pdfjs-dist/web/pdf_viewer.js

Generic build of Mozilla's PDF.js library.

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2018 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/web/pdf_viewer", [], factory);
	else if(typeof exports === 'object')
		exports["pdfjs-dist/web/pdf_viewer"] = factory();
	else
		root["pdfjs-dist/web/pdf_viewer"] = root.pdfjsViewer = factory();
})(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;
/******/
/******/ 	// expose the module cache
/******/ 	__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, { enumerable: true, get: getter });
/******/ 		}
/******/ 	};
/******/
/******/ 	// define __esModule on exports
/******/ 	__w_pdfjs_require__.r = function(exports) {
/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
/******/ 		}
/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
/******/ 	};
/******/
/******/ 	// create a fake namespace object
/******/ 	// mode & 1: value is a module id, require it
/******/ 	// mode & 2: merge all properties of value into the ns
/******/ 	// mode & 4: return value when already ns object
/******/ 	// mode & 8|1: behave like require
/******/ 	__w_pdfjs_require__.t = function(value, mode) {
/******/ 		if(mode & 1) value = __w_pdfjs_require__(value);
/******/ 		if(mode & 8) return value;
/******/ 		if((mode & 4) && typeof value === 'object' && value && value.__esModule) return value;
/******/ 		var ns = Object.create(null);
/******/ 		__w_pdfjs_require__.r(ns);
/******/ 		Object.defineProperty(ns, 'default', { enumerable: true, value: value });
/******/ 		if(mode & 2 && typeof value != 'string') for(var key in value) __w_pdfjs_require__.d(ns, key, function(key) { return value[key]; }.bind(null, key));
/******/ 		return ns;
/******/ 	};
/******/
/******/ 	// getDefaultExport function for compatibility with non-harmony modules
/******/ 	__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;
/******/ 	};
/******/
/******/ 	// Object.prototype.hasOwnProperty.call
/******/ 	__w_pdfjs_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
/******/
/******/ 	// __webpack_public_path__
/******/ 	__w_pdfjs_require__.p = "";
/******/
/******/
/******/ 	// Load entry module and return exports
/******/ 	return __w_pdfjs_require__(__w_pdfjs_require__.s = 0);
/******/ })
/************************************************************************/
/******/ ([
/* 0 */
/***/ (function(module, exports, __w_pdfjs_require__) {

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
Object.defineProperty(exports, "AnnotationLayerBuilder", {
  enumerable: true,
  get: function get() {
    return _annotation_layer_builder.AnnotationLayerBuilder;
  }
});
Object.defineProperty(exports, "DefaultAnnotationLayerFactory", {
  enumerable: true,
  get: function get() {
    return _annotation_layer_builder.DefaultAnnotationLayerFactory;
  }
});
Object.defineProperty(exports, "DefaultTextLayerFactory", {
  enumerable: true,
  get: function get() {
    return _text_layer_builder.DefaultTextLayerFactory;
  }
});
Object.defineProperty(exports, "TextLayerBuilder", {
  enumerable: true,
  get: function get() {
    return _text_layer_builder.TextLayerBuilder;
  }
});
Object.defineProperty(exports, "EventBus", {
  enumerable: true,
  get: function get() {
    return _ui_utils.EventBus;
  }
});
Object.defineProperty(exports, "NullL10n", {
  enumerable: true,
  get: function get() {
    return _ui_utils.NullL10n;
  }
});
Object.defineProperty(exports, "ProgressBar", {
  enumerable: true,
  get: function get() {
    return _ui_utils.ProgressBar;
  }
});
Object.defineProperty(exports, "PDFLinkService", {
  enumerable: true,
  get: function get() {
    return _pdf_link_service.PDFLinkService;
  }
});
Object.defineProperty(exports, "SimpleLinkService", {
  enumerable: true,
  get: function get() {
    return _pdf_link_service.SimpleLinkService;
  }
});
Object.defineProperty(exports, "DownloadManager", {
  enumerable: true,
  get: function get() {
    return _download_manager.DownloadManager;
  }
});
Object.defineProperty(exports, "GenericL10n", {
  enumerable: true,
  get: function get() {
    return _genericl10n.GenericL10n;
  }
});
Object.defineProperty(exports, "PDFFindController", {
  enumerable: true,
  get: function get() {
    return _pdf_find_controller.PDFFindController;
  }
});
Object.defineProperty(exports, "PDFHistory", {
  enumerable: true,
  get: function get() {
    return _pdf_history.PDFHistory;
  }
});
Object.defineProperty(exports, "PDFPageView", {
  enumerable: true,
  get: function get() {
    return _pdf_page_view.PDFPageView;
  }
});
Object.defineProperty(exports, "PDFSinglePageViewer", {
  enumerable: true,
  get: function get() {
    return _pdf_single_page_viewer.PDFSinglePageViewer;
  }
});
Object.defineProperty(exports, "PDFViewer", {
  enumerable: true,
  get: function get() {
    return _pdf_viewer.PDFViewer;
  }
});

var _annotation_layer_builder = __w_pdfjs_require__(1);

var _text_layer_builder = __w_pdfjs_require__(9);

var _ui_utils = __w_pdfjs_require__(3);

var _pdf_link_service = __w_pdfjs_require__(8);

var _download_manager = __w_pdfjs_require__(10);

var _genericl10n = __w_pdfjs_require__(11);

var _pdf_find_controller = __w_pdfjs_require__(13);

var _pdf_history = __w_pdfjs_require__(15);

var _pdf_page_view = __w_pdfjs_require__(16);

var _pdf_single_page_viewer = __w_pdfjs_require__(19);

var _pdf_viewer = __w_pdfjs_require__(21);

var pdfjsVersion = '2.1.266';
var pdfjsBuild = '81f5835c';
(0, _ui_utils.getGlobalEventBus)(true);

