill = false;
      } else {
        ctx.fill();
      }
      if (needRestore) {
        ctx.restore();
      }
      if (consumePath) {
        this.consumePath();
      }
    },
    eoFill: function CanvasGraphics_eoFill() {
      this.pendingEOFill = true;
      this.fill();
    },
    fillStroke: function CanvasGraphics_fillStroke() {
      this.fill(false);
      this.stroke(false);
      this.consumePath();
    },
    eoFillStroke: function CanvasGraphics_eoFillStroke() {
      this.pendingEOFill = true;
      this.fillStroke();
    },
    closeFillStroke: function CanvasGraphics_closeFillStroke() {
      this.closePath();
      this.fillStroke();
    },
    closeEOFillStroke: function CanvasGraphics_closeEOFillStroke() {
      this.pendingEOFill = true;
      this.closePath();
      this.fillStroke();
    },
    endPath: function CanvasGraphics_endPath() {
      this.consumePath();
    },
    clip: function CanvasGraphics_clip() {
      this.pendingClip = NORMAL_CLIP;
    },
    eoClip: function CanvasGraphics_eoClip() {
      this.pendingClip = EO_CLIP;
    },
    beginText: function CanvasGraphics_beginText() {
      this.current.textMatrix = _util.IDENTITY_MATRIX;
      this.current.textMatrixScale = 1;
      this.current.x = this.current.lineX = 0;
      this.current.y = this.current.lineY = 0;
    },
    endText: function CanvasGraphics_endText() {
      var paths = this.pendingTextPaths;
      var ctx = this.ctx;
      if (paths === undefined) {
        ctx.beginPath();
        return;
      }
      ctx.save();
      ctx.beginPath();
      for (var i = 0; i < paths.length; i++) {
        var path = paths[i];
        ctx.setTransform.apply(ctx, path.transform);
        ctx.translate(path.x, path.y);
        path.addToPath(ctx, path.fontSize);
      }
      ctx.restore();
      ctx.clip();
      ctx.beginPath();
      delete this.pendingTextPaths;
    },
    setCharSpacing: function CanvasGraphics_setCharSpacing(spacing) {
      this.current.charSpacing = spacing;
    },
    setWordSpacing: function CanvasGraphics_setWordSpacing(spacing) {
      this.current.wordSpacing = spacing;
    },
    setHScale: function CanvasGraphics_setHScale(scale) {
      this.current.textHScale = scale / 100;
    },
    setLeading: function CanvasGraphics_setLeading(leading) {
      this.current.leading = -leading;
    },
    setFont: function CanvasGraphics_setFont(fontRefName, size) {
      var fontObj = this.commonObjs.get(fontRefName);
      var current = this.current;
      if (!fontObj) {
        throw new Error(`Can't find font for ${fontRefName}`);
      }
      current.fontMatrix = fontObj.fontMatrix ? fontObj.fontMatrix : _util.FONT_IDENTITY_MATRIX;
      if (current.fontMatrix[0] === 0 || current.fontMatrix[3] === 0) {
        (0, _util.warn)('Invalid font matrix for font ' + fontRefName);
      }
      if (size < 0) {
        size = -size;
        current.fontDirection = -1;
      } else {
        current.fontDirection = 1;
      }
      this.current.font = fontObj;
      this.current.fontSize = size;
      if (fontObj.isType3Font) {
        return;
      }
      var name = fontObj.loadedName || 'sans-serif';
      var bold = fontObj.black ? '900' : fontObj.bold ? 'bold' : 'normal';
      var italic = fontObj.italic ? 'italic' : 'normal';
      var typeface = '"' + name + '", ' + fontObj.fallbackName;
      var browserFontSize = size < MIN_FONT_SIZE ? MIN_FONT_SIZE : size > MAX_FONT_SIZE ? MAX_FONT_SIZE : size;
      this.current.fontSizeScale = size / browserFontSize;
      var rule = italic + ' ' + bold + ' ' + browserFontSize + 'px ' + typeface;
      this.ctx.font = rule;
    },
    setTextRenderingMode: function CanvasGraphics_setTextRenderingMode(mode) {
      this.current.textRenderingMode = mode;
    },
    setTextRise: function CanvasGraphics_setTextRise(rise) {
      this.current.textRise = rise;
    },
    moveText: function CanvasGraphics_moveText(x, y) {
      this.current.x = this.current.lineX += x;
      this.current.y = this.current.lineY += y;
    },
    setLeadingMoveText: function CanvasGraphics_setLeadingMoveText(x, y) {
      this.setLeading(-y);
      this.moveText(x, y);
    },
    setTextMatrix: function CanvasGraphics_setTextMatrix(a, b, c, d, e, f) {
      this.current.textMatrix = [a, b, c, d, e, f];
      this.current.textMatrixScale = Math.sqrt(a * a + b * b);
      this.current.x = this.current.lineX = 0;
      this.current.y = this.current.lineY = 0;
    },
    nextLine: function CanvasGraphics_nextLine() {
      this.moveText(0, this.current.leading);
    },
    paintChar(character, x, y, patternTransform) {
      var ctx = this.ctx;
      var current = this.current;
      var font = current.font;
      var textRenderingMode = current.textRenderingMode;
      var fontSize = current.fontSize / current.fontSizeScale;
      var fillStrokeMode = textRenderingMode & _util.TextRenderingMode.FILL_STROKE_MASK;
      var isAddToPathSet = !!(textRenderingMode & _util.TextRenderingMode.ADD_TO_PATH_FLAG);
      let patternFill = current.patternFill && font.data;
      var addToPath;
      if (font.disableFontFace || isAddToPathSet || patternFill) {
        addToPath = font.getPathGenerator(this.commonObjs, character);
      }
      if (font.disableFontFace || patternFill) {
        ctx.save();
        ctx.translate(x, y);
        ctx.beginPath();
        addToPath(ctx, fontSize);
        if (patternTransform) {
          ctx.setTransform.apply(ctx, patternTransform);
        }
        if (fillStrokeMode === _util.TextRenderingMode.FILL || fillStrokeMode === _util.TextRenderingMode.FILL_STROKE) {
          ctx.fill();
        }
        if (fillStrokeMode === _util.TextRenderingMode.STROKE || fillStrokeMode === _util.TextRenderingMode.FILL_STROKE) {
          ctx.stroke();
        }
        ctx.restore();
      } else {
        if (fillStrokeMode === _util.TextRenderingMode.FILL || fillStrokeMode === _util.TextRenderingMode.FILL_STROKE) {
          ctx.fillText(character, x, y);
        }
        if (fillStrokeMode === _util.TextRenderingMode.STROKE || fillStrokeMode === _util.TextRenderingMode.FILL_STROKE) {
          ctx.strokeText(character, x, y);
        }
      }
      if (isAddToPathSet) {
        var paths = this.pendingTextPaths || (this.pendingTextPaths = []);
        paths.push({
          transform: ctx.mozCurrentTransform,
          x,
          y,
          fontSize,
          addToPath
        });
      }
    },
    get isFontSubpixelAAEnabled() {
      var ctx = this.canvasFactory.create(10, 10).context;
      ctx.scale(1.5, 1);
      ctx.fillText('I', 0, 10);
      var data = ctx.getImageData(0, 0, 10, 10).data;
      var enabled = false;
      for (var i = 3; i < data.length; i += 4) {
        if (data[i] > 0 && data[i] < 255) {
          enabled = true;
          break;
        }
      }
      return (0, _util.shadow)(this, 'isFontSubpixelAAEnabled', enabled);
    },
    showText: function CanvasGraphics_showText(glyphs) {
      var current = this.current;
      var font = current.font;
      if (font.isType3Font) {
        return this.showType3Text(glyphs);
      }
      var fontSize = current.fontSize;
      if (fontSize === 0) {
        return;
      }
      var ctx = this.ctx;
      var fontSizeScale = current.fontSizeScale;
      var charSpacing = current.charSpacing;
      var wordSpacing = current.wordSpacing;
      var fontDirection = current.fontDirection;
      var textHScale = current.textHScale * fontDirection;
      var glyphsLength = glyphs.length;
      var vertical = font.vertical;
      var spacingDir = vertical ? 1 : -1;
      var defaultVMetrics = font.defaultVMetrics;
      var widthAdvanceScale = fontSize * current.fontMatrix[0];
      var simpleFillText = current.textRenderingMode === _util.TextRenderingMode.FILL && !font.disableFontFace && !current.patternFill;
      ctx.save();
      let patternTransform;
      if (current.patternFill) {
        ctx.save();
        let pattern = current.fillColor.getPattern(ctx, this);
        patternTransform = ctx.mozCurrentTransform;
        ctx.restore();
        ctx.fillStyle = pattern;
      }
      ctx.transform.apply(ctx, current.textMatrix);
      ctx.translate(current.x, current.y + current.textRise);
      if (fontDirection > 0) {
        ctx.scale(textHScale, -1);
      } else {
        ctx.scale(textHScale, 1);
      }
      var lineWidth = current.lineWidth;
      var scale = current.textMatrixScale;
      if (scale === 0 || lineWidth === 0) {
        var fillStrokeMode = current.textRenderingMode & _util.TextRenderingMode.FILL_STROKE_MASK;
        if (fillStrokeMode === _util.TextRenderingMode.STROKE || fillStrokeMode === _util.TextRenderingMode.FILL_STROKE) {
          this.cachedGetSinglePixelWidth = null;
          lineWidth = this.getSinglePixelWidth() * MIN_WIDTH_FACTOR;
        }
      } else {
        lineWidth /= scale;
      }
      if (fontSizeScale !== 1.0) {
        ctx.scale(fontSizeScale, fontSizeScale);
        lineWidth /= fontSizeScale;
      }
      ctx.lineWidth = lineWidth;
      var x = 0,
          i;
      for (i = 0; i < glyphsLength; ++i) {
        var glyph = glyphs[i];
        if ((0, _util.isNum)(glyph)) {
          x += spacingDir * glyph * fontSize / 1000;
          continue;
        }
        var restoreNeeded = false;
        var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
        var character = glyph.fontChar;
        var accent = glyph.accent;
        var scaledX, scaledY, scaledAccentX, scaledAccentY;
        var width = glyph.width;
        if (vertical) {
          var vmetric, vx, vy;
          vmetric = glyph.vmetric || defaultVMetrics;
          vx = glyph.vmetric ? vmetric[1] : width * 0.5;
          vx = -vx * widthAdvanceScale;
          vy = vmetric[2] * widthAdvanceScale;
          width = vmetric ? -vmetric[0] : width;
          scaledX = vx / fontSizeScale;
          scaledY = (x + vy) / fontSizeScale;
        } else {
          scaledX = x / fontSizeScale;
          scaledY = 0;
        }
        if (font.remeasure && width > 0) {
          var measuredWidth = ctx.measureText(character).width * 1000 / fontSize * fontSizeScale;
          if (width < measuredWidth && this.isFontSubpixelAAEnabled) {
            var characterScaleX = width / measuredWidth;
            restoreNeeded = true;
            ctx.save();
            ctx.scale(characterScaleX, 1);
            scaledX /= characterScaleX;
          } else if (width !== measuredWidth) {
            scaledX += (width - measuredWidth) / 2000 * fontSize / fontSizeScale;
          }
        }
        if (glyph.isInFont || font.missingFile) {
          if (simpleFillText && !accent) {
            ctx.fillText(character, scaledX, scaledY);
          } else {
            this.paintChar(character, scaledX, scaledY, patternTransform);
            if (accent) {
              scaledAccentX = scaledX + accent.offset.x / fontSizeScale;
              scaledAccentY = scaledY - accent.offset.y / fontSizeScale;
              this.paintChar(accent.fontChar, scaledAccentX, scaledAccentY, patternTransform);
            }
          }
        }
        var charWidth = width * widthAdvanceScale + spacing * fontDirection;
        x += charWidth;
        if (restoreNeeded) {
          ctx.restore();
        }
      }
      if (vertical) {
        current.y -= x * textHScale;
      } else {
        current.x += x * textHScale;
      }
      ctx.restore();
    },
    showType3Text: function CanvasGraphics_showType3Text(glyphs) {
      var ctx = this.ctx;
      var current = this.current;
      var font = current.font;
      var fontSize = current.fontSize;
      var fontDirection = current.fontDirection;
      var spacingDir = font.vertical ? 1 : -1;
      var charSpacing = current.charSpacing;
      var wordSpacing = current.wordSpacing;
      var textHScale = current.textHScale * fontDirection;
      var fontMatrix = current.fontMatrix || _util.FONT_IDENTITY_MATRIX;
      var glyphsLength = glyphs.length;
      var isTextInvisible = current.textRenderingMode === _util.TextRenderingMode.INVISIBLE;
      var i, glyph, width, spacingLength;
      if (isTextInvisible || fontSize === 0) {
        return;
      }
      this.cachedGetSinglePixelWidth = null;
      ctx.save();
      ctx.transform.apply(ctx, current.textMatrix);
      ctx.translate(current.x, current.y);
      ctx.scale(textHScale, fontDirection);
      for (i = 0; i < glyphsLength; ++i) {
        glyph = glyphs[i];
        if ((0, _util.isNum)(glyph)) {
          spacingLength = spacingDir * glyph * fontSize / 1000;
          this.ctx.translate(spacingLength, 0);
          current.x += spacingLength * textHScale;
          continue;
        }
        var spacing = (glyph.isSpace ? wordSpacing : 0) + charSpacing;
        var operatorList = font.charProcOperatorList[glyph.operatorListId];
        if (!operatorList) {
          (0, _util.warn)(`Type3 character "${glyph.operatorListId}" is not available.`);
          continue;
        }
        this.processingType3 = glyph;
        this.save();
        ctx.scale(fontSize, fontSize);
        ctx.transform.apply(ctx, fontMatrix);
        this.executeOperatorList(operatorList);
        this.restore();
        var transformed = _util.Util.applyTransform([glyph.width, 0], fontMatrix);
        width = transformed[0] * fontSize + spacing;
        ctx.translate(width, 0);
        current.x += width * textHScale;
      }
      ctx.restore();
      this.processingType3 = null;
    },
    setCharWidth: function CanvasGraphics_setCharWidth(xWidth, yWidth) {},
    setCharWidthAndBounds: function CanvasGraphics_setCharWidthAndBounds(xWidth, yWidth, llx, lly, urx, ury) {
      this.ctx.rect(llx, lly, urx - llx, ury - lly);
      this.clip();
      this.endPath();
    },
    getColorN_Pattern: function CanvasGraphics_getColorN_Pattern(IR) {
      var pattern;
      if (IR[0] === 'TilingPattern') {
        var color = IR[1];
        var baseTransform = this.baseTransform || this.ctx.mozCurrentTransform.slice();
        var canvasGraphicsFactory = {
          createCanvasGraphics: ctx => {
            return new CanvasGraphics(ctx, this.commonObjs, this.objs, this.canvasFactory, this.webGLContext);
          }
        };
        pattern = new _pattern_helper.TilingPattern(IR, color, this.ctx, canvasGraphicsFactory, baseTransform);
      } else {
        pattern = (0, _pattern_helper.getShadingPatternFromIR)(IR);
      }
      return pattern;
    },
    setStrokeColorN: function CanvasGraphics_setStrokeColorN() {
      this.current.strokeColor = this.getColorN_Pattern(arguments);
    },
    setFillColorN: function CanvasGraphics_setFillColorN() {
      this.current.fillColor = this.getColorN_Pattern(arguments);
      this.current.patternFill = true;
    },
    setStrokeRGBColor: function CanvasGraphics_setStrokeRGBColor(r, g, b) {
      var color = _util.Util.makeCssRgb(r, g, b);
      this.ctx.strokeStyle = color;
      this.current.strokeColor = color;
    },
    setFillRGBColor: function CanvasGraphics_setFillRGBColor(r, g, b) {
      var color = _util.Util.makeCssRgb(r, g, b);
      this.ctx.fillStyle = color;
      this.current.fillColor = color;
      this.current.patternFill = false;
    },
    shadingFill: function CanvasGraphics_shadingFill(patternIR) {
      var ctx = this.ctx;
      this.save();
      var pattern = (0, _pattern_helper.getShadingPatternFromIR)(patternIR);
      ctx.fillStyle = pattern.getPattern(ctx, this, true);
      var inv = ctx.mozCurrentTransformInverse;
      if (inv) {
        var canvas = ctx.canvas;
        var width = canvas.width;
        var height = canvas.height;
        var bl = _util.Util.applyTransform([0, 0], inv);
