chore(cleanup): "dist" should never have been committed to git

.gitignore

@@ -7,6 +7,7 @@ lib-cov
 *.pid
 *.[t]gz
 
+dist
 pids
 logs
 results

dist/peerjs.js

@@ -1,10318 +0,0 @@
-// modules are defined as an array
-// [ module function, map of requires ]
-//
-// map of requires is short require name -> numeric require
-//
-// anything defined in a previous bundle is accessed via the
-// orig method which is the require for previous bundles
-parcelRequire = (function (modules, cache, entry, globalName) {
-  // Save the require from previous bundle to this closure if any
-  var previousRequire = typeof parcelRequire === 'function' && parcelRequire;
-  var nodeRequire = typeof require === 'function' && require;
-
-  function newRequire(name, jumped) {
-    if (!cache[name]) {
-      if (!modules[name]) {
-        // if we cannot find the module within our internal map or
-        // cache jump to the current global require ie. the last bundle
-        // that was added to the page.
-        var currentRequire = typeof parcelRequire === 'function' && parcelRequire;
-        if (!jumped && currentRequire) {
-          return currentRequire(name, true);
-        }
-
-        // If there are other bundles on this page the require from the
-        // previous one is saved to 'previousRequire'. Repeat this as
-        // many times as there are bundles until the module is found or
-        // we exhaust the require chain.
-        if (previousRequire) {
-          return previousRequire(name, true);
-        }
-
-        // Try the node require function if it exists.
-        if (nodeRequire && typeof name === 'string') {
-          return nodeRequire(name);
-        }
-
-        var err = new Error('Cannot find module \'' + name + '\'');
-        err.code = 'MODULE_NOT_FOUND';
-        throw err;
-      }
-
-      localRequire.resolve = resolve;
-      localRequire.cache = {};
-
-      var module = cache[name] = new newRequire.Module(name);
-
-      modules[name][0].call(module.exports, localRequire, module, module.exports, this);
-    }
-
-    return cache[name].exports;
-
-    function localRequire(x){
-      return newRequire(localRequire.resolve(x));
-    }
-
-    function resolve(x){
-      return modules[name][1][x] || x;
-    }
-  }
-
-  function Module(moduleName) {
-    this.id = moduleName;
-    this.bundle = newRequire;
-    this.exports = {};
-  }
-
-  newRequire.isParcelRequire = true;
-  newRequire.Module = Module;
-  newRequire.modules = modules;
-  newRequire.cache = cache;
-  newRequire.parent = previousRequire;
-  newRequire.register = function (id, exports) {
-    modules[id] = [function (require, module) {
-      module.exports = exports;
-    }, {}];
-  };
-
-  var error;
-  for (var i = 0; i < entry.length; i++) {
-    try {
-      newRequire(entry[i]);
-    } catch (e) {
-      // Save first error but execute all entries
-      if (!error) {
-        error = e;
-      }
-    }
-  }
-
-  if (entry.length) {
-    // Expose entry point to Node, AMD or browser globals
-    // Based on https://github.com/ForbesLindesay/umd/blob/master/template.js
-    var mainExports = newRequire(entry[entry.length - 1]);
-
-    // CommonJS
-    if (typeof exports === "object" && typeof module !== "undefined") {
-      module.exports = mainExports;
-
-    // RequireJS
-    } else if (typeof define === "function" && define.amd) {
-     define(function () {
-       return mainExports;
-     });
-
-    // <script>
-    } else if (globalName) {
-      this[globalName] = mainExports;
-    }
-  }
-
-  // Override the current require with this new one
-  parcelRequire = newRequire;
-
-  if (error) {
-    // throw error from earlier, _after updating parcelRequire_
-    throw error;
-  }
-
-  return newRequire;
-})({"EgBh":[function(require,module,exports) {
-var binaryFeatures = {};
-binaryFeatures.useBlobBuilder = (function () {
-  try {
-    new Blob([]);
-    return false;