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

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.DefaultAnnotationLayerFactory = exports.AnnotationLayerBuilder = void 0;

var _pdfjsLib = __w_pdfjs_require__(2);

var _ui_utils = __w_pdfjs_require__(3);

var _pdf_link_service = __w_pdfjs_require__(8);

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

var AnnotationLayerBuilder =
/*#__PURE__*/
function () {
  function AnnotationLayerBuilder(_ref) {
    var pageDiv = _ref.pageDiv,
        pdfPage = _ref.pdfPage,
        linkService = _ref.linkService,
        downloadManager = _ref.downloadManager,
        _ref$imageResourcesPa = _ref.imageResourcesPath,
        imageResourcesPath = _ref$imageResourcesPa === void 0 ? '' : _ref$imageResourcesPa,
        _ref$renderInteractiv = _ref.renderInteractiveForms,
        renderInteractiveForms = _ref$renderInteractiv === void 0 ? false : _ref$renderInteractiv,
        _ref$l10n = _ref.l10n,
        l10n = _ref$l10n === void 0 ? _ui_utils.NullL10n : _ref$l10n;

    _classCallCheck(this, AnnotationLayerBuilder);

    this.pageDiv = pageDiv;
    this.pdfPage = pdfPage;
    this.linkService = linkService;
    this.downloadManager = downloadManager;
    this.imageResourcesPath = imageResourcesPath;
    this.renderInteractiveForms = renderInteractiveForms;
    this.l10n = l10n;
    this.div = null;
    this._cancelled = false;
  }

  _createClass(AnnotationLayerBuilder, [{
    key: "render",
    value: function render(viewport) {
      var _this = this;

      var intent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'display';
      this.pdfPage.getAnnotations({
        intent: intent
      }).then(function (annotations) {
        if (_this._cancelled) {
          return;
        }

        var parameters = {
          viewport: viewport.clone({
            dontFlip: true
          }),
          div: _this.div,
          annotations: annotations,
          page: _this.pdfPage,
          imageResourcesPath: _this.imageResourcesPath,
          renderInteractiveForms: _this.renderInteractiveForms,
          linkService: _this.linkService,
          downloadManager: _this.downloadManager
        };

        if (_this.div) {
          _pdfjsLib.AnnotationLayer.update(parameters);
        } else {
          if (annotations.length === 0) {
            return;
          }

          _this.div = document.createElement('div');
          _this.div.className = 'annotationLayer';

          _this.pageDiv.appendChild(_this.div);

          parameters.div = _this.div;

          _pdfjsLib.AnnotationLayer.render(parameters);

          _this.l10n.translate(_this.div);
        }
      });
    }
  }, {
    key: "cancel",
    value: function cancel() {
      this._cancelled = true;
    }
  }, {
    key: "hide",
    value: function hide() {
      if (!this.div) {
        return;
      }

      this.div.setAttribute('hidden', 'true');
    }
  }]);

  return AnnotationLayerBuilder;
}();

exports.AnnotationLayerBuilder = AnnotationLayerBuilder;

var DefaultAnnotationLayerFactory =
/*#__PURE__*/
function () {
  function DefaultAnnotationLayerFactory() {
    _classCallCheck(this, DefaultAnnotationLayerFactory);
  }

  _createClass(DefaultAnnotationLayerFactory, [{
    key: "createAnnotationLayerBuilder",
    value: function createAnnotationLayerBuilder(pageDiv, pdfPage) {
      var imageResourcesPath = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : '';
      var renderInteractiveForms = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
      var l10n = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : _ui_utils.NullL10n;
      return new AnnotationLayerBuilder({
        pageDiv: pageDiv,
        pdfPage: pdfPage,
        imageResourcesPath: imageResourcesPath,
        renderInteractiveForms: renderInteractiveForms,
        linkService: new _pdf_link_service.SimpleLinkService(),
        l10n: l10n
      });
    }
  }]);

  return DefaultAnnotationLayerFactory;
}();

exports.DefaultAnnotationLayerFactory = DefaultAnnotationLayerFactory;

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

"use strict";


var pdfjsLib;

if (typeof window !== 'undefined' && window['pdfjs-dist/build/pdf']) {
  pdfjsLib = window['pdfjs-dist/build/pdf'];
} else {
  pdfjsLib = require('../build/pdf.js');
}

module.exports = pdfjsLib;

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

"use strict";


Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isValidRotation = isValidRotation;
exports.isValidScrollMode = isValidScrollMode;
exports.isValidSpreadMode = isValidSpreadMode;
exports.isPortraitOrientation = isPortraitOrientation;
exports.getGlobalEventBus = getGlobalEventBus;
exports.getPDFFileNameFromURL = getPDFFileNameFromURL;
exports.noContextMenuHandler = noContextMenuHandler;
exports.parseQueryString = parseQueryString;
exports.backtrackBeforeAllVisibleElements = backtrackBeforeAllVisibleElements;
exports.getVisibleElements = getVisibleElements;
exports.roundToDivide = roundToDivide;
exports.getPageSizeInches = getPageSizeInches;
exports.approximateFraction = approximateFraction;
exports.getOutputScale = getOutputScale;
exports.scrollIntoView = scrollIntoView;
exports.watchScroll = watchScroll;
exports.binarySearchFirstItem = binarySearchFirstItem;
exports.normalizeWheelEventDelta = normalizeWheelEventDelta;
exports.waitOnEventOrTimeout = waitOnEventOrTimeout;
exports.moveToEndOfArray = moveToEndOfArray;
exports.WaitOnType = exports.animationStarted = exports.ProgressBar = exports.EventBus = exports.NullL10n = exports.SpreadMode = exports.ScrollMode = exports.TextLayerMode = exports.RendererType = exports.PresentationModeState = exports.VERTICAL_PADDING = exports.SCROLLBAR_PADDING = exports.MAX_AUTO_SCALE = exports.UNKNOWN_SCALE = exports.MAX_SCALE = exports.MIN_SCALE = exports.DEFAULT_SCALE = exports.DEFAULT_SCALE_VALUE = exports.CSS_UNITS = void 0;