        var br = _util.Util.applyTransform([0, height], inv);
        var ul = _util.Util.applyTransform([width, 0], inv);
        var ur = _util.Util.applyTransform([width, height], inv);
        var x0 = Math.min(bl[0], br[0], ul[0], ur[0]);
        var y0 = Math.min(bl[1], br[1], ul[1], ur[1]);
        var x1 = Math.max(bl[0], br[0], ul[0], ur[0]);
        var y1 = Math.max(bl[1], br[1], ul[1], ur[1]);
        this.ctx.fillRect(x0, y0, x1 - x0, y1 - y0);
      } else {
        this.ctx.fillRect(-1e10, -1e10, 2e10, 2e10);
      }
      this.restore();
    },
    beginInlineImage: function CanvasGraphics_beginInlineImage() {
      (0, _util.unreachable)('Should not call beginInlineImage');
    },
    beginImageData: function CanvasGraphics_beginImageData() {
      (0, _util.unreachable)('Should not call beginImageData');
    },
    paintFormXObjectBegin: function CanvasGraphics_paintFormXObjectBegin(matrix, bbox) {
      this.save();
      this.baseTransformStack.push(this.baseTransform);
      if (Array.isArray(matrix) && matrix.length === 6) {
        this.transform.apply(this, matrix);
      }
      this.baseTransform = this.ctx.mozCurrentTransform;
      if (Array.isArray(bbox) && bbox.length === 4) {
        var width = bbox[2] - bbox[0];
        var height = bbox[3] - bbox[1];
        this.ctx.rect(bbox[0], bbox[1], width, height);
        this.clip();
        this.endPath();
      }
    },
    paintFormXObjectEnd: function CanvasGraphics_paintFormXObjectEnd() {
      this.restore();
      this.baseTransform = this.baseTransformStack.pop();
    },
    beginGroup: function CanvasGraphics_beginGroup(group) {
      this.save();
      var currentCtx = this.ctx;
      if (!group.isolated) {
        (0, _util.info)('TODO: Support non-isolated groups.');
      }
      if (group.knockout) {
        (0, _util.warn)('Knockout groups not supported.');
      }
      var currentTransform = currentCtx.mozCurrentTransform;
      if (group.matrix) {
        currentCtx.transform.apply(currentCtx, group.matrix);
      }
      if (!group.bbox) {
        throw new Error('Bounding box is required.');
      }
      var bounds = _util.Util.getAxialAlignedBoundingBox(group.bbox, currentCtx.mozCurrentTransform);
      var canvasBounds = [0, 0, currentCtx.canvas.width, currentCtx.canvas.height];
      bounds = _util.Util.intersect(bounds, canvasBounds) || [0, 0, 0, 0];
      var offsetX = Math.floor(bounds[0]);
      var offsetY = Math.floor(bounds[1]);
      var drawnWidth = Math.max(Math.ceil(bounds[2]) - offsetX, 1);
      var drawnHeight = Math.max(Math.ceil(bounds[3]) - offsetY, 1);
      var scaleX = 1,
          scaleY = 1;
      if (drawnWidth > MAX_GROUP_SIZE) {
        scaleX = drawnWidth / MAX_GROUP_SIZE;
        drawnWidth = MAX_GROUP_SIZE;
      }
      if (drawnHeight > MAX_GROUP_SIZE) {
        scaleY = drawnHeight / MAX_GROUP_SIZE;
        drawnHeight = MAX_GROUP_SIZE;
      }
      var cacheId = 'groupAt' + this.groupLevel;
      if (group.smask) {
        cacheId += '_smask_' + this.smaskCounter++ % 2;
      }
      var scratchCanvas = this.cachedCanvases.getCanvas(cacheId, drawnWidth, drawnHeight, true);
      var groupCtx = scratchCanvas.context;
      groupCtx.scale(1 / scaleX, 1 / scaleY);
      groupCtx.translate(-offsetX, -offsetY);
      groupCtx.transform.apply(groupCtx, currentTransform);
      if (group.smask) {
        this.smaskStack.push({
          canvas: scratchCanvas.canvas,
          context: groupCtx,
          offsetX,
          offsetY,
          scaleX,
          scaleY,
          subtype: group.smask.subtype,
          backdrop: group.smask.backdrop,
          transferMap: group.smask.transferMap || null,
          startTransformInverse: null
        });
      } else {
        currentCtx.setTransform(1, 0, 0, 1, 0, 0);
        currentCtx.translate(offsetX, offsetY);
        currentCtx.scale(scaleX, scaleY);
      }
      copyCtxState(currentCtx, groupCtx);
      this.ctx = groupCtx;
      this.setGState([['BM', 'source-over'], ['ca', 1], ['CA', 1]]);
      this.groupStack.push(currentCtx);
      this.groupLevel++;
      this.current.activeSMask = null;
    },
    endGroup: function CanvasGraphics_endGroup(group) {
      this.groupLevel--;
      var groupCtx = this.ctx;
      this.ctx = this.groupStack.pop();
      if (this.ctx.imageSmoothingEnabled !== undefined) {
        this.ctx.imageSmoothingEnabled = false;
      } else {
        this.ctx.mozImageSmoothingEnabled = false;
      }
      if (group.smask) {
        this.tempSMask = this.smaskStack.pop();
      } else {
        this.ctx.drawImage(groupCtx.canvas, 0, 0);
      }
      this.restore();
    },
    beginAnnotations: function CanvasGraphics_beginAnnotations() {
      this.save();
      if (this.baseTransform) {
        this.ctx.setTransform.apply(this.ctx, this.baseTransform);
      }
    },
    endAnnotations: function CanvasGraphics_endAnnotations() {
      this.restore();
    },
    beginAnnotation: function CanvasGraphics_beginAnnotation(rect, transform, matrix) {
      this.save();
      resetCtxToDefault(this.ctx);
      this.current = new CanvasExtraState();
      if (Array.isArray(rect) && rect.length === 4) {
        var width = rect[2] - rect[0];
        var height = rect[3] - rect[1];
        this.ctx.rect(rect[0], rect[1], width, height);
        this.clip();
        this.endPath();
      }
      this.transform.apply(this, transform);
      this.transform.apply(this, matrix);
    },
    endAnnotation: function CanvasGraphics_endAnnotation() {
      this.restore();
    },
    paintJpegXObject: function CanvasGraphics_paintJpegXObject(objId, w, h) {
      var domImage = this.objs.get(objId);
      if (!domImage) {
        (0, _util.warn)('Dependent image isn\'t ready yet');
        return;
      }
      this.save();
      var ctx = this.ctx;
      ctx.scale(1 / w, -1 / h);
      ctx.drawImage(domImage, 0, 0, domImage.width, domImage.height, 0, -h, w, h);
      if (this.imageLayer) {
        var currentTransform = ctx.mozCurrentTransformInverse;
        var position = this.getCanvasPosition(0, 0);
        this.imageLayer.appendImage({
          objId,
          left: position[0],
          top: position[1],
          width: w / currentTransform[0],
          height: h / currentTransform[3]
        });
      }
      this.restore();
    },
    paintImageMaskXObject: function CanvasGraphics_paintImageMaskXObject(img) {
      var ctx = this.ctx;
      var width = img.width,
          height = img.height;
      var fillColor = this.current.fillColor;
      var isPatternFill = this.current.patternFill;
      var glyph = this.processingType3;
      if (COMPILE_TYPE3_GLYPHS && glyph && glyph.compiled === undefined) {
        if (width <= MAX_SIZE_TO_COMPILE && height <= MAX_SIZE_TO_COMPILE) {
          glyph.compiled = compileType3Glyph({
            data: img.data,
            width,
            height
          });
        } else {
          glyph.compiled = null;
        }
      }
      if (glyph && glyph.compiled) {
        glyph.compiled(ctx);
        return;
      }
      var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height);
      var maskCtx = maskCanvas.context;
      maskCtx.save();
      putBinaryImageMask(maskCtx, img);
      maskCtx.globalCompositeOperation = 'source-in';
      maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor;
      maskCtx.fillRect(0, 0, width, height);
      maskCtx.restore();
      this.paintInlineImageXObject(maskCanvas.canvas);
    },
    paintImageMaskXObjectRepeat: function CanvasGraphics_paintImageMaskXObjectRepeat(imgData, scaleX, scaleY, positions) {
      var width = imgData.width;
      var height = imgData.height;
      var fillColor = this.current.fillColor;
      var isPatternFill = this.current.patternFill;
      var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height);
      var maskCtx = maskCanvas.context;
      maskCtx.save();
      putBinaryImageMask(maskCtx, imgData);
      maskCtx.globalCompositeOperation = 'source-in';
      maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor;
      maskCtx.fillRect(0, 0, width, height);
      maskCtx.restore();
      var ctx = this.ctx;
      for (var i = 0, ii = positions.length; i < ii; i += 2) {
        ctx.save();
        ctx.transform(scaleX, 0, 0, scaleY, positions[i], positions[i + 1]);
        ctx.scale(1, -1);
        ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1);
        ctx.restore();
      }
    },
    paintImageMaskXObjectGroup: function CanvasGraphics_paintImageMaskXObjectGroup(images) {
      var ctx = this.ctx;
      var fillColor = this.current.fillColor;
      var isPatternFill = this.current.patternFill;
      for (var i = 0, ii = images.length; i < ii; i++) {
        var image = images[i];
        var width = image.width,
            height = image.height;
        var maskCanvas = this.cachedCanvases.getCanvas('maskCanvas', width, height);
        var maskCtx = maskCanvas.context;
        maskCtx.save();
        putBinaryImageMask(maskCtx, image);
        maskCtx.globalCompositeOperation = 'source-in';
        maskCtx.fillStyle = isPatternFill ? fillColor.getPattern(maskCtx, this) : fillColor;
        maskCtx.fillRect(0, 0, width, height);
        maskCtx.restore();
        ctx.save();
        ctx.transform.apply(ctx, image.transform);
        ctx.scale(1, -1);
        ctx.drawImage(maskCanvas.canvas, 0, 0, width, height, 0, -1, 1, 1);
        ctx.restore();
      }
    },
    paintImageXObject: function CanvasGraphics_paintImageXObject(objId) {
      var imgData = this.objs.get(objId);
      if (!imgData) {
        (0, _util.warn)('Dependent image isn\'t ready yet');
        return;
      }
      this.paintInlineImageXObject(imgData);
    },
    paintImageXObjectRepeat: function CanvasGraphics_paintImageXObjectRepeat(objId, scaleX, scaleY, positions) {
      var imgData = this.objs.get(objId);
      if (!imgData) {
        (0, _util.warn)('Dependent image isn\'t ready yet');
        return;
      }
      var width = imgData.width;
      var height = imgData.height;
      var map = [];
      for (var i = 0, ii = positions.length; i < ii; i += 2) {
        map.push({
          transform: [scaleX, 0, 0, scaleY, positions[i], positions[i + 1]],
          x: 0,
          y: 0,
          w: width,
          h: height
        });
      }
      this.paintInlineImageXObjectGroup(imgData, map);
    },
    paintInlineImageXObject: function CanvasGraphics_paintInlineImageXObject(imgData) {
      var width = imgData.width;
      var height = imgData.height;
      var ctx = this.ctx;
      this.save();
      ctx.scale(1 / width, -1 / height);
      var currentTransform = ctx.mozCurrentTransformInverse;
      var a = currentTransform[0],
          b = currentTransform[1];
      var widthScale = Math.max(Math.sqrt(a * a + b * b), 1);
      var c = currentTransform[2],
          d = currentTransform[3];
      var heightScale = Math.max(Math.sqrt(c * c + d * d), 1);
      var imgToPaint, tmpCanvas;
      if (imgData instanceof HTMLElement || !imgData.data) {
        imgToPaint = imgData;
      } else {
        tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', width, height);
        var tmpCtx = tmpCanvas.context;
        putBinaryImageData(tmpCtx, imgData);
        imgToPaint = tmpCanvas.canvas;
      }
      var paintWidth = width,
          paintHeight = height;
      var tmpCanvasId = 'prescale1';
      while (widthScale > 2 && paintWidth > 1 || heightScale > 2 && paintHeight > 1) {
        var newWidth = paintWidth,
            newHeight = paintHeight;
        if (widthScale > 2 && paintWidth > 1) {
          newWidth = Math.ceil(paintWidth / 2);
          widthScale /= paintWidth / newWidth;
        }
        if (heightScale > 2 && paintHeight > 1) {
          newHeight = Math.ceil(paintHeight / 2);
          heightScale /= paintHeight / newHeight;
        }
        tmpCanvas = this.cachedCanvases.getCanvas(tmpCanvasId, newWidth, newHeight);
        tmpCtx = tmpCanvas.context;
        tmpCtx.clearRect(0, 0, newWidth, newHeight);
        tmpCtx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, 0, 0, newWidth, newHeight);
        imgToPaint = tmpCanvas.canvas;
        paintWidth = newWidth;
        paintHeight = newHeight;
        tmpCanvasId = tmpCanvasId === 'prescale1' ? 'prescale2' : 'prescale1';
      }
      ctx.drawImage(imgToPaint, 0, 0, paintWidth, paintHeight, 0, -height, width, height);
      if (this.imageLayer) {
        var position = this.getCanvasPosition(0, -height);
        this.imageLayer.appendImage({
          imgData,
          left: position[0],
          top: position[1],
          width: width / currentTransform[0],
          height: height / currentTransform[3]
        });
      }
      this.restore();
    },
    paintInlineImageXObjectGroup: function CanvasGraphics_paintInlineImageXObjectGroup(imgData, map) {
      var ctx = this.ctx;
      var w = imgData.width;
      var h = imgData.height;
      var tmpCanvas = this.cachedCanvases.getCanvas('inlineImage', w, h);
      var tmpCtx = tmpCanvas.context;
      putBinaryImageData(tmpCtx, imgData);
      for (var i = 0, ii = map.length; i < ii; i++) {
        var entry = map[i];
        ctx.save();
        ctx.transform.apply(ctx, entry.transform);
        ctx.scale(1, -1);
        ctx.drawImage(tmpCanvas.canvas, entry.x, entry.y, entry.w, entry.h, 0, -1, 1, 1);
        if (this.imageLayer) {
          var position = this.getCanvasPosition(entry.x, entry.y);
          this.imageLayer.appendImage({
            imgData,
            left: position[0],
            top: position[1],
            width: w,
            height: h
          });
        }
        ctx.restore();
      }
    },
    paintSolidColorImageMask: function CanvasGraphics_paintSolidColorImageMask() {
      this.ctx.fillRect(0, 0, 1, 1);
    },
    paintXObject: function CanvasGraphics_paintXObject() {
      (0, _util.warn)('Unsupported \'paintXObject\' command.');
    },
    markPoint: function CanvasGraphics_markPoint(tag) {},
    markPointProps: function CanvasGraphics_markPointProps(tag, properties) {},
    beginMarkedContent: function CanvasGraphics_beginMarkedContent(tag) {},
    beginMarkedContentProps: function CanvasGraphics_beginMarkedContentProps(tag, properties) {},
    endMarkedContent: function CanvasGraphics_endMarkedContent() {},
    beginCompat: function CanvasGraphics_beginCompat() {},
    endCompat: function CanvasGraphics_endCompat() {},
    consumePath: function CanvasGraphics_consumePath() {
      var ctx = this.ctx;
      if (this.pendingClip) {
        if (this.pendingClip === EO_CLIP) {
          ctx.clip('evenodd');
        } else {
          ctx.clip();
        }
        this.pendingClip = null;
      }
      ctx.beginPath();
    },
    getSinglePixelWidth: function CanvasGraphics_getSinglePixelWidth(scale) {
      if (this.cachedGetSinglePixelWidth === null) {
        this.ctx.save();
        var inverse = this.ctx.mozCurrentTransformInverse;
        this.ctx.restore();
        this.cachedGetSinglePixelWidth = Math.sqrt(Math.max(inverse[0] * inverse[0] + inverse[1] * inverse[1], inverse[2] * inverse[2] + inverse[3] * inverse[3]));
      }
      return this.cachedGetSinglePixelWidth;
    },
    getCanvasPosition: function CanvasGraphics_getCanvasPosition(x, y) {
      var transform = this.ctx.mozCurrentTransform;
      return [transform[0] * x + transform[2] * y + transform[4], transform[1] * x + transform[3] * y + transform[5]];
    }
  };
  for (var op in _util.OPS) {
    CanvasGraphics.prototype[_util.OPS[op]] = CanvasGraphics.prototype[op];
  }
  return CanvasGraphics;
}();
exports.CanvasGraphics = CanvasGraphics;