-  } catch (e) {
-    return true;
-  }
-})();
-
-binaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function () {
-  try {
-    return (new Blob([new Uint8Array([])])).size === 0;
-  } catch (e) {
-    return true;
-  }
-})();
-
-module.exports.binaryFeatures = binaryFeatures;
-var BlobBuilder = module.exports.BlobBuilder;
-if (typeof window !== 'undefined') {
-  BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
-    window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
-}
-
-function BufferBuilder () {
-  this._pieces = [];
-  this._parts = [];
-}
-
-BufferBuilder.prototype.append = function (data) {
-  if (typeof data === 'number') {
-    this._pieces.push(data);
-  } else {
-    this.flush();
-    this._parts.push(data);
-  }
-};
-
-BufferBuilder.prototype.flush = function () {
-  if (this._pieces.length > 0) {
-    var buf = new Uint8Array(this._pieces);
-    if (!binaryFeatures.useArrayBufferView) {
-      buf = buf.buffer;
-    }
-    this._parts.push(buf);
-    this._pieces = [];
-  }
-};
-
-BufferBuilder.prototype.getBuffer = function () {
-  this.flush();
-  if (binaryFeatures.useBlobBuilder) {
-    var builder = new BlobBuilder();
-    for (var i = 0, ii = this._parts.length; i < ii; i++) {
-      builder.append(this._parts[i]);
-    }
-    return builder.getBlob();
-  } else {
-    return new Blob(this._parts);
-  }
-};
-
-module.exports.BufferBuilder = BufferBuilder;
-
-},{}],"kdPp":[function(require,module,exports) {
-var BufferBuilder = require('./bufferbuilder').BufferBuilder;
-var binaryFeatures = require('./bufferbuilder').binaryFeatures;
-
-var BinaryPack = {
-  unpack: function (data) {
-    var unpacker = new Unpacker(data);
-    return unpacker.unpack();
-  },
-  pack: function (data) {
-    var packer = new Packer();
-    packer.pack(data);
-    var buffer = packer.getBuffer();
-    return buffer;
-  }
-};
-
-module.exports = BinaryPack;
-
-function Unpacker (data) {
-  // Data is ArrayBuffer
-  this.index = 0;
-  this.dataBuffer = data;
-  this.dataView = new Uint8Array(this.dataBuffer);
-  this.length = this.dataBuffer.byteLength;
-}
-
-Unpacker.prototype.unpack = function () {
-  var type = this.unpack_uint8();
-  if (type < 0x80) {
-    return type;
-  } else if ((type ^ 0xe0) < 0x20) {
-    return (type ^ 0xe0) - 0x20;
-  }
-
-  var size;
-  if ((size = type ^ 0xa0) <= 0x0f) {
-    return this.unpack_raw(size);
-  } else if ((size = type ^ 0xb0) <= 0x0f) {
-    return this.unpack_string(size);
-  } else if ((size = type ^ 0x90) <= 0x0f) {
-    return this.unpack_array(size);
-  } else if ((size = type ^ 0x80) <= 0x0f) {
-    return this.unpack_map(size);
-  }
-
-  switch (type) {
-    case 0xc0:
-      return null;
-    case 0xc1:
-      return undefined;
-    case 0xc2:
-      return false;
-    case 0xc3:
-      return true;
-    case 0xca:
-      return this.unpack_float();
-    case 0xcb:
-      return this.unpack_double();
-    case 0xcc:
-      return this.unpack_uint8();
-    case 0xcd:
-      return this.unpack_uint16();
-    case 0xce:
-      return this.unpack_uint32();
-    case 0xcf:
-      return this.unpack_uint64();
-    case 0xd0:
-      return this.unpack_int8();
-    case 0xd1:
-      return this.unpack_int16();
-    case 0xd2:
-      return this.unpack_int32();
-    case 0xd3:
-      return this.unpack_int64();
-    case 0xd4:
-      return undefined;
-    case 0xd5:
-      return undefined;
-    case 0xd6:
-      return undefined;
-    case 0xd7:
-      return undefined;
-    case 0xd8:
-      size = this.unpack_uint16();
-      return this.unpack_string(size);
-    case 0xd9:
-      size = this.unpack_uint32();
-      return this.unpack_string(size);
-    case 0xda:
-      size = this.unpack_uint16();
-      return this.unpack_raw(size);
-    case 0xdb:
-      size = this.unpack_uint32();
-      return this.unpack_raw(size);
-    case 0xdc:
-      size = this.unpack_uint16();
-      return this.unpack_array(size);