var _regenerator = _interopRequireDefault(__w_pdfjs_require__(4));

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

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a 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); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance"); }

function _iterableToArrayLimit(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

var CSS_UNITS = 96.0 / 72.0;
exports.CSS_UNITS = CSS_UNITS;
var DEFAULT_SCALE_VALUE = 'auto';
exports.DEFAULT_SCALE_VALUE = DEFAULT_SCALE_VALUE;
var DEFAULT_SCALE = 1.0;
exports.DEFAULT_SCALE = DEFAULT_SCALE;
var MIN_SCALE = 0.10;
exports.MIN_SCALE = MIN_SCALE;
var MAX_SCALE = 10.0;
exports.MAX_SCALE = MAX_SCALE;
var UNKNOWN_SCALE = 0;
exports.UNKNOWN_SCALE = UNKNOWN_SCALE;
var MAX_AUTO_SCALE = 1.25;
exports.MAX_AUTO_SCALE = MAX_AUTO_SCALE;
var SCROLLBAR_PADDING = 40;
exports.SCROLLBAR_PADDING = SCROLLBAR_PADDING;
var VERTICAL_PADDING = 5;
exports.VERTICAL_PADDING = VERTICAL_PADDING;
var PresentationModeState = {
  UNKNOWN: 0,
  NORMAL: 1,
  CHANGING: 2,
  FULLSCREEN: 3
};
exports.PresentationModeState = PresentationModeState;
var RendererType = {
  CANVAS: 'canvas',
  SVG: 'svg'
};
exports.RendererType = RendererType;
var TextLayerMode = {
  DISABLE: 0,
  ENABLE: 1,
  ENABLE_ENHANCE: 2
};
exports.TextLayerMode = TextLayerMode;
var ScrollMode = {
  UNKNOWN: -1,
  VERTICAL: 0,
  HORIZONTAL: 1,
  WRAPPED: 2
};
exports.ScrollMode = ScrollMode;
var SpreadMode = {
  UNKNOWN: -1,
  NONE: 0,
  ODD: 1,
  EVEN: 2
};
exports.SpreadMode = SpreadMode;

function formatL10nValue(text, args) {
  if (!args) {
    return text;
  }

  return text.replace(/\{\{\s*(\w+)\s*\}\}/g, function (all, name) {
    return name in args ? args[name] : '{{' + name + '}}';
  });
}

var NullL10n = {
  getLanguage: function () {
    var _getLanguage = _asyncToGenerator(
    /*#__PURE__*/
    _regenerator.default.mark(function _callee() {
      return _regenerator.default.wrap(function _callee$(_context) {
        while (1) {
          switch (_context.prev = _context.next) {
            case 0:
              return _context.abrupt("return", 'en-us');

            case 1:
            case "end":
              return _context.stop();
          }
        }
      }, _callee, this);
    }));

    function getLanguage() {
      return _getLanguage.apply(this, arguments);
    }

    return getLanguage;
  }(),
  getDirection: function () {
    var _getDirection = _asyncToGenerator(
    /*#__PURE__*/
    _regenerator.default.mark(function _callee2() {
      return _regenerator.default.wrap(function _callee2$(_context2) {
        while (1) {
          switch (_context2.prev = _context2.next) {
            case 0:
              return _context2.abrupt("return", 'ltr');

            case 1:
            case "end":
              return _context2.stop();
          }
        }
      }, _callee2, this);
    }));

    function getDirection() {
      return _getDirection.apply(this, arguments);
    }

    return getDirection;
  }(),
  get: function () {
    var _get = _asyncToGenerator(
    /*#__PURE__*/
    _regenerator.default.mark(function _callee3(property, args, fallback) {
      return _regenerator.default.wrap(function _callee3$(_context3) {
        while (1) {
          switch (_context3.prev = _context3.next) {
            case 0:
              return _context3.abrupt("return", formatL10nValue(fallback, args));

            case 1:
            case "end":
              return _context3.stop();
          }
        }
      }, _callee3, this);
    }));

    function get(_x, _x2, _x3) {
      return _get.apply(this, arguments);
    }

    return get;
  }(),
  translate: function () {
    var _translate = _asyncToGenerator(
    /*#__PURE__*/
    _regenerator.default.mark(function _callee4(element) {
      return _regenerator.default.wrap(function _callee4$(_context4) {
        while (1) {
          switch (_context4.prev = _context4.next) {
            case 0:
            case "end":
              return _context4.stop();
          }
        }
      }, _callee4, this);
    }));

    function translate(_x4) {
      return _translate.apply(this, arguments);
    }

    return translate;
  }()
};
exports.NullL10n = NullL10n;

function getOutputScale(ctx) {
  var devicePixelRatio = window.devicePixelRatio || 1;
  var backingStoreRatio = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
  var pixelRatio = devicePixelRatio / backingStoreRatio;
  return {
    sx: pixelRatio,
    sy: pixelRatio,
    scaled: pixelRatio !== 1
  };
}