/***/ }),
/* 12 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.TilingPattern = exports.getShadingPatternFromIR = undefined;

var _util = __w_pdfjs_require__(0);

var ShadingIRs = {};
ShadingIRs.RadialAxial = {
  fromIR: function RadialAxial_fromIR(raw) {
    var type = raw[1];
    var colorStops = raw[2];
    var p0 = raw[3];
    var p1 = raw[4];
    var r0 = raw[5];
    var r1 = raw[6];
    return {
      type: 'Pattern',
      getPattern: function RadialAxial_getPattern(ctx) {
        var grad;
        if (type === 'axial') {
          grad = ctx.createLinearGradient(p0[0], p0[1], p1[0], p1[1]);
        } else if (type === 'radial') {
          grad = ctx.createRadialGradient(p0[0], p0[1], r0, p1[0], p1[1], r1);
        }
        for (var i = 0, ii = colorStops.length; i < ii; ++i) {
          var c = colorStops[i];
          grad.addColorStop(c[0], c[1]);
        }
        return grad;
      }
    };
  }
};
var createMeshCanvas = function createMeshCanvasClosure() {
  function drawTriangle(data, context, p1, p2, p3, c1, c2, c3) {
    var coords = context.coords,
        colors = context.colors;
    var bytes = data.data,
        rowSize = data.width * 4;
    var tmp;
    if (coords[p1 + 1] > coords[p2 + 1]) {
      tmp = p1;
      p1 = p2;
      p2 = tmp;
      tmp = c1;
      c1 = c2;
      c2 = tmp;
    }
    if (coords[p2 + 1] > coords[p3 + 1]) {
      tmp = p2;
      p2 = p3;
      p3 = tmp;
      tmp = c2;
      c2 = c3;
      c3 = tmp;
    }
    if (coords[p1 + 1] > coords[p2 + 1]) {
      tmp = p1;
      p1 = p2;
      p2 = tmp;
      tmp = c1;
      c1 = c2;
      c2 = tmp;
    }
    var x1 = (coords[p1] + context.offsetX) * context.scaleX;
    var y1 = (coords[p1 + 1] + context.offsetY) * context.scaleY;
    var x2 = (coords[p2] + context.offsetX) * context.scaleX;
    var y2 = (coords[p2 + 1] + context.offsetY) * context.scaleY;
    var x3 = (coords[p3] + context.offsetX) * context.scaleX;
    var y3 = (coords[p3 + 1] + context.offsetY) * context.scaleY;
    if (y1 >= y3) {
      return;
    }
    var c1r = colors[c1],
        c1g = colors[c1 + 1],
        c1b = colors[c1 + 2];
    var c2r = colors[c2],
        c2g = colors[c2 + 1],
        c2b = colors[c2 + 2];
    var c3r = colors[c3],
        c3g = colors[c3 + 1],
        c3b = colors[c3 + 2];
    var minY = Math.round(y1),
        maxY = Math.round(y3);
    var xa, car, cag, cab;
    var xb, cbr, cbg, cbb;
    var k;
    for (var y = minY; y <= maxY; y++) {
      if (y < y2) {
        k = y < y1 ? 0 : y1 === y2 ? 1 : (y1 - y) / (y1 - y2);
        xa = x1 - (x1 - x2) * k;
        car = c1r - (c1r - c2r) * k;
        cag = c1g - (c1g - c2g) * k;
        cab = c1b - (c1b - c2b) * k;
      } else {
        k = y > y3 ? 1 : y2 === y3 ? 0 : (y2 - y) / (y2 - y3);
        xa = x2 - (x2 - x3) * k;
        car = c2r - (c2r - c3r) * k;
        cag = c2g - (c2g - c3g) * k;
        cab = c2b - (c2b - c3b) * k;
      }
      k = y < y1 ? 0 : y > y3 ? 1 : (y1 - y) / (y1 - y3);
      xb = x1 - (x1 - x3) * k;
      cbr = c1r - (c1r - c3r) * k;
      cbg = c1g - (c1g - c3g) * k;
      cbb = c1b - (c1b - c3b) * k;
      var x1_ = Math.round(Math.min(xa, xb));
      var x2_ = Math.round(Math.max(xa, xb));
      var j = rowSize * y + x1_ * 4;
      for (var x = x1_; x <= x2_; x++) {
        k = (xa - x) / (xa - xb);
        k = k < 0 ? 0 : k > 1 ? 1 : k;
        bytes[j++] = car - (car - cbr) * k | 0;
        bytes[j++] = cag - (cag - cbg) * k | 0;
        bytes[j++] = cab - (cab - cbb) * k | 0;
        bytes[j++] = 255;
      }
    }
  }
  function drawFigure(data, figure, context) {
    var ps = figure.coords;
    var cs = figure.colors;
    var i, ii;
    switch (figure.type) {
      case 'lattice':
        var verticesPerRow = figure.verticesPerRow;
        var rows = Math.floor(ps.length / verticesPerRow) - 1;
        var cols = verticesPerRow - 1;
        for (i = 0; i < rows; i++) {
          var q = i * verticesPerRow;
          for (var j = 0; j < cols; j++, q++) {
            drawTriangle(data, context, ps[q], ps[q + 1], ps[q + verticesPerRow], cs[q], cs[q + 1], cs[q + verticesPerRow]);
            drawTriangle(data, context, ps[q + verticesPerRow + 1], ps[q + 1], ps[q + verticesPerRow], cs[q + verticesPerRow + 1], cs[q + 1], cs[q + verticesPerRow]);
          }
        }
        break;
      case 'triangles':
        for (i = 0, ii = ps.length; i < ii; i += 3) {
          drawTriangle(data, context, ps[i], ps[i + 1], ps[i + 2], cs[i], cs[i + 1], cs[i + 2]);
        }
        break;
      default:
        throw new Error('illegal figure');
    }
  }
  function createMeshCanvas(bounds, combinesScale, coords, colors, figures, backgroundColor, cachedCanvases, webGLContext) {
    var EXPECTED_SCALE = 1.1;
    var MAX_PATTERN_SIZE = 3000;
    var BORDER_SIZE = 2;
    var offsetX = Math.floor(bounds[0]);
    var offsetY = Math.floor(bounds[1]);
    var boundsWidth = Math.ceil(bounds[2]) - offsetX;
    var boundsHeight = Math.ceil(bounds[3]) - offsetY;
    var width = Math.min(Math.ceil(Math.abs(boundsWidth * combinesScale[0] * EXPECTED_SCALE)), MAX_PATTERN_SIZE);
    var height = Math.min(Math.ceil(Math.abs(boundsHeight * combinesScale[1] * EXPECTED_SCALE)), MAX_PATTERN_SIZE);
    var scaleX = boundsWidth / width;
    var scaleY = boundsHeight / height;
    var context = {
      coords,
      colors,
      offsetX: -offsetX,
      offsetY: -offsetY,
      scaleX: 1 / scaleX,
      scaleY: 1 / scaleY
    };
    var paddedWidth = width + BORDER_SIZE * 2;
    var paddedHeight = height + BORDER_SIZE * 2;
    var canvas, tmpCanvas, i, ii;
    if (webGLContext.isEnabled) {
      canvas = webGLContext.drawFigures({
        width,
        height,
        backgroundColor,
        figures,
        context
      });
      tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight, false);
      tmpCanvas.context.drawImage(canvas, BORDER_SIZE, BORDER_SIZE);
      canvas = tmpCanvas.canvas;
    } else {
      tmpCanvas = cachedCanvases.getCanvas('mesh', paddedWidth, paddedHeight, false);
      var tmpCtx = tmpCanvas.context;
      var data = tmpCtx.createImageData(width, height);
      if (backgroundColor) {
        var bytes = data.data;
        for (i = 0, ii = bytes.length; i < ii; i += 4) {
          bytes[i] = backgroundColor[0];
          bytes[i + 1] = backgroundColor[1];
          bytes[i + 2] = backgroundColor[2];
          bytes[i + 3] = 255;
        }
      }
      for (i = 0; i < figures.length; i++) {
        drawFigure(data, figures[i], context);
      }
      tmpCtx.putImageData(data, BORDER_SIZE, BORDER_SIZE);
      canvas = tmpCanvas.canvas;
    }
    return {
      canvas,
      offsetX: offsetX - BORDER_SIZE * scaleX,
      offsetY: offsetY - BORDER_SIZE * scaleY,
      scaleX,
      scaleY
    };
  }
  return createMeshCanvas;
}();
ShadingIRs.Mesh = {
  fromIR: function Mesh_fromIR(raw) {
    var coords = raw[2];
    var colors = raw[3];
    var figures = raw[4];
    var bounds = raw[5];
    var matrix = raw[6];
    var background = raw[8];
    return {
      type: 'Pattern',
      getPattern: function Mesh_getPattern(ctx, owner, shadingFill) {
        var scale;
        if (shadingFill) {
          scale = _util.Util.singularValueDecompose2dScale(ctx.mozCurrentTransform);
        } else {
          scale = _util.Util.singularValueDecompose2dScale(owner.baseTransform);
          if (matrix) {
            var matrixScale = _util.Util.singularValueDecompose2dScale(matrix);
            scale = [scale[0] * matrixScale[0], scale[1] * matrixScale[1]];
          }
        }
        var temporaryPatternCanvas = createMeshCanvas(bounds, scale, coords, colors, figures, shadingFill ? null : background, owner.cachedCanvases, owner.webGLContext);
        if (!shadingFill) {
          ctx.setTransform.apply(ctx, owner.baseTransform);
          if (matrix) {
            ctx.transform.apply(ctx, matrix);
          }
        }
        ctx.translate(temporaryPatternCanvas.offsetX, temporaryPatternCanvas.offsetY);
        ctx.scale(temporaryPatternCanvas.scaleX, temporaryPatternCanvas.scaleY);
        return ctx.createPattern(temporaryPatternCanvas.canvas, 'no-repeat');
      }
    };
  }
};
ShadingIRs.Dummy = {
  fromIR: function Dummy_fromIR() {
    return {
      type: 'Pattern',
      getPattern: function Dummy_fromIR_getPattern() {
        return 'hotpink';
      }
    };
  }
};
function getShadingPatternFromIR(raw) {
  var shadingIR = ShadingIRs[raw[0]];
  if (!shadingIR) {
    throw new Error(`Unknown IR type: ${raw[0]}`);
  }
  return shadingIR.fromIR(raw);
}
var TilingPattern = function TilingPatternClosure() {
  var PaintType = {
    COLORED: 1,
    UNCOLORED: 2
  };
  var MAX_PATTERN_SIZE = 3000;
  function TilingPattern(IR, color, ctx, canvasGraphicsFactory, baseTransform) {
    this.operatorList = IR[2];
    this.matrix = IR[3] || [1, 0, 0, 1, 0, 0];
    this.bbox = IR[4];
    this.xstep = IR[5];
    this.ystep = IR[6];
    this.paintType = IR[7];
    this.tilingType = IR[8];
    this.color = color;
    this.canvasGraphicsFactory = canvasGraphicsFactory;
    this.baseTransform = baseTransform;
    this.type = 'Pattern';
    this.ctx = ctx;
  }
  TilingPattern.prototype = {
    createPatternCanvas: function TilinPattern_createPatternCanvas(owner) {
      var operatorList = this.operatorList;
      var bbox = this.bbox;
      var xstep = this.xstep;
      var ystep = this.ystep;
      var paintType = this.paintType;
      var tilingType = this.tilingType;
      var color = this.color;
      var canvasGraphicsFactory = this.canvasGraphicsFactory;
      (0, _util.info)('TilingType: ' + tilingType);
      var x0 = bbox[0],
          y0 = bbox[1],
          x1 = bbox[2],
          y1 = bbox[3];
      var topLeft = [x0, y0];
      var botRight = [x0 + xstep, y0 + ystep];
      var width = botRight[0] - topLeft[0];
      var height = botRight[1] - topLeft[1];
      var matrixScale = _util.Util.singularValueDecompose2dScale(this.matrix);
      var curMatrixScale = _util.Util.singularValueDecompose2dScale(this.baseTransform);
      var combinedScale = [matrixScale[0] * curMatrixScale[0], matrixScale[1] * curMatrixScale[1]];
      width = Math.min(Math.ceil(Math.abs(width * combinedScale[0])), MAX_PATTERN_SIZE);
      height = Math.min(Math.ceil(Math.abs(height * combinedScale[1])), MAX_PATTERN_SIZE);
      var tmpCanvas = owner.cachedCanvases.getCanvas('pattern', width, height, true);
      var tmpCtx = tmpCanvas.context;
      var graphics = canvasGraphicsFactory.createCanvasGraphics(tmpCtx);
      graphics.groupLevel = owner.groupLevel;
      this.setFillAndStrokeStyleToContext(graphics, paintType, color);
      this.setScale(width, height, xstep, ystep);
      this.transformToScale(graphics);
      var tmpTranslate = [1, 0, 0, 1, -topLeft[0], -topLeft[1]];
      graphics.transform.apply(graphics, tmpTranslate);
      this.clipBbox(graphics, bbox, x0, y0, x1, y1);
      graphics.executeOperatorList(operatorList);
      return tmpCanvas.canvas;
    },
    setScale: function TilingPattern_setScale(width, height, xstep, ystep) {
      this.scale = [width / xstep, height / ystep];
    },
    transformToScale: function TilingPattern_transformToScale(graphics) {
      var scale = this.scale;
      var tmpScale = [scale[0], 0, 0, scale[1], 0, 0];
      graphics.transform.apply(graphics, tmpScale);
    },
    scaleToContext: function TilingPattern_scaleToContext() {
      var scale = this.scale;
      this.ctx.scale(1 / scale[0], 1 / scale[1]);
    },
    clipBbox: function clipBbox(graphics, bbox, x0, y0, x1, y1) {
      if (Array.isArray(bbox) && bbox.length === 4) {
        var bboxWidth = x1 - x0;
        var bboxHeight = y1 - y0;
        graphics.ctx.rect(x0, y0, bboxWidth, bboxHeight);
        graphics.clip();
        graphics.endPath();
      }
    },
    setFillAndStrokeStyleToContext: function setFillAndStrokeStyleToContext(graphics, paintType, color) {
      let context = graphics.ctx,
          current = graphics.current;
      switch (paintType) {
        case PaintType.COLORED:
          var ctx = this.ctx;
          context.fillStyle = ctx.fillStyle;
          context.strokeStyle = ctx.strokeStyle;
          current.fillColor = ctx.fillStyle;
          current.strokeColor = ctx.strokeStyle;
          break;
        case PaintType.UNCOLORED:
          var cssColor = _util.Util.makeCssRgb(color[0], color[1], color[2]);
          context.fillStyle = cssColor;
          context.strokeStyle = cssColor;
          current.fillColor = cssColor;
          current.strokeColor = cssColor;
          break;
        default:
          throw new _util.FormatError(`Unsupported paint type: ${paintType}`);
      }
    },
    getPattern: function TilingPattern_getPattern(ctx, owner) {
      var temporaryPatternCanvas = this.createPatternCanvas(owner);
      ctx = this.ctx;
      ctx.setTransform.apply(ctx, this.baseTransform);
      ctx.transform.apply(ctx, this.matrix);
      this.scaleToContext();
      return ctx.createPattern(temporaryPatternCanvas, 'repeat');
    }
  };
  return TilingPattern;
}();
exports.getShadingPatternFromIR = getShadingPatternFromIR;
exports.TilingPattern = TilingPattern;