-    case 0xdd:
-      size = this.unpack_uint32();
-      return this.unpack_array(size);
-    case 0xde:
-      size = this.unpack_uint16();
-      return this.unpack_map(size);
-    case 0xdf:
-      size = this.unpack_uint32();
-      return this.unpack_map(size);
-  }
-};
-
-Unpacker.prototype.unpack_uint8 = function () {
-  var byte = this.dataView[this.index] & 0xff;
-  this.index++;
-  return byte;
-};
-
-Unpacker.prototype.unpack_uint16 = function () {
-  var bytes = this.read(2);
-  var uint16 =
-    ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);
-  this.index += 2;
-  return uint16;
-};
-
-Unpacker.prototype.unpack_uint32 = function () {
-  var bytes = this.read(4);
-  var uint32 =
-    ((bytes[0] * 256 +
-      bytes[1]) * 256 +
-      bytes[2]) * 256 +
-    bytes[3];
-  this.index += 4;
-  return uint32;
-};
-
-Unpacker.prototype.unpack_uint64 = function () {
-  var bytes = this.read(8);
-  var uint64 =
-    ((((((bytes[0] * 256 +
-      bytes[1]) * 256 +
-      bytes[2]) * 256 +
-      bytes[3]) * 256 +
-      bytes[4]) * 256 +
-      bytes[5]) * 256 +
-      bytes[6]) * 256 +
-    bytes[7];
-  this.index += 8;
-  return uint64;
-};
-
-Unpacker.prototype.unpack_int8 = function () {
-  var uint8 = this.unpack_uint8();
-  return (uint8 < 0x80) ? uint8 : uint8 - (1 << 8);
-};
-
-Unpacker.prototype.unpack_int16 = function () {
-  var uint16 = this.unpack_uint16();
-  return (uint16 < 0x8000) ? uint16 : uint16 - (1 << 16);
-};
-
-Unpacker.prototype.unpack_int32 = function () {
-  var uint32 = this.unpack_uint32();
-  return (uint32 < Math.pow(2, 31)) ? uint32
-    : uint32 - Math.pow(2, 32);
-};
-
-Unpacker.prototype.unpack_int64 = function () {
-  var uint64 = this.unpack_uint64();
-  return (uint64 < Math.pow(2, 63)) ? uint64
-    : uint64 - Math.pow(2, 64);
-};
-
-Unpacker.prototype.unpack_raw = function (size) {
-  if (this.length < this.index + size) {
-    throw new Error('BinaryPackFailure: index is out of range' +
-      ' ' + this.index + ' ' + size + ' ' + this.length);
-  }
-  var buf = this.dataBuffer.slice(this.index, this.index + size);
-  this.index += size;
-
-  // buf = util.bufferToString(buf);
-
-  return buf;
-};
-
-Unpacker.prototype.unpack_string = function (size) {
-  var bytes = this.read(size);
-  var i = 0;
-  var str = '';
-  var c;
-  var code;
-
-  while (i < size) {
-    c = bytes[i];
-    if (c < 128) {
-      str += String.fromCharCode(c);
-      i++;
-    } else if ((c ^ 0xc0) < 32) {
-      code = ((c ^ 0xc0) << 6) | (bytes[i + 1] & 63);
-      str += String.fromCharCode(code);
-      i += 2;
-    } else {
-      code = ((c & 15) << 12) | ((bytes[i + 1] & 63) << 6) |
-        (bytes[i + 2] & 63);
-      str += String.fromCharCode(code);
-      i += 3;
-    }
-  }
-
-  this.index += size;
-  return str;
-};
-
-Unpacker.prototype.unpack_array = function (size) {
-  var objects = new Array(size);
-  for (var i = 0; i < size; i++) {
-    objects[i] = this.unpack();
-  }
-  return objects;
-};
-
-Unpacker.prototype.unpack_map = function (size) {
-  var map = {};
-  for (var i = 0; i < size; i++) {
-    var key = this.unpack();
-    var value = this.unpack();
-    map[key] = value;
-  }
-  return map;
-};
-
-Unpacker.prototype.unpack_float = function () {
-  var uint32 = this.unpack_uint32();
-  var sign = uint32 >> 31;
-  var exp = ((uint32 >> 23) & 0xff) - 127;
-  var fraction = (uint32 & 0x7fffff) | 0x800000;
-  return (sign === 0 ? 1 : -1) *
-    fraction * Math.pow(2, exp - 23);
-};
-
-Unpacker.prototype.unpack_double = function () {
-  var h32 = this.unpack_uint32();
-  var l32 = this.unpack_uint32();
-  var sign = h32 >> 31;
-  var exp = ((h32 >> 20) & 0x7ff) - 1023;
-  var hfrac = (h32 & 0xfffff) | 0x100000;
-  var frac = hfrac * Math.pow(2, exp - 20) +
-    l32 * Math.pow(2, exp - 52);
-  return (sign === 0 ? 1 : -1) * frac;
-};
-
-Unpacker.prototype.read = function (length) {
-  var j = this.index;
-  if (j + length <= this.length) {