function scrollIntoView(element, spot) {
  var skipOverflowHiddenElements = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
  var parent = element.offsetParent;

  if (!parent) {
    console.error('offsetParent is not set -- cannot scroll');
    return;
  }

  var offsetY = element.offsetTop + element.clientTop;
  var offsetX = element.offsetLeft + element.clientLeft;

  while (parent.clientHeight === parent.scrollHeight && parent.clientWidth === parent.scrollWidth || skipOverflowHiddenElements && getComputedStyle(parent).overflow === 'hidden') {
    if (parent.dataset._scaleY) {
      offsetY /= parent.dataset._scaleY;
      offsetX /= parent.dataset._scaleX;
    }

    offsetY += parent.offsetTop;
    offsetX += parent.offsetLeft;
    parent = parent.offsetParent;

    if (!parent) {
      return;
    }
  }

  if (spot) {
    if (spot.top !== undefined) {
      offsetY += spot.top;
    }

    if (spot.left !== undefined) {
      offsetX += spot.left;
      parent.scrollLeft = offsetX;
    }
  }

  parent.scrollTop = offsetY;
}

function watchScroll(viewAreaElement, callback) {
  var debounceScroll = function debounceScroll(evt) {
    if (rAF) {
      return;
    }

    rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
      rAF = null;
      var currentX = viewAreaElement.scrollLeft;
      var lastX = state.lastX;

      if (currentX !== lastX) {
        state.right = currentX > lastX;
      }

      state.lastX = currentX;
      var currentY = viewAreaElement.scrollTop;
      var lastY = state.lastY;

      if (currentY !== lastY) {
        state.down = currentY > lastY;
      }

      state.lastY = currentY;
      callback(state);
    });
  };

  var state = {
    right: true,
    down: true,
    lastX: viewAreaElement.scrollLeft,
    lastY: viewAreaElement.scrollTop,
    _eventHandler: debounceScroll
  };
  var rAF = null;
  viewAreaElement.addEventListener('scroll', debounceScroll, true);
  return state;
}

function parseQueryString(query) {
  var parts = query.split('&');
  var params = Object.create(null);

  for (var i = 0, ii = parts.length; i < ii; ++i) {
    var param = parts[i].split('=');
    var key = param[0].toLowerCase();
    var value = param.length > 1 ? param[1] : null;
    params[decodeURIComponent(key)] = decodeURIComponent(value);
  }

  return params;
}

function binarySearchFirstItem(items, condition) {
  var minIndex = 0;
  var maxIndex = items.length - 1;

  if (items.length === 0 || !condition(items[maxIndex])) {
    return items.length;
  }

  if (condition(items[minIndex])) {
    return minIndex;
  }

  while (minIndex < maxIndex) {
    var currentIndex = minIndex + maxIndex >> 1;
    var currentItem = items[currentIndex];

    if (condition(currentItem)) {
      maxIndex = currentIndex;
    } else {
      minIndex = currentIndex + 1;
    }
  }

  return minIndex;
}

function approximateFraction(x) {
  if (Math.floor(x) === x) {
    return [x, 1];
  }

  var xinv = 1 / x;
  var limit = 8;

  if (xinv > limit) {
    return [1, limit];
  } else if (Math.floor(xinv) === xinv) {
    return [1, xinv];
  }

  var x_ = x > 1 ? xinv : x;
  var a = 0,
      b = 1,
      c = 1,
      d = 1;

  while (true) {
    var p = a + c,
        q = b + d;

    if (q > limit) {
      break;
    }

    if (x_ <= p / q) {
      c = p;
      d = q;
    } else {
      a = p;
      b = q;
    }
  }

  var result;

  if (x_ - a / b < c / d - x_) {
    result = x_ === x ? [a, b] : [b, a];
  } else {
    result = x_ === x ? [c, d] : [d, c];
  }

  return result;
}

function roundToDivide(x, div) {
  var r = x % div;
  return r === 0 ? x : Math.round(x - r + div);
}

function getPageSizeInches(_ref) {
  var view = _ref.view,
      userUnit = _ref.userUnit,
      rotate = _ref.rotate;

  var _view = _slicedToArray(view, 4),
      x1 = _view[0],
      y1 = _view[1],
      x2 = _view[2],
      y2 = _view[3];

  var changeOrientation = rotate % 180 !== 0;
  var width = (x2 - x1) / 72 * userUnit;
  var height = (y2 - y1) / 72 * userUnit;
  return {
    width: changeOrientation ? height : width,
    height: changeOrientation ? width : height
  };
}

function backtrackBeforeAllVisibleElements(index, views, top) {
  if (index < 2) {
    return index;
  }

  var elt = views[index].div;
  var pageTop = elt.offsetTop + elt.clientTop;

  if (pageTop >= top) {
    elt = views[index - 1].div;
    pageTop = elt.offsetTop + elt.clientTop;
  }

  for (var i = index - 2; i >= 0; --i) {
    elt = views[i].div;

    if (elt.offsetTop + elt.clientTop + elt.clientHeight <= pageTop) {
      break;
    }

    index = i;
  }

  return index;
}

function getVisibleElements(scrollEl, views) {
  var sortByVisibility = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
  var horizontal = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
  var top = scrollEl.scrollTop,
      bottom = top + scrollEl.clientHeight;
  var left = scrollEl.scrollLeft,
      right = left + scrollEl.clientWidth;