/***/ }),
/* 13 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Metadata = undefined;

var _util = __w_pdfjs_require__(0);

var _dom_utils = __w_pdfjs_require__(1);

class Metadata {
  constructor(data) {
    (0, _util.assert)(typeof data === 'string', 'Metadata: input is not a string');
    data = this._repair(data);
    let parser = new _dom_utils.SimpleXMLParser();
    data = parser.parseFromString(data);
    this._metadata = Object.create(null);
    this._parse(data);
  }
  _repair(data) {
    return data.replace(/>\\376\\377([^<]+)/g, function (all, codes) {
      let bytes = codes.replace(/\\([0-3])([0-7])([0-7])/g, function (code, d1, d2, d3) {
        return String.fromCharCode(d1 * 64 + d2 * 8 + d3 * 1);
      }).replace(/&(amp|apos|gt|lt|quot);/g, function (str, name) {
        switch (name) {
          case 'amp':
            return '&';
          case 'apos':
            return '\'';
          case 'gt':
            return '>';
          case 'lt':
            return '<';
          case 'quot':
            return '\"';
        }
        throw new Error(`_repair: ${name} isn't defined.`);
      });
      let chars = '';
      for (let i = 0, ii = bytes.length; i < ii; i += 2) {
        let code = bytes.charCodeAt(i) * 256 + bytes.charCodeAt(i + 1);
        if (code >= 32 && code < 127 && code !== 60 && code !== 62 && code !== 38) {
          chars += String.fromCharCode(code);
        } else {
          chars += '&#x' + (0x10000 + code).toString(16).substring(1) + ';';
        }
      }
      return '>' + chars;
    });
  }
  _parse(domDocument) {
    let rdf = domDocument.documentElement;
    if (rdf.nodeName.toLowerCase() !== 'rdf:rdf') {
      rdf = rdf.firstChild;
      while (rdf && rdf.nodeName.toLowerCase() !== 'rdf:rdf') {
        rdf = rdf.nextSibling;
      }
    }
    let nodeName = rdf ? rdf.nodeName.toLowerCase() : null;
    if (!rdf || nodeName !== 'rdf:rdf' || !rdf.hasChildNodes()) {
      return;
    }
    let children = rdf.childNodes;
    for (let i = 0, ii = children.length; i < ii; i++) {
      let desc = children[i];
      if (desc.nodeName.toLowerCase() !== 'rdf:description') {
        continue;
      }
      for (let j = 0, jj = desc.childNodes.length; j < jj; j++) {
        if (desc.childNodes[j].nodeName.toLowerCase() !== '#text') {
          let entry = desc.childNodes[j];
          let name = entry.nodeName.toLowerCase();
          this._metadata[name] = entry.textContent.trim();
        }
      }
    }
  }
  get(name) {
    return this._metadata[name] || null;
  }
  getAll() {
    return this._metadata;
  }
  has(name) {
    return typeof this._metadata[name] !== 'undefined';
  }
}
exports.Metadata = Metadata;

/***/ }),
/* 14 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.PDFDataTransportStream = undefined;

var _util = __w_pdfjs_require__(0);

var PDFDataTransportStream = function PDFDataTransportStreamClosure() {
  function PDFDataTransportStream(params, pdfDataRangeTransport) {
    (0, _util.assert)(pdfDataRangeTransport);
    this._queuedChunks = [];
    var initialData = params.initialData;
    if (initialData && initialData.length > 0) {
      let buffer = new Uint8Array(initialData).buffer;
      this._queuedChunks.push(buffer);
    }
    this._pdfDataRangeTransport = pdfDataRangeTransport;
    this._isStreamingSupported = !params.disableStream;
    this._isRangeSupported = !params.disableRange;
    this._contentLength = params.length;
    this._fullRequestReader = null;
    this._rangeReaders = [];
    this._pdfDataRangeTransport.addRangeListener((begin, chunk) => {
      this._onReceiveData({
        begin,
        chunk
      });
    });
    this._pdfDataRangeTransport.addProgressListener(loaded => {
      this._onProgress({ loaded });
    });
    this._pdfDataRangeTransport.addProgressiveReadListener(chunk => {
      this._onReceiveData({ chunk });
    });
    this._pdfDataRangeTransport.transportReady();
  }
  PDFDataTransportStream.prototype = {
    _onReceiveData: function PDFDataTransportStream_onReceiveData(args) {
      let buffer = new Uint8Array(args.chunk).buffer;
      if (args.begin === undefined) {
        if (this._fullRequestReader) {
          this._fullRequestReader._enqueue(buffer);
        } else {
          this._queuedChunks.push(buffer);
        }
      } else {
        var found = this._rangeReaders.some(function (rangeReader) {
          if (rangeReader._begin !== args.begin) {
            return false;
          }
          rangeReader._enqueue(buffer);
          return true;
        });
        (0, _util.assert)(found);
      }
    },
    _onProgress: function PDFDataTransportStream_onDataProgress(evt) {
      if (this._rangeReaders.length > 0) {
        var firstReader = this._rangeReaders[0];
        if (firstReader.onProgress) {
          firstReader.onProgress({ loaded: evt.loaded });
        }
      }
    },
    _removeRangeReader: function PDFDataTransportStream_removeRangeReader(reader) {
      var i = this._rangeReaders.indexOf(reader);
      if (i >= 0) {
        this._rangeReaders.splice(i, 1);
      }
    },
    getFullReader: function PDFDataTransportStream_getFullReader() {
      (0, _util.assert)(!this._fullRequestReader);
      var queuedChunks = this._queuedChunks;
      this._queuedChunks = null;
      return new PDFDataTransportStreamReader(this, queuedChunks);
    },
    getRangeReader: function PDFDataTransportStream_getRangeReader(begin, end) {
      var reader = new PDFDataTransportStreamRangeReader(this, begin, end);
      this._pdfDataRangeTransport.requestDataRange(begin, end);
      this._rangeReaders.push(reader);
      return reader;
    },
    cancelAllRequests: function PDFDataTransportStream_cancelAllRequests(reason) {
      if (this._fullRequestReader) {
        this._fullRequestReader.cancel(reason);
      }
      var readers = this._rangeReaders.slice(0);
      readers.forEach(function (rangeReader) {
        rangeReader.cancel(reason);
      });
      this._pdfDataRangeTransport.abort();
    }
  };
  function PDFDataTransportStreamReader(stream, queuedChunks) {
    this._stream = stream;
    this._done = false;
    this._filename = null;
    this._queuedChunks = queuedChunks || [];
    this._requests = [];
    this._headersReady = Promise.resolve();
    stream._fullRequestReader = this;
    this.onProgress = null;
  }
  PDFDataTransportStreamReader.prototype = {
    _enqueue: function PDFDataTransportStreamReader_enqueue(chunk) {
      if (this._done) {
        return;
      }
      if (this._requests.length > 0) {
        var requestCapability = this._requests.shift();
        requestCapability.resolve({
          value: chunk,
          done: false
        });
        return;
      }
      this._queuedChunks.push(chunk);
    },
    get headersReady() {
      return this._headersReady;
    },
    get filename() {
      return this._filename;
    },
    get isRangeSupported() {
      return this._stream._isRangeSupported;
    },
    get isStreamingSupported() {
      return this._stream._isStreamingSupported;
    },
    get contentLength() {
      return this._stream._contentLength;
    },
    read: function PDFDataTransportStreamReader_read() {
      if (this._queuedChunks.length > 0) {
        var chunk = this._queuedChunks.shift();
        return Promise.resolve({
          value: chunk,
          done: false
        });
      }
      if (this._done) {
        return Promise.resolve({
          value: undefined,
          done: true
        });
      }
      var requestCapability = (0, _util.createPromiseCapability)();
      this._requests.push(requestCapability);
      return requestCapability.promise;
    },
    cancel: function PDFDataTransportStreamReader_cancel(reason) {
      this._done = true;
      this._requests.forEach(function (requestCapability) {
        requestCapability.resolve({
          value: undefined,
          done: true
        });
      });
      this._requests = [];
    }
  };
  function PDFDataTransportStreamRangeReader(stream, begin, end) {
    this._stream = stream;
    this._begin = begin;
    this._end = end;
    this._queuedChunk = null;
    this._requests = [];
    this._done = false;
    this.onProgress = null;
  }
  PDFDataTransportStreamRangeReader.prototype = {
    _enqueue: function PDFDataTransportStreamRangeReader_enqueue(chunk) {
      if (this._done) {
        return;
      }
      if (this._requests.length === 0) {
        this._queuedChunk = chunk;
      } else {
        var requestsCapability = this._requests.shift();
        requestsCapability.resolve({
          value: chunk,
          done: false
        });
        this._requests.forEach(function (requestCapability) {
          requestCapability.resolve({
            value: undefined,
            done: true
          });
        });
        this._requests = [];
      }
      this._done = true;
      this._stream._removeRangeReader(this);
    },
    get isStreamingSupported() {
      return false;
    },
    read: function PDFDataTransportStreamRangeReader_read() {
      if (this._queuedChunk) {
        let chunk = this._queuedChunk;
        this._queuedChunk = null;
        return Promise.resolve({
          value: chunk,
          done: false
        });
      }
      if (this._done) {
        return Promise.resolve({
          value: undefined,
          done: true
        });
      }
      var requestCapability = (0, _util.createPromiseCapability)();
      this._requests.push(requestCapability);
      return requestCapability.promise;
    },
    cancel: function PDFDataTransportStreamRangeReader_cancel(reason) {
      this._done = true;
      this._requests.forEach(function (requestCapability) {
        requestCapability.resolve({
          value: undefined,
          done: true
        });
      });
      this._requests = [];
      this._stream._removeRangeReader(this);
    }
  };
  return PDFDataTransportStream;
}();
exports.PDFDataTransportStream = PDFDataTransportStream;