-    return this.dataView.subarray(j, j + length);
-  } else {
-    throw new Error('BinaryPackFailure: read index out of range');
-  }
-};
-
-function Packer () {
-  this.bufferBuilder = new BufferBuilder();
-}
-
-Packer.prototype.getBuffer = function () {
-  return this.bufferBuilder.getBuffer();
-};
-
-Packer.prototype.pack = function (value) {
-  var type = typeof (value);
-  if (type === 'string') {
-    this.pack_string(value);
-  } else if (type === 'number') {
-    if (Math.floor(value) === value) {
-      this.pack_integer(value);
-    } else {
-      this.pack_double(value);
-    }
-  } else if (type === 'boolean') {
-    if (value === true) {
-      this.bufferBuilder.append(0xc3);
-    } else if (value === false) {
-      this.bufferBuilder.append(0xc2);
-    }
-  } else if (type === 'undefined') {
-    this.bufferBuilder.append(0xc0);
-  } else if (type === 'object') {
-    if (value === null) {
-      this.bufferBuilder.append(0xc0);
-    } else {
-      var constructor = value.constructor;
-      if (constructor == Array) {
-        this.pack_array(value);
-      } else if (constructor == Blob || constructor == File || value instanceof Blob || value instanceof File) {
-        this.pack_bin(value);
-      } else if (constructor == ArrayBuffer) {
-        if (binaryFeatures.useArrayBufferView) {
-          this.pack_bin(new Uint8Array(value));
-        } else {
-          this.pack_bin(value);
-        }
-      } else if ('BYTES_PER_ELEMENT' in value) {
-        if (binaryFeatures.useArrayBufferView) {
-          this.pack_bin(new Uint8Array(value.buffer));
-        } else {
-          this.pack_bin(value.buffer);
-        }
-      } else if ((constructor == Object) || (constructor.toString().startsWith('class'))) {
-        this.pack_object(value);
-      } else if (constructor == Date) {
-        this.pack_string(value.toString());
-      } else if (typeof value.toBinaryPack === 'function') {
-        this.bufferBuilder.append(value.toBinaryPack());
-      } else {
-        throw new Error('Type "' + constructor.toString() + '" not yet supported');
-      }
-    }
-  } else {
-    throw new Error('Type "' + type + '" not yet supported');
-  }
-  this.bufferBuilder.flush();
-};
-
-Packer.prototype.pack_bin = function (blob) {
-  var length = blob.length || blob.byteLength || blob.size;
-  if (length <= 0x0f) {
-    this.pack_uint8(0xa0 + length);
-  } else if (length <= 0xffff) {
-    this.bufferBuilder.append(0xda);
-    this.pack_uint16(length);
-  } else if (length <= 0xffffffff) {
-    this.bufferBuilder.append(0xdb);
-    this.pack_uint32(length);
-  } else {
-    throw new Error('Invalid length');
-  }
-  this.bufferBuilder.append(blob);
-};
-
-Packer.prototype.pack_string = function (str) {
-  var length = utf8Length(str);
-
-  if (length <= 0x0f) {
-    this.pack_uint8(0xb0 + length);
-  } else if (length <= 0xffff) {
-    this.bufferBuilder.append(0xd8);
-    this.pack_uint16(length);
-  } else if (length <= 0xffffffff) {
-    this.bufferBuilder.append(0xd9);
-    this.pack_uint32(length);
-  } else {
-    throw new Error('Invalid length');
-  }
-  this.bufferBuilder.append(str);
-};
-
-Packer.prototype.pack_array = function (ary) {
-  var length = ary.length;
-  if (length <= 0x0f) {
-    this.pack_uint8(0x90 + length);
-  } else if (length <= 0xffff) {
-    this.bufferBuilder.append(0xdc);
-    this.pack_uint16(length);
-  } else if (length <= 0xffffffff) {
-    this.bufferBuilder.append(0xdd);
-    this.pack_uint32(length);
-  } else {
-    throw new Error('Invalid length');
-  }
-  for (var i = 0; i < length; i++) {
-    this.pack(ary[i]);
-  }
-};
-
-Packer.prototype.pack_integer = function (num) {
-  if (num >= -0x20 && num <= 0x7f) {
-    this.bufferBuilder.append(num & 0xff);
-  } else if (num >= 0x00 && num <= 0xff) {
-    this.bufferBuilder.append(0xcc);
-    this.pack_uint8(num);
-  } else if (num >= -0x80 && num <= 0x7f) {