  function isElementBottomAfterViewTop(view) {
    var element = view.div;
    var elementBottom = element.offsetTop + element.clientTop + element.clientHeight;
    return elementBottom > top;
  }

  function isElementRightAfterViewLeft(view) {
    var element = view.div;
    var elementRight = element.offsetLeft + element.clientLeft + element.clientWidth;
    return elementRight > left;
  }

  var visible = [],
      numViews = views.length;
  var firstVisibleElementInd = numViews === 0 ? 0 : binarySearchFirstItem(views, horizontal ? isElementRightAfterViewLeft : isElementBottomAfterViewTop);

  if (firstVisibleElementInd > 0 && firstVisibleElementInd < numViews && !horizontal) {
    firstVisibleElementInd = backtrackBeforeAllVisibleElements(firstVisibleElementInd, views, top);
  }

  var lastEdge = horizontal ? right : -1;

  for (var i = firstVisibleElementInd; i < numViews; i++) {
    var view = views[i],
        element = view.div;
    var currentWidth = element.offsetLeft + element.clientLeft;
    var currentHeight = element.offsetTop + element.clientTop;
    var viewWidth = element.clientWidth,
        viewHeight = element.clientHeight;
    var viewRight = currentWidth + viewWidth;
    var viewBottom = currentHeight + viewHeight;

    if (lastEdge === -1) {
      if (viewBottom >= bottom) {
        lastEdge = viewBottom;
      }
    } else if ((horizontal ? currentWidth : currentHeight) > lastEdge) {
      break;
    }

    if (viewBottom <= top || currentHeight >= bottom || viewRight <= left || currentWidth >= right) {
      continue;
    }

    var hiddenHeight = Math.max(0, top - currentHeight) + Math.max(0, viewBottom - bottom);
    var hiddenWidth = Math.max(0, left - currentWidth) + Math.max(0, viewRight - right);
    var percent = (viewHeight - hiddenHeight) * (viewWidth - hiddenWidth) * 100 / viewHeight / viewWidth | 0;
    visible.push({
      id: view.id,
      x: currentWidth,
      y: currentHeight,
      view: view,
      percent: percent
    });
  }

  var first = visible[0],
      last = visible[visible.length - 1];

  if (sortByVisibility) {
    visible.sort(function (a, b) {
      var pc = a.percent - b.percent;

      if (Math.abs(pc) > 0.001) {
        return -pc;
      }

      return a.id - b.id;
    });
  }

  return {
    first: first,
    last: last,
    views: visible
  };
}

function noContextMenuHandler(evt) {
  evt.preventDefault();
}

function isDataSchema(url) {
  var i = 0,
      ii = url.length;

  while (i < ii && url[i].trim() === '') {
    i++;
  }

  return url.substring(i, i + 5).toLowerCase() === 'data:';
}

function getPDFFileNameFromURL(url) {
  var defaultFilename = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 'document.pdf';

  if (typeof url !== 'string') {
    return defaultFilename;
  }

  if (isDataSchema(url)) {
    console.warn('getPDFFileNameFromURL: ' + 'ignoring "data:" URL for performance reasons.');
    return defaultFilename;
  }

  var reURI = /^(?:(?:[^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
  var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
  var splitURI = reURI.exec(url);
  var suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3]);

  if (suggestedFilename) {
    suggestedFilename = suggestedFilename[0];

    if (suggestedFilename.includes('%')) {
      try {
        suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0];
      } catch (ex) {}
    }
  }

  return suggestedFilename || defaultFilename;
}

function normalizeWheelEventDelta(evt) {
  var delta = Math.sqrt(evt.deltaX * evt.deltaX + evt.deltaY * evt.deltaY);
  var angle = Math.atan2(evt.deltaY, evt.deltaX);

  if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) {
    delta = -delta;
  }

  var MOUSE_DOM_DELTA_PIXEL_MODE = 0;
  var MOUSE_DOM_DELTA_LINE_MODE = 1;
  var MOUSE_PIXELS_PER_LINE = 30;
  var MOUSE_LINES_PER_PAGE = 30;

  if (evt.deltaMode === MOUSE_DOM_DELTA_PIXEL_MODE) {
    delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE;
  } else if (evt.deltaMode === MOUSE_DOM_DELTA_LINE_MODE) {
    delta /= MOUSE_LINES_PER_PAGE;
  }

  return delta;
}

function isValidRotation(angle) {
  return Number.isInteger(angle) && angle % 90 === 0;
}

function isValidScrollMode(mode) {
  return Number.isInteger(mode) && Object.values(ScrollMode).includes(mode) && mode !== ScrollMode.UNKNOWN;
}

function isValidSpreadMode(mode) {
  return Number.isInteger(mode) && Object.values(SpreadMode).includes(mode) && mode !== SpreadMode.UNKNOWN;
}

function isPortraitOrientation(size) {
  return size.width <= size.height;
}

var WaitOnType = {
  EVENT: 'event',
  TIMEOUT: 'timeout'
};
exports.WaitOnType = WaitOnType;

function waitOnEventOrTimeout(_ref2) {
  var target = _ref2.target,
      name = _ref2.name,
      _ref2$delay = _ref2.delay,
      delay = _ref2$delay === void 0 ? 0 : _ref2$delay;
  return new Promise(function (resolve, reject) {
    if (_typeof(target) !== 'object' || !(name && typeof name === 'string') || !(Number.isInteger(delay) && delay >= 0)) {
      throw new Error('waitOnEventOrTimeout - invalid parameters.');
    }

    function handler(type) {
      if (target instanceof EventBus) {
        target.off(name, eventHandler);
      } else {
        target.removeEventListener(name, eventHandler);
      }