/***/ }),
/* 15 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.WebGLContext = undefined;

var _util = __w_pdfjs_require__(0);

class WebGLContext {
  constructor({
    enable = false
  }) {
    this._enabled = enable === true;
  }
  get isEnabled() {
    let enabled = this._enabled;
    if (enabled) {
      enabled = WebGLUtils.tryInitGL();
    }
    return (0, _util.shadow)(this, 'isEnabled', enabled);
  }
  composeSMask({ layer, mask, properties }) {
    return WebGLUtils.composeSMask(layer, mask, properties);
  }
  drawFigures({ width, height, backgroundColor, figures, context }) {
    return WebGLUtils.drawFigures(width, height, backgroundColor, figures, context);
  }
  clear() {
    WebGLUtils.cleanup();
  }
}
var WebGLUtils = function WebGLUtilsClosure() {
  function loadShader(gl, code, shaderType) {
    var shader = gl.createShader(shaderType);
    gl.shaderSource(shader, code);
    gl.compileShader(shader);
    var compiled = gl.getShaderParameter(shader, gl.COMPILE_STATUS);
    if (!compiled) {
      var errorMsg = gl.getShaderInfoLog(shader);
      throw new Error('Error during shader compilation: ' + errorMsg);
    }
    return shader;
  }
  function createVertexShader(gl, code) {
    return loadShader(gl, code, gl.VERTEX_SHADER);
  }
  function createFragmentShader(gl, code) {
    return loadShader(gl, code, gl.FRAGMENT_SHADER);
  }
  function createProgram(gl, shaders) {
    var program = gl.createProgram();
    for (var i = 0, ii = shaders.length; i < ii; ++i) {
      gl.attachShader(program, shaders[i]);
    }
    gl.linkProgram(program);
    var linked = gl.getProgramParameter(program, gl.LINK_STATUS);
    if (!linked) {
      var errorMsg = gl.getProgramInfoLog(program);
      throw new Error('Error during program linking: ' + errorMsg);
    }
    return program;
  }
  function createTexture(gl, image, textureId) {
    gl.activeTexture(textureId);
    var texture = gl.createTexture();
    gl.bindTexture(gl.TEXTURE_2D, texture);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
    gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
    gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, image);
    return texture;
  }
  var currentGL, currentCanvas;
  function generateGL() {
    if (currentGL) {
      return;
    }
    currentCanvas = document.createElement('canvas');
    currentGL = currentCanvas.getContext('webgl', { premultipliedalpha: false });
  }
  var smaskVertexShaderCode = '\
  attribute vec2 a_position;                                    \
  attribute vec2 a_texCoord;                                    \
                                                                \
  uniform vec2 u_resolution;                                    \
                                                                \
  varying vec2 v_texCoord;                                      \
                                                                \
  void main() {                                                 \
    vec2 clipSpace = (a_position / u_resolution) * 2.0 - 1.0;   \
    gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);          \
                                                                \
    v_texCoord = a_texCoord;                                    \
  }                                                             ';
  var smaskFragmentShaderCode = '\
  precision mediump float;                                      \
                                                                \
  uniform vec4 u_backdrop;                                      \
  uniform int u_subtype;                                        \
  uniform sampler2D u_image;                                    \
  uniform sampler2D u_mask;                                     \
                                                                \
  varying vec2 v_texCoord;                                      \
                                                                \
  void main() {                                                 \
    vec4 imageColor = texture2D(u_image, v_texCoord);           \
    vec4 maskColor = texture2D(u_mask, v_texCoord);             \
    if (u_backdrop.a > 0.0) {                                   \
      maskColor.rgb = maskColor.rgb * maskColor.a +             \
                      u_backdrop.rgb * (1.0 - maskColor.a);     \
    }                                                           \
    float lum;                                                  \
    if (u_subtype == 0) {                                       \
      lum = maskColor.a;                                        \
    } else {                                                    \
      lum = maskColor.r * 0.3 + maskColor.g * 0.59 +            \
            maskColor.b * 0.11;                                 \
    }                                                           \
    imageColor.a *= lum;                                        \
    imageColor.rgb *= imageColor.a;                             \
    gl_FragColor = imageColor;                                  \
  }                                                             ';
  var smaskCache = null;
  function initSmaskGL() {
    var canvas, gl;
    generateGL();
    canvas = currentCanvas;
    currentCanvas = null;
    gl = currentGL;
    currentGL = null;
    var vertexShader = createVertexShader(gl, smaskVertexShaderCode);
    var fragmentShader = createFragmentShader(gl, smaskFragmentShaderCode);
    var program = createProgram(gl, [vertexShader, fragmentShader]);
    gl.useProgram(program);
    var cache = {};
    cache.gl = gl;
    cache.canvas = canvas;
    cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
    cache.positionLocation = gl.getAttribLocation(program, 'a_position');
    cache.backdropLocation = gl.getUniformLocation(program, 'u_backdrop');
    cache.subtypeLocation = gl.getUniformLocation(program, 'u_subtype');
    var texCoordLocation = gl.getAttribLocation(program, 'a_texCoord');
    var texLayerLocation = gl.getUniformLocation(program, 'u_image');
    var texMaskLocation = gl.getUniformLocation(program, 'u_mask');
    var texCoordBuffer = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, texCoordBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 0.0, 1.0, 1.0]), gl.STATIC_DRAW);
    gl.enableVertexAttribArray(texCoordLocation);
    gl.vertexAttribPointer(texCoordLocation, 2, gl.FLOAT, false, 0, 0);
    gl.uniform1i(texLayerLocation, 0);
    gl.uniform1i(texMaskLocation, 1);
    smaskCache = cache;
  }
  function composeSMask(layer, mask, properties) {
    var width = layer.width,
        height = layer.height;
    if (!smaskCache) {
      initSmaskGL();
    }
    var cache = smaskCache,
        canvas = cache.canvas,
        gl = cache.gl;
    canvas.width = width;
    canvas.height = height;
    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
    gl.uniform2f(cache.resolutionLocation, width, height);
    if (properties.backdrop) {
      gl.uniform4f(cache.resolutionLocation, properties.backdrop[0], properties.backdrop[1], properties.backdrop[2], 1);
    } else {
      gl.uniform4f(cache.resolutionLocation, 0, 0, 0, 0);
    }
    gl.uniform1i(cache.subtypeLocation, properties.subtype === 'Luminosity' ? 1 : 0);
    var texture = createTexture(gl, layer, gl.TEXTURE0);
    var maskTexture = createTexture(gl, mask, gl.TEXTURE1);
    var buffer = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, buffer);
    gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([0, 0, width, 0, 0, height, 0, height, width, 0, width, height]), gl.STATIC_DRAW);
    gl.enableVertexAttribArray(cache.positionLocation);
    gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
    gl.clearColor(0, 0, 0, 0);
    gl.enable(gl.BLEND);
    gl.blendFunc(gl.ONE, gl.ONE_MINUS_SRC_ALPHA);
    gl.clear(gl.COLOR_BUFFER_BIT);
    gl.drawArrays(gl.TRIANGLES, 0, 6);
    gl.flush();
    gl.deleteTexture(texture);
    gl.deleteTexture(maskTexture);
    gl.deleteBuffer(buffer);
    return canvas;
  }
  var figuresVertexShaderCode = '\
  attribute vec2 a_position;                                    \
  attribute vec3 a_color;                                       \
                                                                \
  uniform vec2 u_resolution;                                    \
  uniform vec2 u_scale;                                         \
  uniform vec2 u_offset;                                        \
                                                                \
  varying vec4 v_color;                                         \
                                                                \
  void main() {                                                 \
    vec2 position = (a_position + u_offset) * u_scale;          \
    vec2 clipSpace = (position / u_resolution) * 2.0 - 1.0;     \
    gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);          \
                                                                \
    v_color = vec4(a_color / 255.0, 1.0);                       \
  }                                                             ';
  var figuresFragmentShaderCode = '\
  precision mediump float;                                      \
                                                                \
  varying vec4 v_color;                                         \
                                                                \
  void main() {                                                 \
    gl_FragColor = v_color;                                     \
  }                                                             ';
  var figuresCache = null;
  function initFiguresGL() {
    var canvas, gl;
    generateGL();
    canvas = currentCanvas;
    currentCanvas = null;
    gl = currentGL;
    currentGL = null;
    var vertexShader = createVertexShader(gl, figuresVertexShaderCode);
    var fragmentShader = createFragmentShader(gl, figuresFragmentShaderCode);
    var program = createProgram(gl, [vertexShader, fragmentShader]);
    gl.useProgram(program);
    var cache = {};
    cache.gl = gl;
    cache.canvas = canvas;
    cache.resolutionLocation = gl.getUniformLocation(program, 'u_resolution');
    cache.scaleLocation = gl.getUniformLocation(program, 'u_scale');
    cache.offsetLocation = gl.getUniformLocation(program, 'u_offset');
    cache.positionLocation = gl.getAttribLocation(program, 'a_position');
    cache.colorLocation = gl.getAttribLocation(program, 'a_color');
    figuresCache = cache;
  }
  function drawFigures(width, height, backgroundColor, figures, context) {
    if (!figuresCache) {
      initFiguresGL();
    }
    var cache = figuresCache,
        canvas = cache.canvas,
        gl = cache.gl;
    canvas.width = width;
    canvas.height = height;
    gl.viewport(0, 0, gl.drawingBufferWidth, gl.drawingBufferHeight);
    gl.uniform2f(cache.resolutionLocation, width, height);
    var count = 0;
    var i, ii, rows;
    for (i = 0, ii = figures.length; i < ii; i++) {
      switch (figures[i].type) {
        case 'lattice':
          rows = figures[i].coords.length / figures[i].verticesPerRow | 0;
          count += (rows - 1) * (figures[i].verticesPerRow - 1) * 6;
          break;
        case 'triangles':
          count += figures[i].coords.length;
          break;
      }
    }
    var coords = new Float32Array(count * 2);
    var colors = new Uint8Array(count * 3);
    var coordsMap = context.coords,
        colorsMap = context.colors;
    var pIndex = 0,
        cIndex = 0;
    for (i = 0, ii = figures.length; i < ii; i++) {
      var figure = figures[i],
          ps = figure.coords,
          cs = figure.colors;
      switch (figure.type) {
        case 'lattice':
          var cols = figure.verticesPerRow;
          rows = ps.length / cols | 0;
          for (var row = 1; row < rows; row++) {
            var offset = row * cols + 1;
            for (var col = 1; col < cols; col++, offset++) {
              coords[pIndex] = coordsMap[ps[offset - cols - 1]];
              coords[pIndex + 1] = coordsMap[ps[offset - cols - 1] + 1];
              coords[pIndex + 2] = coordsMap[ps[offset - cols]];
              coords[pIndex + 3] = coordsMap[ps[offset - cols] + 1];
              coords[pIndex + 4] = coordsMap[ps[offset - 1]];
              coords[pIndex + 5] = coordsMap[ps[offset - 1] + 1];
              colors[cIndex] = colorsMap[cs[offset - cols - 1]];
              colors[cIndex + 1] = colorsMap[cs[offset - cols - 1] + 1];
              colors[cIndex + 2] = colorsMap[cs[offset - cols - 1] + 2];
              colors[cIndex + 3] = colorsMap[cs[offset - cols]];
              colors[cIndex + 4] = colorsMap[cs[offset - cols] + 1];
              colors[cIndex + 5] = colorsMap[cs[offset - cols] + 2];
              colors[cIndex + 6] = colorsMap[cs[offset - 1]];
              colors[cIndex + 7] = colorsMap[cs[offset - 1] + 1];
              colors[cIndex + 8] = colorsMap[cs[offset - 1] + 2];
              coords[pIndex + 6] = coords[pIndex + 2];
              coords[pIndex + 7] = coords[pIndex + 3];
              coords[pIndex + 8] = coords[pIndex + 4];
              coords[pIndex + 9] = coords[pIndex + 5];
              coords[pIndex + 10] = coordsMap[ps[offset]];
              coords[pIndex + 11] = coordsMap[ps[offset] + 1];
              colors[cIndex + 9] = colors[cIndex + 3];
              colors[cIndex + 10] = colors[cIndex + 4];
              colors[cIndex + 11] = colors[cIndex + 5];
              colors[cIndex + 12] = colors[cIndex + 6];
              colors[cIndex + 13] = colors[cIndex + 7];
              colors[cIndex + 14] = colors[cIndex + 8];
              colors[cIndex + 15] = colorsMap[cs[offset]];
              colors[cIndex + 16] = colorsMap[cs[offset] + 1];
              colors[cIndex + 17] = colorsMap[cs[offset] + 2];
              pIndex += 12;
              cIndex += 18;
            }
          }
          break;
        case 'triangles':
          for (var j = 0, jj = ps.length; j < jj; j++) {
            coords[pIndex] = coordsMap[ps[j]];
            coords[pIndex + 1] = coordsMap[ps[j] + 1];
            colors[cIndex] = colorsMap[cs[j]];
            colors[cIndex + 1] = colorsMap[cs[j] + 1];
            colors[cIndex + 2] = colorsMap[cs[j] + 2];
            pIndex += 2;
            cIndex += 3;
          }
          break;
      }
    }
    if (backgroundColor) {
      gl.clearColor(backgroundColor[0] / 255, backgroundColor[1] / 255, backgroundColor[2] / 255, 1.0);
    } else {
      gl.clearColor(0, 0, 0, 0);
    }
    gl.clear(gl.COLOR_BUFFER_BIT);
    var coordsBuffer = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, coordsBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, coords, gl.STATIC_DRAW);
    gl.enableVertexAttribArray(cache.positionLocation);
    gl.vertexAttribPointer(cache.positionLocation, 2, gl.FLOAT, false, 0, 0);
    var colorsBuffer = gl.createBuffer();
    gl.bindBuffer(gl.ARRAY_BUFFER, colorsBuffer);
    gl.bufferData(gl.ARRAY_BUFFER, colors, gl.STATIC_DRAW);
    gl.enableVertexAttribArray(cache.colorLocation);
    gl.vertexAttribPointer(cache.colorLocation, 3, gl.UNSIGNED_BYTE, false, 0, 0);
    gl.uniform2f(cache.scaleLocation, context.scaleX, context.scaleY);
    gl.uniform2f(cache.offsetLocation, context.offsetX, context.offsetY);
    gl.drawArrays(gl.TRIANGLES, 0, count);
    gl.flush();
    gl.deleteBuffer(coordsBuffer);
    gl.deleteBuffer(colorsBuffer);
    return canvas;
  }
  return {
    tryInitGL() {
      try {
        generateGL();
        return !!currentGL;
      } catch (ex) {}
      return false;
    },
    composeSMask,
    drawFigures,
    cleanup() {
      if (smaskCache && smaskCache.canvas) {
        smaskCache.canvas.width = 0;
        smaskCache.canvas.height = 0;
      }
      if (figuresCache && figuresCache.canvas) {
        figuresCache.canvas.width = 0;
        figuresCache.canvas.height = 0;
      }
      smaskCache = null;
      figuresCache = null;
    }
  };
}();
exports.WebGLContext = WebGLContext;

/***/ }),
/* 16 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.renderTextLayer = undefined;

var _util = __w_pdfjs_require__(0);

var _global_scope = __w_pdfjs_require__(2);

var _global_scope2 = _interopRequireDefault(_global_scope);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var renderTextLayer = function renderTextLayerClosure() {
  var MAX_TEXT_DIVS_TO_RENDER = 100000;
  var NonWhitespaceRegexp = /\S/;
  function isAllWhitespace(str) {
    return !NonWhitespaceRegexp.test(str);
  }
  var styleBuf = ['left: ', 0, 'px; top: ', 0, 'px; font-size: ', 0, 'px; font-family: ', '', ';'];
  function appendText(task, geom, styles) {
    var textDiv = document.createElement('div');
    var textDivProperties = {
      style: null,
      angle: 0,
      canvasWidth: 0,
      isWhitespace: false,
      originalTransform: null,
      paddingBottom: 0,
      paddingLeft: 0,
      paddingRight: 0,
      paddingTop: 0,
      scale: 1
    };
    task._textDivs.push(textDiv);
    if (isAllWhitespace(geom.str)) {
      textDivProperties.isWhitespace = true;
      task._textDivProperties.set(textDiv, textDivProperties);
      return;
    }
    var tx = _util.Util.transform(task._viewport.transform, geom.transform);
    var angle = Math.atan2(tx[1], tx[0]);
    var style = styles[geom.fontName];
    if (style.vertical) {
      angle += Math.PI / 2;
    }
    var fontHeight = Math.sqrt(tx[2] * tx[2] + tx[3] * tx[3]);
    var fontAscent = fontHeight;
    if (style.ascent) {
      fontAscent = style.ascent * fontAscent;
    } else if (style.descent) {
      fontAscent = (1 + style.descent) * fontAscent;
    }
    var left;
    var top;
    if (angle === 0) {
      left = tx[4];
      top = tx[5] - fontAscent;
    } else {
      left = tx[4] + fontAscent * Math.sin(angle);
      top = tx[5] - fontAscent * Math.cos(angle);
    }
    styleBuf[1] = left;
    styleBuf[3] = top;
    styleBuf[5] = fontHeight;
    styleBuf[7] = style.fontFamily;
    textDivProperties.style = styleBuf.join('');
    textDiv.setAttribute('style', textDivProperties.style);
    textDiv.textContent = geom.str;
    if (task._fontInspectorEnabled) {
      textDiv.dataset.fontName = geom.fontName;
    }
    if (angle !== 0) {
      textDivProperties.angle = angle * (180 / Math.PI);
    }
    if (geom.str.length > 1) {
      if (style.vertical) {
        textDivProperties.canvasWidth = geom.height * task._viewport.scale;
      } else {
        textDivProperties.canvasWidth = geom.width * task._viewport.scale;
      }
    }
    task._textDivProperties.set(textDiv, textDivProperties);
    if (task._textContentStream) {
      task._layoutText(textDiv);
    }
    if (task._enhanceTextSelection) {
      var angleCos = 1,
          angleSin = 0;
      if (angle !== 0) {
        angleCos = Math.cos(angle);
        angleSin = Math.sin(angle);
      }
      var divWidth = (style.vertical ? geom.height : geom.width) * task._viewport.scale;
      var divHeight = fontHeight;
      var m, b;
      if (angle !== 0) {
        m = [angleCos, angleSin, -angleSin, angleCos, left, top];
        b = _util.Util.getAxialAlignedBoundingBox([0, 0, divWidth, divHeight], m);
      } else {
        b = [left, top, left + divWidth, top + divHeight];
      }
      task._bounds.push({
        left: b[0],
        top: b[1],
        right: b[2],
        bottom: b[3],
        div: textDiv,
        size: [divWidth, divHeight],
        m
      });
    }
  }
  function render(task) {
    if (task._canceled) {
      return;
    }
    var textDivs = task._textDivs;
    var capability = task._capability;
    var textDivsLength = textDivs.length;
    if (textDivsLength > MAX_TEXT_DIVS_TO_RENDER) {
      task._renderingDone = true;
      capability.resolve();
      return;
    }
    if (!task._textContentStream) {
      for (var i = 0; i < textDivsLength; i++) {
        task._layoutText(textDivs[i]);
      }
    }
    task._renderingDone = true;
    capability.resolve();
  }
  function expand(task) {
    var bounds = task._bounds;
    var viewport = task._viewport;
    var expanded = expandBounds(viewport.width, viewport.height, bounds);
    for (var i = 0; i < expanded.length; i++) {
      var div = bounds[i].div;
      var divProperties = task._textDivProperties.get(div);
      if (divProperties.angle === 0) {
        divProperties.paddingLeft = bounds[i].left - expanded[i].left;
        divProperties.paddingTop = bounds[i].top - expanded[i].top;
        divProperties.paddingRight = expanded[i].right - bounds[i].right;
        divProperties.paddingBottom = expanded[i].bottom - bounds[i].bottom;
        task._textDivProperties.set(div, divProperties);
        continue;
      }
      var e = expanded[i],
          b = bounds[i];
      var m = b.m,
          c = m[0],
          s = m[1];
      var points = [[0, 0], [0, b.size[1]], [b.size[0], 0], b.size];
      var ts = new Float64Array(64);
      points.forEach(function (p, i) {
        var t = _util.Util.applyTransform(p, m);
        ts[i + 0] = c && (e.left - t[0]) / c;
        ts[i + 4] = s && (e.top - t[1]) / s;
        ts[i + 8] = c && (e.right - t[0]) / c;
        ts[i + 12] = s && (e.bottom - t[1]) / s;
        ts[i + 16] = s && (e.left - t[0]) / -s;
        ts[i + 20] = c && (e.top - t[1]) / c;
        ts[i + 24] = s && (e.right - t[0]) / -s;
        ts[i + 28] = c && (e.bottom - t[1]) / c;
        ts[i + 32] = c && (e.left - t[0]) / -c;
        ts[i + 36] = s && (e.top - t[1]) / -s;
        ts[i + 40] = c && (e.right - t[0]) / -c;
        ts[i + 44] = s && (e.bottom - t[1]) / -s;
        ts[i + 48] = s && (e.left - t[0]) / s;
        ts[i + 52] = c && (e.top - t[1]) / -c;
        ts[i + 56] = s && (e.right - t[0]) / s;
        ts[i + 60] = c && (e.bottom - t[1]) / -c;
      });
      var findPositiveMin = function (ts, offset, count) {
        var result = 0;
        for (var i = 0; i < count; i++) {
          var t = ts[offset++];
          if (t > 0) {
            result = result ? Math.min(t, result) : t;
          }
        }
        return result;
      };
      var boxScale = 1 + Math.min(Math.abs(c), Math.abs(s));
      divProperties.paddingLeft = findPositiveMin(ts, 32, 16) / boxScale;
      divProperties.paddingTop = findPositiveMin(ts, 48, 16) / boxScale;
      divProperties.paddingRight = findPositiveMin(ts, 0, 16) / boxScale;
      divProperties.paddingBottom = findPositiveMin(ts, 16, 16) / boxScale;
      task._textDivProperties.set(div, divProperties);
    }
  }
  function expandBounds(width, height, boxes) {
    var bounds = boxes.map(function (box, i) {
      return {
        x1: box.left,
        y1: box.top,
        x2: box.right,
        y2: box.bottom,
        index: i,
        x1New: undefined,
        x2New: undefined
      };
    });
    expandBoundsLTR(width, bounds);
    var expanded = new Array(boxes.length);
    bounds.forEach(function (b) {
      var i = b.index;
      expanded[i] = {
        left: b.x1New,
        top: 0,
        right: b.x2New,
        bottom: 0
      };
    });
    boxes.map(function (box, i) {
      var e = expanded[i],
          b = bounds[i];
      b.x1 = box.top;
      b.y1 = width - e.right;
      b.x2 = box.bottom;
      b.y2 = width - e.left;
      b.index = i;
      b.x1New = undefined;
      b.x2New = undefined;
    });
    expandBoundsLTR(height, bounds);
    bounds.forEach(function (b) {
      var i = b.index;
      expanded[i].top = b.x1New;
      expanded[i].bottom = b.x2New;
    });
    return expanded;
  }
  function expandBoundsLTR(width, bounds) {
    bounds.sort(function (a, b) {
      return a.x1 - b.x1 || a.index - b.index;
    });
    var fakeBoundary = {
      x1: -Infinity,
      y1: -Infinity,
      x2: 0,
      y2: Infinity,
      index: -1,
      x1New: 0,
      x2New: 0
    };
    var horizon = [{
      start: -Infinity,
      end: Infinity,
      boundary: fakeBoundary
    }];
    bounds.forEach(function (boundary) {
      var i = 0;
      while (i < horizon.length && horizon[i].end <= boundary.y1) {
        i++;
      }
      var j = horizon.length - 1;
      while (j >= 0 && horizon[j].start >= boundary.y2) {
        j--;
      }
      var horizonPart, affectedBoundary;
      var q,
          k,
          maxXNew = -Infinity;
      for (q = i; q <= j; q++) {
        horizonPart = horizon[q];
        affectedBoundary = horizonPart.boundary;
        var xNew;
        if (affectedBoundary.x2 > boundary.x1) {
          xNew = affectedBoundary.index > boundary.index ? affectedBoundary.x1New : boundary.x1;
        } else if (affectedBoundary.x2New === undefined) {
          xNew = (affectedBoundary.x2 + boundary.x1) / 2;
        } else {
          xNew = affectedBoundary.x2New;
        }
        if (xNew > maxXNew) {
          maxXNew = xNew;
        }
      }
      boundary.x1New = maxXNew;
      for (q = i; q <= j; q++) {
        horizonPart = horizon[q];
        affectedBoundary = horizonPart.boundary;
        if (affectedBoundary.x2New === undefined) {
          if (affectedBoundary.x2 > boundary.x1) {
            if (affectedBoundary.index > boundary.index) {
              affectedBoundary.x2New = affectedBoundary.x2;
            }
          } else {
            affectedBoundary.x2New = maxXNew;
          }
        } else if (affectedBoundary.x2New > maxXNew) {
          affectedBoundary.x2New = Math.max(maxXNew, affectedBoundary.x2);
        }
      }
      var changedHorizon = [],
          lastBoundary = null;
      for (q = i; q <= j; q++) {
        horizonPart = horizon[q];
        affectedBoundary = horizonPart.boundary;
        var useBoundary = affectedBoundary.x2 > boundary.x2 ? affectedBoundary : boundary;
        if (lastBoundary === useBoundary) {
          changedHorizon[changedHorizon.length - 1].end = horizonPart.end;
        } else {
          changedHorizon.push({
            start: horizonPart.start,
            end: horizonPart.end,
            boundary: useBoundary
          });
          lastBoundary = useBoundary;
        }
      }
      if (horizon[i].start < boundary.y1) {
        changedHorizon[0].start = boundary.y1;
        changedHorizon.unshift({
          start: horizon[i].start,
          end: boundary.y1,
          boundary: horizon[i].boundary
        });
      }
      if (boundary.y2 < horizon[j].end) {
        changedHorizon[changedHorizon.length - 1].end = boundary.y2;
        changedHorizon.push({
          start: boundary.y2,
          end: horizon[j].end,
          boundary: horizon[j].boundary
        });
      }
      for (q = i; q <= j; q++) {
        horizonPart = horizon[q];
        affectedBoundary = horizonPart.boundary;
        if (affectedBoundary.x2New !== undefined) {
          continue;
        }
        var used = false;
        for (k = i - 1; !used && k >= 0 && horizon[k].start >= affectedBoundary.y1; k--) {
          used = horizon[k].boundary === affectedBoundary;
        }
        for (k = j + 1; !used && k < horizon.length && horizon[k].end <= affectedBoundary.y2; k++) {
          used = horizon[k].boundary === affectedBoundary;
        }
        for (k = 0; !used && k < changedHorizon.length; k++) {
          used = changedHorizon[k].boundary === affectedBoundary;
        }
        if (!used) {
          affectedBoundary.x2New = maxXNew;
        }
      }
      Array.prototype.splice.apply(horizon, [i, j - i + 1].concat(changedHorizon));
    });
    horizon.forEach(function (horizonPart) {
      var affectedBoundary = horizonPart.boundary;
      if (affectedBoundary.x2New === undefined) {
        affectedBoundary.x2New = Math.max(width, affectedBoundary.x2);
      }
    });
  }
  function TextLayerRenderTask({ textContent, textContentStream, container, viewport, textDivs, textContentItemsStr, enhanceTextSelection }) {
    this._textContent = textContent;
    this._textContentStream = textContentStream;
    this._container = container;
    this._viewport = viewport;
    this._textDivs = textDivs || [];
    this._textContentItemsStr = textContentItemsStr || [];
    this._enhanceTextSelection = !!enhanceTextSelection;
    this._fontInspectorEnabled = !!(_global_scope2.default.FontInspector && _global_scope2.default.FontInspector.enabled);
    this._reader = null;
    this._layoutTextLastFontSize = null;
    this._layoutTextLastFontFamily = null;
    this._layoutTextCtx = null;
    this._textDivProperties = new WeakMap();
    this._renderingDone = false;
    this._canceled = false;
    this._capability = (0, _util.createPromiseCapability)();
    this._renderTimer = null;
    this._bounds = [];
  }
  TextLayerRenderTask.prototype = {
    get promise() {
      return this._capability.promise;
    },
    cancel: function TextLayer_cancel() {
      if (this._reader) {
        this._reader.cancel(new _util.AbortException('text layer task cancelled'));
        this._reader = null;
      }
      this._canceled = true;
      if (this._renderTimer !== null) {
        clearTimeout(this._renderTimer);
        this._renderTimer = null;
      }
      this._capability.reject('canceled');
    },
    _processItems(items, styleCache) {
      for (let i = 0, len = items.length; i < len; i++) {
        this._textContentItemsStr.push(items[i].str);
        appendText(this, items[i], styleCache);
      }
    },
    _layoutText(textDiv) {
      let textLayerFrag = this._container;
      let textDivProperties = this._textDivProperties.get(textDiv);
      if (textDivProperties.isWhitespace) {
        return;
      }
      let fontSize = textDiv.style.fontSize;
      let fontFamily = textDiv.style.fontFamily;
      if (fontSize !== this._layoutTextLastFontSize || fontFamily !== this._layoutTextLastFontFamily) {
        this._layoutTextCtx.font = fontSize + ' ' + fontFamily;
        this._lastFontSize = fontSize;
        this._lastFontFamily = fontFamily;
      }
      let width = this._layoutTextCtx.measureText(textDiv.textContent).width;
      let transform = '';
      if (textDivProperties.canvasWidth !== 0 && width > 0) {
        textDivProperties.scale = textDivProperties.canvasWidth / width;
        transform = 'scaleX(' + textDivProperties.scale + ')';
      }
      if (textDivProperties.angle !== 0) {
        transform = 'rotate(' + textDivProperties.angle + 'deg) ' + transform;
      }
      if (transform !== '') {
        textDivProperties.originalTransform = transform;
        textDiv.style.transform = transform;
      }
      this._textDivProperties.set(textDiv, textDivProperties);
      textLayerFrag.appendChild(textDiv);
    },
    _render: function TextLayer_render(timeout) {
      let capability = (0, _util.createPromiseCapability)();
      let styleCache = Object.create(null);
      let canvas = document.createElement('canvas');
      canvas.mozOpaque = true;
      this._layoutTextCtx = canvas.getContext('2d', { alpha: false });
      if (this._textContent) {
        let textItems = this._textContent.items;
        let textStyles = this._textContent.styles;
        this._processItems(textItems, textStyles);
        capability.resolve();
      } else if (this._textContentStream) {
        let pump = () => {
          this._reader.read().then(({ value, done }) => {
            if (done) {
              capability.resolve();
              return;
            }
            _util.Util.extendObj(styleCache, value.styles);
            this._processItems(value.items, styleCache);
            pump();
          }, capability.reject);
        };
        this._reader = this._textContentStream.getReader();
        pump();
      } else {
        throw new Error('Neither "textContent" nor "textContentStream"' + ' parameters specified.');
      }
      capability.promise.then(() => {
        styleCache = null;
        if (!timeout) {
          render(this);
        } else {
          this._renderTimer = setTimeout(() => {
            render(this);
            this._renderTimer = null;
          }, timeout);
        }
      }, this._capability.reject);
    },
    expandTextDivs: function TextLayer_expandTextDivs(expandDivs) {
      if (!this._enhanceTextSelection || !this._renderingDone) {
        return;
      }
      if (this._bounds !== null) {
        expand(this);
        this._bounds = null;
      }
      for (var i = 0, ii = this._textDivs.length; i < ii; i++) {
        var div = this._textDivs[i];
        var divProperties = this._textDivProperties.get(div);
        if (divProperties.isWhitespace) {
          continue;
        }
        if (expandDivs) {
          var transform = '',
              padding = '';
          if (divProperties.scale !== 1) {
            transform = 'scaleX(' + divProperties.scale + ')';
          }
          if (divProperties.angle !== 0) {
            transform = 'rotate(' + divProperties.angle + 'deg) ' + transform;
          }
          if (divProperties.paddingLeft !== 0) {
            padding += ' padding-left: ' + divProperties.paddingLeft / divProperties.scale + 'px;';
            transform += ' translateX(' + -divProperties.paddingLeft / divProperties.scale + 'px)';
          }
          if (divProperties.paddingTop !== 0) {
            padding += ' padding-top: ' + divProperties.paddingTop + 'px;';
            transform += ' translateY(' + -divProperties.paddingTop + 'px)';
          }
          if (divProperties.paddingRight !== 0) {
            padding += ' padding-right: ' + divProperties.paddingRight / divProperties.scale + 'px;';
          }
          if (divProperties.paddingBottom !== 0) {
            padding += ' padding-bottom: ' + divProperties.paddingBottom + 'px;';
          }
          if (padding !== '') {
            div.setAttribute('style', divProperties.style + padding);
          }
          if (transform !== '') {
            div.style.transform = transform;
          }
        } else {
          div.style.padding = 0;
          div.style.transform = divProperties.originalTransform || '';
        }
      }
    }
  };
  function renderTextLayer(renderParameters) {
    var task = new TextLayerRenderTask({
      textContent: renderParameters.textContent,
      textContentStream: renderParameters.textContentStream,
      container: renderParameters.container,
      viewport: renderParameters.viewport,
      textDivs: renderParameters.textDivs,
      textContentItemsStr: renderParameters.textContentItemsStr,
      enhanceTextSelection: renderParameters.enhanceTextSelection
    });
    task._render(renderParameters.timeout);
    return task;
  }
  return renderTextLayer;
}();
exports.renderTextLayer = renderTextLayer;