      if (timeout) {
        clearTimeout(timeout);
      }

      resolve(type);
    }

    var eventHandler = handler.bind(null, WaitOnType.EVENT);

    if (target instanceof EventBus) {
      target.on(name, eventHandler);
    } else {
      target.addEventListener(name, eventHandler);
    }

    var timeoutHandler = handler.bind(null, WaitOnType.TIMEOUT);
    var timeout = setTimeout(timeoutHandler, delay);
  });
}

var animationStarted = new Promise(function (resolve) {
  window.requestAnimationFrame(resolve);
});
exports.animationStarted = animationStarted;

var EventBus =
/*#__PURE__*/
function () {
  function EventBus() {
    var _ref3 = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {},
        _ref3$dispatchToDOM = _ref3.dispatchToDOM,
        dispatchToDOM = _ref3$dispatchToDOM === void 0 ? false : _ref3$dispatchToDOM;

    _classCallCheck(this, EventBus);

    this._listeners = Object.create(null);
    this._dispatchToDOM = dispatchToDOM === true;
  }

  _createClass(EventBus, [{
    key: "on",
    value: function on(eventName, listener) {
      var eventListeners = this._listeners[eventName];

      if (!eventListeners) {
        eventListeners = [];
        this._listeners[eventName] = eventListeners;
      }

      eventListeners.push(listener);
    }
  }, {
    key: "off",
    value: function off(eventName, listener) {
      var eventListeners = this._listeners[eventName];
      var i;

      if (!eventListeners || (i = eventListeners.indexOf(listener)) < 0) {
        return;
      }

      eventListeners.splice(i, 1);
    }
  }, {
    key: "dispatch",
    value: function dispatch(eventName) {
      var eventListeners = this._listeners[eventName];

      if (!eventListeners || eventListeners.length === 0) {
        if (this._dispatchToDOM) {
          var _args5 = Array.prototype.slice.call(arguments, 1);

          this._dispatchDOMEvent(eventName, _args5);
        }

        return;
      }

      var args = Array.prototype.slice.call(arguments, 1);
      eventListeners.slice(0).forEach(function (listener) {
        listener.apply(null, args);
      });

      if (this._dispatchToDOM) {
        this._dispatchDOMEvent(eventName, args);
      }
    }
  }, {
    key: "_dispatchDOMEvent",
    value: function _dispatchDOMEvent(eventName) {
      var args = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
      var details = Object.create(null);

      if (args && args.length > 0) {
        var obj = args[0];

        for (var key in obj) {
          var value = obj[key];

          if (key === 'source') {
            if (value === window || value === document) {
              return;
            }

            continue;
          }

          details[key] = value;
        }
      }

      var event = document.createEvent('CustomEvent');
      event.initCustomEvent(eventName, true, true, details);
      document.dispatchEvent(event);
    }
  }]);

  return EventBus;
}();

exports.EventBus = EventBus;
var globalEventBus = null;

function getGlobalEventBus() {
  var dispatchToDOM = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : false;

  if (!globalEventBus) {
    globalEventBus = new EventBus({
      dispatchToDOM: dispatchToDOM
    });
  }

  return globalEventBus;
}

function clamp(v, min, max) {
  return Math.min(Math.max(v, min), max);
}

var ProgressBar =
/*#__PURE__*/
function () {
  function ProgressBar(id) {
    var _ref4 = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {},
        height = _ref4.height,
        width = _ref4.width,
        units = _ref4.units;

    _classCallCheck(this, ProgressBar);

    this.visible = true;
    this.div = document.querySelector(id + ' .progress');
    this.bar = this.div.parentNode;
    this.height = height || 100;
    this.width = width || 100;
    this.units = units || '%';
    this.div.style.height = this.height + this.units;
    this.percent = 0;
  }

  _createClass(ProgressBar, [{
    key: "_updateBar",
    value: function _updateBar() {
      if (this._indeterminate) {
        this.div.classList.add('indeterminate');
        this.div.style.width = this.width + this.units;
        return;
      }

      this.div.classList.remove('indeterminate');
      var progressSize = this.width * this._percent / 100;
      this.div.style.width = progressSize + this.units;
    }
  }, {
    key: "setWidth",
    value: function setWidth(viewer) {
      if (!viewer) {
        return;
      }

      var container = viewer.parentNode;
      var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;

      if (scrollbarWidth > 0) {
        this.bar.setAttribute('style', 'width: calc(100% - ' + scrollbarWidth + 'px);');
      }
    }
  }, {
    key: "hide",
    value: function hide() {
      if (!this.visible) {
        return;
      }

      this.visible = false;
      this.bar.classList.add('hidden');
      document.body.classList.remove('loadingInProgress');
    }
  }, {
    key: "show",
    value: function show() {
      if (this.visible) {
        return;
      }

      this.visible = true;
      document.body.classList.add('loadingInProgress');
      this.bar.classList.remove('hidden');
    }
  }, {
    key: "percent",
    get: function get() {
      return this._percent;
    },
    set: function set(val) {
      this._indeterminate = isNaN(val);
      this._percent = clamp(val, 0, 100);

      this._updateBar();
    }
  }]);

  return ProgressBar;
}();

exports.ProgressBar = ProgressBar;

function moveToEndOfArray(arr, condition) {
  var moved = [],
      len = arr.length;
  var write = 0;

  for (var read = 0; read < len; ++read) {
    if (condition(arr[read])) {
      moved.push(arr[read]);
    } else {
      arr[write] = arr[read];
      ++write;
    }
  }

  for (var _read = 0; write < len; ++_read, ++write) {
    arr[write] = moved[_read];
  }
}