/***/ }),
/* 17 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.AnnotationLayer = undefined;

var _dom_utils = __w_pdfjs_require__(1);

var _util = __w_pdfjs_require__(0);

class AnnotationElementFactory {
  static create(parameters) {
    let subtype = parameters.data.annotationType;
    switch (subtype) {
      case _util.AnnotationType.LINK:
        return new LinkAnnotationElement(parameters);
      case _util.AnnotationType.TEXT:
        return new TextAnnotationElement(parameters);
      case _util.AnnotationType.WIDGET:
        let fieldType = parameters.data.fieldType;
        switch (fieldType) {
          case 'Tx':
            return new TextWidgetAnnotationElement(parameters);
          case 'Btn':
            if (parameters.data.radioButton) {
              return new RadioButtonWidgetAnnotationElement(parameters);
            } else if (parameters.data.checkBox) {
              return new CheckboxWidgetAnnotationElement(parameters);
            }
            return new PushButtonWidgetAnnotationElement(parameters);
          case 'Ch':
            return new ChoiceWidgetAnnotationElement(parameters);
        }
        return new WidgetAnnotationElement(parameters);
      case _util.AnnotationType.POPUP:
        return new PopupAnnotationElement(parameters);
      case _util.AnnotationType.LINE:
        return new LineAnnotationElement(parameters);
      case _util.AnnotationType.SQUARE:
        return new SquareAnnotationElement(parameters);
      case _util.AnnotationType.CIRCLE:
        return new CircleAnnotationElement(parameters);
      case _util.AnnotationType.POLYLINE:
        return new PolylineAnnotationElement(parameters);
      case _util.AnnotationType.POLYGON:
        return new PolygonAnnotationElement(parameters);
      case _util.AnnotationType.HIGHLIGHT:
        return new HighlightAnnotationElement(parameters);
      case _util.AnnotationType.UNDERLINE:
        return new UnderlineAnnotationElement(parameters);
      case _util.AnnotationType.SQUIGGLY:
        return new SquigglyAnnotationElement(parameters);
      case _util.AnnotationType.STRIKEOUT:
        return new StrikeOutAnnotationElement(parameters);
      case _util.AnnotationType.STAMP:
        return new StampAnnotationElement(parameters);
      case _util.AnnotationType.FILEATTACHMENT:
        return new FileAttachmentAnnotationElement(parameters);
      default:
        return new AnnotationElement(parameters);
    }
  }
}
class AnnotationElement {
  constructor(parameters, isRenderable = false, ignoreBorder = false) {
    this.isRenderable = isRenderable;
    this.data = parameters.data;
    this.layer = parameters.layer;
    this.page = parameters.page;
    this.viewport = parameters.viewport;
    this.linkService = parameters.linkService;
    this.downloadManager = parameters.downloadManager;
    this.imageResourcesPath = parameters.imageResourcesPath;
    this.renderInteractiveForms = parameters.renderInteractiveForms;
    this.svgFactory = parameters.svgFactory;
    if (isRenderable) {
      this.container = this._createContainer(ignoreBorder);
    }
  }
  _createContainer(ignoreBorder = false) {
    let data = this.data,
        page = this.page,
        viewport = this.viewport;
    let container = document.createElement('section');
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    container.setAttribute('data-annotation-id', data.id);
    let rect = _util.Util.normalizeRect([data.rect[0], page.view[3] - data.rect[1] + page.view[1], data.rect[2], page.view[3] - data.rect[3] + page.view[1]]);
    container.style.transform = 'matrix(' + viewport.transform.join(',') + ')';
    container.style.transformOrigin = -rect[0] + 'px ' + -rect[1] + 'px';
    if (!ignoreBorder && data.borderStyle.width > 0) {
      container.style.borderWidth = data.borderStyle.width + 'px';
      if (data.borderStyle.style !== _util.AnnotationBorderStyleType.UNDERLINE) {
        width = width - 2 * data.borderStyle.width;
        height = height - 2 * data.borderStyle.width;
      }
      let horizontalRadius = data.borderStyle.horizontalCornerRadius;
      let verticalRadius = data.borderStyle.verticalCornerRadius;
      if (horizontalRadius > 0 || verticalRadius > 0) {
        let radius = horizontalRadius + 'px / ' + verticalRadius + 'px';
        container.style.borderRadius = radius;
      }
      switch (data.borderStyle.style) {
        case _util.AnnotationBorderStyleType.SOLID:
          container.style.borderStyle = 'solid';
          break;
        case _util.AnnotationBorderStyleType.DASHED:
          container.style.borderStyle = 'dashed';
          break;
        case _util.AnnotationBorderStyleType.BEVELED:
          (0, _util.warn)('Unimplemented border style: beveled');
          break;
        case _util.AnnotationBorderStyleType.INSET:
          (0, _util.warn)('Unimplemented border style: inset');
          break;
        case _util.AnnotationBorderStyleType.UNDERLINE:
          container.style.borderBottomStyle = 'solid';
          break;
        default:
          break;
      }
      if (data.color) {
        container.style.borderColor = _util.Util.makeCssRgb(data.color[0] | 0, data.color[1] | 0, data.color[2] | 0);
      } else {
        container.style.borderWidth = 0;
      }
    }
    container.style.left = rect[0] + 'px';
    container.style.top = rect[1] + 'px';
    container.style.width = width + 'px';
    container.style.height = height + 'px';
    return container;
  }
  _createPopup(container, trigger, data) {
    if (!trigger) {
      trigger = document.createElement('div');
      trigger.style.height = container.style.height;
      trigger.style.width = container.style.width;
      container.appendChild(trigger);
    }
    let popupElement = new PopupElement({
      container,
      trigger,
      color: data.color,
      title: data.title,
      contents: data.contents,
      hideWrapper: true
    });
    let popup = popupElement.render();
    popup.style.left = container.style.width;
    container.appendChild(popup);
  }
  render() {
    (0, _util.unreachable)('Abstract method `AnnotationElement.render` called');
  }
}
class LinkAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.url || parameters.data.dest || parameters.data.action);
    super(parameters, isRenderable);
  }
  render() {
    this.container.className = 'linkAnnotation';
    let { data, linkService } = this;
    let link = document.createElement('a');
    (0, _dom_utils.addLinkAttributes)(link, {
      url: data.url,
      target: data.newWindow ? _dom_utils.LinkTarget.BLANK : linkService.externalLinkTarget,
      rel: linkService.externalLinkRel
    });
    if (!data.url) {
      if (data.action) {
        this._bindNamedAction(link, data.action);
      } else {
        this._bindLink(link, data.dest);
      }
    }
    this.container.appendChild(link);
    return this.container;
  }
  _bindLink(link, destination) {
    link.href = this.linkService.getDestinationHash(destination);
    link.onclick = () => {
      if (destination) {
        this.linkService.navigateTo(destination);
      }
      return false;
    };
    if (destination) {
      link.className = 'internalLink';
    }
  }
  _bindNamedAction(link, action) {
    link.href = this.linkService.getAnchorUrl('');
    link.onclick = () => {
      this.linkService.executeNamedAction(action);
      return false;
    };
    link.className = 'internalLink';
  }
}
class TextAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable);
  }
  render() {
    this.container.className = 'textAnnotation';
    let image = document.createElement('img');
    image.style.height = this.container.style.height;
    image.style.width = this.container.style.width;
    image.src = this.imageResourcesPath + 'annotation-' + this.data.name.toLowerCase() + '.svg';
    image.alt = '[{{type}} Annotation]';
    image.dataset.l10nId = 'text_annotation_type';
    image.dataset.l10nArgs = JSON.stringify({ type: this.data.name });
    if (!this.data.hasPopup) {
      this._createPopup(this.container, image, this.data);
    }
    this.container.appendChild(image);
    return this.container;
  }
}
class WidgetAnnotationElement extends AnnotationElement {
  render() {
    return this.container;
  }
}
class TextWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    let isRenderable = parameters.renderInteractiveForms || !parameters.data.hasAppearance && !!parameters.data.fieldValue;
    super(parameters, isRenderable);
  }
  render() {
    const TEXT_ALIGNMENT = ['left', 'center', 'right'];
    this.container.className = 'textWidgetAnnotation';
    let element = null;
    if (this.renderInteractiveForms) {
      if (this.data.multiLine) {
        element = document.createElement('textarea');
        element.textContent = this.data.fieldValue;
      } else {
        element = document.createElement('input');
        element.type = 'text';
        element.setAttribute('value', this.data.fieldValue);
      }
      element.disabled = this.data.readOnly;
      if (this.data.maxLen !== null) {
        element.maxLength = this.data.maxLen;
      }
      if (this.data.comb) {
        let fieldWidth = this.data.rect[2] - this.data.rect[0];
        let combWidth = fieldWidth / this.data.maxLen;
        element.classList.add('comb');
        element.style.letterSpacing = 'calc(' + combWidth + 'px - 1ch)';
      }
    } else {
      element = document.createElement('div');
      element.textContent = this.data.fieldValue;
      element.style.verticalAlign = 'middle';
      element.style.display = 'table-cell';
      let font = null;
      if (this.data.fontRefName) {
        font = this.page.commonObjs.getData(this.data.fontRefName);
      }
      this._setTextStyle(element, font);
    }
    if (this.data.textAlignment !== null) {
      element.style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
    }
    this.container.appendChild(element);
    return this.container;
  }
  _setTextStyle(element, font) {
    let style = element.style;
    style.fontSize = this.data.fontSize + 'px';
    style.direction = this.data.fontDirection < 0 ? 'rtl' : 'ltr';
    if (!font) {
      return;
    }
    style.fontWeight = font.black ? font.bold ? '900' : 'bold' : font.bold ? 'bold' : 'normal';
    style.fontStyle = font.italic ? 'italic' : 'normal';
    let fontFamily = font.loadedName ? '"' + font.loadedName + '", ' : '';
    let fallbackName = font.fallbackName || 'Helvetica, sans-serif';
    style.fontFamily = fontFamily + fallbackName;
  }
}
class CheckboxWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }
  render() {
    this.container.className = 'buttonWidgetAnnotation checkBox';
    let element = document.createElement('input');
    element.disabled = this.data.readOnly;
    element.type = 'checkbox';
    if (this.data.fieldValue && this.data.fieldValue !== 'Off') {
      element.setAttribute('checked', true);
    }
    this.container.appendChild(element);
    return this.container;
  }
}
class RadioButtonWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }
  render() {
    this.container.className = 'buttonWidgetAnnotation radioButton';
    let element = document.createElement('input');
    element.disabled = this.data.readOnly;
    element.type = 'radio';
    element.name = this.data.fieldName;
    if (this.data.fieldValue === this.data.buttonValue) {
      element.setAttribute('checked', true);
    }
    this.container.appendChild(element);
    return this.container;
  }
}
class PushButtonWidgetAnnotationElement extends LinkAnnotationElement {
  render() {
    let container = super.render();
    container.className = 'buttonWidgetAnnotation pushButton';
    return container;
  }
}
class ChoiceWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }
  render() {
    this.container.className = 'choiceWidgetAnnotation';
    let selectElement = document.createElement('select');
    selectElement.disabled = this.data.readOnly;
    if (!this.data.combo) {
      selectElement.size = this.data.options.length;
      if (this.data.multiSelect) {
        selectElement.multiple = true;
      }
    }
    for (let i = 0, ii = this.data.options.length; i < ii; i++) {
      let option = this.data.options[i];
      let optionElement = document.createElement('option');
      optionElement.textContent = option.displayValue;
      optionElement.value = option.exportValue;
      if (this.data.fieldValue.includes(option.displayValue)) {
        optionElement.setAttribute('selected', true);
      }
      selectElement.appendChild(optionElement);
    }
    this.container.appendChild(selectElement);
    return this.container;
  }
}
class PopupAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable);
  }
  render() {
    const IGNORE_TYPES = ['Line', 'Square', 'Circle', 'PolyLine', 'Polygon'];
    this.container.className = 'popupAnnotation';
    if (IGNORE_TYPES.includes(this.data.parentType)) {
      return this.container;
    }
    let selector = '[data-annotation-id="' + this.data.parentId + '"]';
    let parentElement = this.layer.querySelector(selector);
    if (!parentElement) {
      return this.container;
    }
    let popup = new PopupElement({
      container: this.container,
      trigger: parentElement,
      color: this.data.color,
      title: this.data.title,
      contents: this.data.contents
    });
    let parentLeft = parseFloat(parentElement.style.left);
    let parentWidth = parseFloat(parentElement.style.width);
    this.container.style.transformOrigin = -(parentLeft + parentWidth) + 'px -' + parentElement.style.top;
    this.container.style.left = parentLeft + parentWidth + 'px';
    this.container.appendChild(popup.render());
    return this.container;
  }
}
class PopupElement {
  constructor(parameters) {
    this.container = parameters.container;
    this.trigger = parameters.trigger;
    this.color = parameters.color;
    this.title = parameters.title;
    this.contents = parameters.contents;
    this.hideWrapper = parameters.hideWrapper || false;
    this.pinned = false;
  }
  render() {
    const BACKGROUND_ENLIGHT = 0.7;
    let wrapper = document.createElement('div');
    wrapper.className = 'popupWrapper';
    this.hideElement = this.hideWrapper ? wrapper : this.container;
    this.hideElement.setAttribute('hidden', true);
    let popup = document.createElement('div');
    popup.className = 'popup';
    let color = this.color;
    if (color) {
      let r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0];
      let g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1];
      let b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2];
      popup.style.backgroundColor = _util.Util.makeCssRgb(r | 0, g | 0, b | 0);
    }
    let contents = this._formatContents(this.contents);
    let title = document.createElement('h1');
    title.textContent = this.title;
    this.trigger.addEventListener('click', this._toggle.bind(this));
    this.trigger.addEventListener('mouseover', this._show.bind(this, false));
    this.trigger.addEventListener('mouseout', this._hide.bind(this, false));
    popup.addEventListener('click', this._hide.bind(this, true));
    popup.appendChild(title);
    popup.appendChild(contents);
    wrapper.appendChild(popup);
    return wrapper;
  }
  _formatContents(contents) {
    let p = document.createElement('p');
    let lines = contents.split(/(?:\r\n?|\n)/);
    for (let i = 0, ii = lines.length; i < ii; ++i) {
      let line = lines[i];
      p.appendChild(document.createTextNode(line));
      if (i < ii - 1) {
        p.appendChild(document.createElement('br'));
      }
    }
    return p;
  }
  _toggle() {
    if (this.pinned) {
      this._hide(true);
    } else {
      this._show(true);
    }
  }
  _show(pin = false) {
    if (pin) {
      this.pinned = true;
    }
    if (this.hideElement.hasAttribute('hidden')) {
      this.hideElement.removeAttribute('hidden');
      this.container.style.zIndex += 1;
    }
  }
  _hide(unpin = true) {
    if (unpin) {
      this.pinned = false;
    }
    if (!this.hideElement.hasAttribute('hidden') && !this.pinned) {
      this.hideElement.setAttribute('hidden', true);
      this.container.style.zIndex -= 1;
    }
  }
}
class LineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'lineAnnotation';
    let data = this.data;
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    let svg = this.svgFactory.create(width, height);
    let line = this.svgFactory.createElement('svg:line');
    line.setAttribute('x1', data.rect[2] - data.lineCoordinates[0]);
    line.setAttribute('y1', data.rect[3] - data.lineCoordinates[1]);
    line.setAttribute('x2', data.rect[2] - data.lineCoordinates[2]);
    line.setAttribute('y2', data.rect[3] - data.lineCoordinates[3]);
    line.setAttribute('stroke-width', data.borderStyle.width);
    line.setAttribute('stroke', 'transparent');
    svg.appendChild(line);
    this.container.append(svg);
    this._createPopup(this.container, line, data);
    return this.container;
  }
}
class SquareAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'squareAnnotation';
    let data = this.data;
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    let svg = this.svgFactory.create(width, height);
    let borderWidth = data.borderStyle.width;
    let square = this.svgFactory.createElement('svg:rect');
    square.setAttribute('x', borderWidth / 2);
    square.setAttribute('y', borderWidth / 2);
    square.setAttribute('width', width - borderWidth);
    square.setAttribute('height', height - borderWidth);
    square.setAttribute('stroke-width', borderWidth);
    square.setAttribute('stroke', 'transparent');
    square.setAttribute('fill', 'none');
    svg.appendChild(square);
    this.container.append(svg);
    this._createPopup(this.container, square, data);
    return this.container;
  }
}
class CircleAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'circleAnnotation';
    let data = this.data;
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    let svg = this.svgFactory.create(width, height);
    let borderWidth = data.borderStyle.width;
    let circle = this.svgFactory.createElement('svg:ellipse');
    circle.setAttribute('cx', width / 2);
    circle.setAttribute('cy', height / 2);
    circle.setAttribute('rx', width / 2 - borderWidth / 2);
    circle.setAttribute('ry', height / 2 - borderWidth / 2);
    circle.setAttribute('stroke-width', borderWidth);
    circle.setAttribute('stroke', 'transparent');
    circle.setAttribute('fill', 'none');
    svg.appendChild(circle);
    this.container.append(svg);
    this._createPopup(this.container, circle, data);
    return this.container;
  }
}
class PolylineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
    this.containerClassName = 'polylineAnnotation';
    this.svgElementName = 'svg:polyline';
  }
  render() {
    this.container.className = this.containerClassName;
    let data = this.data;
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    let svg = this.svgFactory.create(width, height);
    let vertices = data.vertices;
    let points = [];
    for (let i = 0, ii = vertices.length; i < ii; i++) {
      let x = vertices[i].x - data.rect[0];
      let y = data.rect[3] - vertices[i].y;
      points.push(x + ',' + y);
    }
    points = points.join(' ');
    let borderWidth = data.borderStyle.width;
    let polyline = this.svgFactory.createElement(this.svgElementName);
    polyline.setAttribute('points', points);
    polyline.setAttribute('stroke-width', borderWidth);
    polyline.setAttribute('stroke', 'transparent');
    polyline.setAttribute('fill', 'none');
    svg.appendChild(polyline);
    this.container.append(svg);
    this._createPopup(this.container, polyline, data);
    return this.container;
  }
}
class PolygonAnnotationElement extends PolylineAnnotationElement {
  constructor(parameters) {
    super(parameters);
    this.containerClassName = 'polygonAnnotation';
    this.svgElementName = 'svg:polygon';
  }
}
class HighlightAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'highlightAnnotation';
    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }
    return this.container;
  }
}
class UnderlineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'underlineAnnotation';
    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }
    return this.container;
  }
}
class SquigglyAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'squigglyAnnotation';
    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }
    return this.container;
  }
}
class StrikeOutAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'strikeoutAnnotation';
    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }
    return this.container;
  }
}
class StampAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    let isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }
  render() {
    this.container.className = 'stampAnnotation';
    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }
    return this.container;
  }
}
class FileAttachmentAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    super(parameters, true);
    let file = this.data.file;
    this.filename = (0, _dom_utils.getFilenameFromUrl)(file.filename);
    this.content = file.content;
    this.linkService.onFileAttachmentAnnotation({
      id: (0, _util.stringToPDFString)(file.filename),
      filename: file.filename,
      content: file.content
    });
  }
  render() {
    this.container.className = 'fileAttachmentAnnotation';
    let trigger = document.createElement('div');
    trigger.style.height = this.container.style.height;
    trigger.style.width = this.container.style.width;
    trigger.addEventListener('dblclick', this._download.bind(this));
    if (!this.data.hasPopup && (this.data.title || this.data.contents)) {
      this._createPopup(this.container, trigger, this.data);
    }
    this.container.appendChild(trigger);
    return this.container;
  }
  _download() {
    if (!this.downloadManager) {
      (0, _util.warn)('Download cannot be started due to unavailable download manager');
      return;
    }
    this.downloadManager.downloadData(this.content, this.filename, '');
  }
}
class AnnotationLayer {
  static render(parameters) {
    for (let i = 0, ii = parameters.annotations.length; i < ii; i++) {
      let data = parameters.annotations[i];
      if (!data) {
        continue;
      }
      let element = AnnotationElementFactory.create({
        data,
        layer: parameters.div,
        page: parameters.page,
        viewport: parameters.viewport,
        linkService: parameters.linkService,
        downloadManager: parameters.downloadManager,
        imageResourcesPath: parameters.imageResourcesPath || '',
        renderInteractiveForms: parameters.renderInteractiveForms || false,
        svgFactory: new _dom_utils.DOMSVGFactory()
      });
      if (element.isRenderable) {
        parameters.div.appendChild(element.render());
      }
    }
  }
  static update(parameters) {
    for (let i = 0, ii = parameters.annotations.length; i < ii; i++) {
      let data = parameters.annotations[i];
      let element = parameters.div.querySelector('[data-annotation-id="' + data.id + '"]');
      if (element) {
        element.style.transform = 'matrix(' + parameters.viewport.transform.join(',') + ')';
      }
    }
    parameters.div.removeAttribute('hidden');
  }
}
exports.AnnotationLayer = AnnotationLayer;

/***/ }),
/* 18 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.SVGGraphics = undefined;

var _util = __w_pdfjs_require__(0);

var _dom_utils = __w_pdfjs_require__(1);

var _is_node = __w_pdfjs_require__(19);

var _is_node2 = _interopRequireDefault(_is_node);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var SVGGraphics = function () {
  throw new Error('Not implemented: SVGGraphics');
};
;
exports.SVGGraphics = SVGGraphics;

/***/ }),
/* 19 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


module.exports = function isNodeJS() {
  return typeof process === 'object' && process + '' === '[object process]';
};

/***/ })
/******/ ]);
});