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

"use strict";


module.exports = __w_pdfjs_require__(5);

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

"use strict";


function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

var g = function () {
  return this || (typeof self === "undefined" ? "undefined" : _typeof(self)) === "object" && self;
}() || Function("return this")();

var hadRuntime = g.regeneratorRuntime && Object.getOwnPropertyNames(g).indexOf("regeneratorRuntime") >= 0;
var oldRuntime = hadRuntime && g.regeneratorRuntime;
g.regeneratorRuntime = undefined;
module.exports = __w_pdfjs_require__(6);

if (hadRuntime) {
  g.regeneratorRuntime = oldRuntime;
} else {
  try {
    delete g.regeneratorRuntime;
  } catch (e) {
    g.regeneratorRuntime = undefined;
  }
}

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

"use strict";
/* WEBPACK VAR INJECTION */(function(module) {

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

!function (global) {
  "use strict";

  var Op = Object.prototype;
  var hasOwn = Op.hasOwnProperty;
  var undefined;
  var $Symbol = typeof Symbol === "function" ? Symbol : {};
  var iteratorSymbol = $Symbol.iterator || "@@iterator";
  var asyncIteratorSymbol = $Symbol.asyncIterator || "@@asyncIterator";
  var toStringTagSymbol = $Symbol.toStringTag || "@@toStringTag";
  var inModule = ( false ? undefined : _typeof(module)) === "object";
  var runtime = global.regeneratorRuntime;

  if (runtime) {
    if (inModule) {
      module.exports = runtime;
    }

    return;
  }

  runtime = global.regeneratorRuntime = inModule ? module.exports : {};

  function wrap(innerFn, outerFn, self, tryLocsList) {
    var protoGenerator = outerFn && outerFn.prototype instanceof Generator ? outerFn : Generator;
    var generator = Object.create(protoGenerator.prototype);
    var context = new Context(tryLocsList || []);
    generator._invoke = makeInvokeMethod(innerFn, self, context);
    return generator;
  }

  runtime.wrap = wrap;

  function tryCatch(fn, obj, arg) {
    try {
      return {
        type: "normal",
        arg: fn.call(obj, arg)
      };
    } catch (err) {
      return {
        type: "throw",
        arg: err
      };
    }
  }

  var GenStateSuspendedStart = "suspendedStart";
  var GenStateSuspendedYield = "suspendedYield";
  var GenStateExecuting = "executing";
  var GenStateCompleted = "completed";
  var ContinueSentinel = {};

  function Generator() {}

  function GeneratorFunction() {}

  function GeneratorFunctionPrototype() {}

  var IteratorPrototype = {};

  IteratorPrototype[iteratorSymbol] = function () {
    return this;
  };

  var getProto = Object.getPrototypeOf;
  var NativeIteratorPrototype = getProto && getProto(getProto(values([])));

  if (NativeIteratorPrototype && NativeIteratorPrototype !== Op && hasOwn.call(NativeIteratorPrototype, iteratorSymbol)) {
    IteratorPrototype = NativeIteratorPrototype;
  }

  var Gp = GeneratorFunctionPrototype.prototype = Generator.prototype = Object.create(IteratorPrototype);
  GeneratorFunction.prototype = Gp.constructor = GeneratorFunctionPrototype;
  GeneratorFunctionPrototype.constructor = GeneratorFunction;
  GeneratorFunctionPrototype[toStringTagSymbol] = GeneratorFunction.displayName = "GeneratorFunction";

  function defineIteratorMethods(prototype) {
    ["next", "throw", "return"].forEach(function (method) {
      prototype[method] = function (arg) {
        return this._invoke(method, arg);
      };
    });
  }

  runtime.isGeneratorFunction = function (genFun) {
    var ctor = typeof genFun === "function" && genFun.constructor;
    return ctor ? ctor === GeneratorFunction || (ctor.displayName || ctor.name) === "GeneratorFunction" : false;
  };

  runtime.mark = function (genFun) {
    if (Object.setPrototypeOf) {
      Object.setPrototypeOf(genFun, GeneratorFunctionPrototype);
    } else {
      genFun.__proto__ = GeneratorFunctionPrototype;

      if (!(toStringTagSymbol in genFun)) {
        genFun[toStringTagSymbol] = "GeneratorFunction";
      }
    }

    genFun.prototype = Object.create(Gp);
    return genFun;
  };

  runtime.awrap = function (arg) {
    return {
      __await: arg
    };
  };

  function AsyncIterator(generator) {
    function invoke(method, arg, resolve, reject) {
      var record = tryCatch(generator[method], generator, arg);

      if (record.type === "throw") {
        reject(record.arg);
      } else {
        var result = record.arg;
        var value = result.value;

        if (value && _typeof(value) === "object" && hasOwn.call(value, "__await")) {
          return Promise.resolve(value.__await).then(function (value) {
            invoke("next", value, resolve, reject);
          }, function (err) {
            invoke("throw", err, resolve, reject);
          });
        }

        return Promise.resolve(value).then(function (unwrapped) {
          result.value = unwrapped;
          resolve(result);
        }, function (error) {
          return invoke("throw", error, resolve, reject);
        });
      }
    }

    var previousPromise;

    function enqueue(method, arg) {
      function callInvokeWithMethodAndArg() {
        return new Promise(function (resolve, reject) {
          invoke(method, arg, resolve, reject);
        });
      }

      return previousPromise = previousPromise ? previousPromise.then(callInvokeWithMethodAndArg, callInvokeWithMethodAndArg) : callInvokeWithMethodAndArg();
    }

    this._invoke = enqueue;
  }

  defineIteratorMethods(AsyncIterator.prototype);

  AsyncIterator.prototype[asyncIteratorSymbol] = function () {
    return this;
  };

  runtime.AsyncIterator = AsyncIterator;

  runtime.async = function (innerFn, outerFn, self, tryLocsList) {
    var iter = new AsyncIterator(wrap(innerFn, outerFn, self, tryLocsList));
    return runtime.isGeneratorFunction(outerFn) ? iter : iter.next().then(function (result) {
      return result.done ? result.value : iter.next();
    });
  };

  function makeInvokeMethod(innerFn, self, context) {
    var state = GenStateSuspendedStart;
    return function invoke(method, arg) {
      if (state === GenStateExecuting) {
        throw new Error("Generator is already running");
      }

      if (state === GenStateCompleted) {
        if (method === "throw") {
          throw arg;
        }

        return doneResult();
      }

      context.method = method;
      context.arg = arg;

      while (true) {
        var delegate = context.delegate;

        if (delegate) {
          var delegateResult = maybeInvokeDelegate(delegate, context);

          if (delegateResult) {
            if (delegateResult === ContinueSentinel) continue;
            return delegateResult;
          }
        }

        if (context.method === "next") {
          context.sent = context._sent = context.arg;
        } else if (context.method === "throw") {
          if (state === GenStateSuspendedStart) {
            state = GenStateCompleted;
            throw context.arg;
          }

          context.dispatchException(context.arg);
        } else if (context.method === "return") {
          context.abrupt("return", context.arg);
        }

        state = GenStateExecuting;
        var record = tryCatch(innerFn, self, context);

        if (record.type === "normal") {
          state = context.done ? GenStateCompleted : GenStateSuspendedYield;

          if (record.arg === ContinueSentinel) {
            continue;
          }

          return {
            value: record.arg,
            done: context.done
          };
        } else if (record.type === "throw") {
          state = GenStateCompleted;
          context.method = "throw";
          context.arg = record.arg;
        }
      }
    };
  }

  function maybeInvokeDelegate(delegate, context) {
    var method = delegate.iterator[context.method];

    if (method === undefined) {
      context.delegate = null;

      if (context.method === "throw") {
        if (delegate.iterator.return) {
          context.method = "return";
          context.arg = undefined;
          maybeInvokeDelegate(delegate, context);

          if (context.method === "throw") {
            return ContinueSentinel;
          }
        }

        context.method = "throw";
        context.arg = new TypeError("The iterator does not provide a 'throw' method");
      }

      return ContinueSentinel;
    }

    var record = tryCatch(method, delegate.iterator, context.arg);

    if (record.type === "throw") {
      context.method = "throw";
      context.arg = record.arg;
      context.delegate = null;
      return ContinueSentinel;
    }

    var info = record.arg;

    if (!info) {
      context.method = "throw";
      context.arg = new TypeError("iterator result is not an object");
      context.delegate = null;
      return ContinueSentinel;
    }

    if (info.done) {
      context[delegate.resultName] = info.value;
      context.next = delegate.nextLoc;

      if (context.method !== "return") {
        context.method = "next";
        context.arg = undefined;
      }
    } else {
      return info;
    }

    context.delegate = null;
    return ContinueSentinel;
  }

  defineIteratorMethods(Gp);
  Gp[toStringTagSymbol] = "Generator";

  Gp[iteratorSymbol] = function () {
    return this;
  };

  Gp.toString = function () {
    return "[object Generator]";
  };

  function pushTryEntry(locs) {
    var entry = {
      tryLoc: locs[0]
    };

    if (1 in locs) {
      entry.catchLoc = locs[1];
    }

    if (2 in locs) {
      entry.finallyLoc = locs[2];
      entry.afterLoc = locs[3];
    }

    this.tryEntries.push(entry);
  }

  function resetTryEntry(entry) {
    var record = entry.completion || {};
    record.type = "normal";
    delete record.arg;
    entry.completion = record;
  }

  function Context(tryLocsList) {
    this.tryEntries = [{
      tryLoc: "root"
    }];
    tryLocsList.forEach(pushTryEntry, this);
    this.reset(true);
  }

  runtime.keys = function (object) {
    var keys = [];

    for (var key in object) {
      keys.push(key);
    }

    keys.reverse();
    return function next() {
      while (keys.length) {
        var key = keys.pop();

        if (key in object) {
          next.value = key;
          next.done = false;
          return next;
        }
      }

      next.done = true;
      return next;
    };
  };

  function values(iterable) {
    if (iterable) {
      var iteratorMethod = iterable[iteratorSymbol];

      if (iteratorMethod) {
        return iteratorMethod.call(iterable);
      }

      if (typeof iterable.next === "function") {
        return iterable;
      }

      if (!isNaN(iterable.length)) {
        var i = -1,
            next = function next() {
          while (++i < iterable.length) {
            if (hasOwn.call(iterable, i)) {
              next.value = iterable[i];
              next.done = false;
              return next;
            }
          }

          next.value = undefined;
          next.done = true;
          return next;
        };

        return next.next = next;
      }
    }

    return {
      next: doneResult
    };
  }

  runtime.values = values;

  function doneResult() {
    return {
      value: undefined,
      done: true
    };
  }

  Context.prototype = {
    constructor: Context,
    reset: function reset(skipTempReset) {
      this.prev = 0;
      this.next = 0;
      this.sent = this._sent = undefined;
      this.done = false;
      thi