-    this.bufferBuilder.append(0xd0);
-    this.pack_int8(num);
-  } else if (num >= 0x0000 && num <= 0xffff) {
-    this.bufferBuilder.append(0xcd);
-    this.pack_uint16(num);
-  } else if (num >= -0x8000 && num <= 0x7fff) {
-    this.bufferBuilder.append(0xd1);
-    this.pack_int16(num);
-  } else if (num >= 0x00000000 && num <= 0xffffffff) {
-    this.bufferBuilder.append(0xce);
-    this.pack_uint32(num);
-  } else if (num >= -0x80000000 && num <= 0x7fffffff) {
-    this.bufferBuilder.append(0xd2);
-    this.pack_int32(num);
-  } else if (num >= -0x8000000000000000 && num <= 0x7FFFFFFFFFFFFFFF) {
-    this.bufferBuilder.append(0xd3);
-    this.pack_int64(num);
-  } else if (num >= 0x0000000000000000 && num <= 0xFFFFFFFFFFFFFFFF) {
-    this.bufferBuilder.append(0xcf);
-    this.pack_uint64(num);
-  } else {
-    throw new Error('Invalid integer');
-  }
-};
-
-Packer.prototype.pack_double = function (num) {
-  var sign = 0;
-  if (num < 0) {
-    sign = 1;
-    num = -num;
-  }
-  var exp = Math.floor(Math.log(num) / Math.LN2);
-  var frac0 = num / Math.pow(2, exp) - 1;
-  var frac1 = Math.floor(frac0 * Math.pow(2, 52));
-  var b32 = Math.pow(2, 32);
-  var h32 = (sign << 31) | ((exp + 1023) << 20) |
-    (frac1 / b32) & 0x0fffff;
-  var l32 = frac1 % b32;
-  this.bufferBuilder.append(0xcb);
-  this.pack_int32(h32);
-  this.pack_int32(l32);
-};
-
-Packer.prototype.pack_object = function (obj) {
-  var keys = Object.keys(obj);
-  var length = keys.length;
-  if (length <= 0x0f) {
-    this.pack_uint8(0x80 + length);
-  } else if (length <= 0xffff) {
-    this.bufferBuilder.append(0xde);
-    this.pack_uint16(length);
-  } else if (length <= 0xffffffff) {
-    this.bufferBuilder.append(0xdf);
-    this.pack_uint32(length);
-  } else {
-    throw new Error('Invalid length');
-  }
-  for (var prop in obj) {
-    if (obj.hasOwnProperty(prop)) {
-      this.pack(prop);
-      this.pack(obj[prop]);
-    }
-  }
-};
-
-Packer.prototype.pack_uint8 = function (num) {
-  this.bufferBuilder.append(num);
-};
-
-Packer.prototype.pack_uint16 = function (num) {
-  this.bufferBuilder.append(num >> 8);
-  this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_uint32 = function (num) {
-  var n = num & 0xffffffff;
-  this.bufferBuilder.append((n & 0xff000000) >>> 24);
-  this.bufferBuilder.append((n & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((n & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((n & 0x000000ff));
-};
-
-Packer.prototype.pack_uint64 = function (num) {
-  var high = num / Math.pow(2, 32);
-  var low = num % Math.pow(2, 32);
-  this.bufferBuilder.append((high & 0xff000000) >>> 24);
-  this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((high & 0x000000ff));
-  this.bufferBuilder.append((low & 0xff000000) >>> 24);
-  this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((low & 0x000000ff));
-};
-
-Packer.prototype.pack_int8 = function (num) {
-  this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_int16 = function (num) {
-  this.bufferBuilder.append((num & 0xff00) >> 8);
-  this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_int32 = function (num) {
-  this.bufferBuilder.append((num >>> 24) & 0xff);
-  this.bufferBuilder.append((num & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((num & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((num & 0x000000ff));
-};
-
-Packer.prototype.pack_int64 = function (num) {
-  var high = Math.floor(num / Math.pow(2, 32));
-  var low = num % Math.pow(2, 32);
-  this.bufferBuilder.append((high & 0xff000000) >>> 24);
-  this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((high & 0x000000ff));
-  this.bufferBuilder.append((low & 0xff000000) >>> 24);
-  this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
-  this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
-  this.bufferBuilder.append((low & 0x000000ff));
-};
-
-function _utf8Replace (m) {
-  var code = m.charCodeAt(0);
-
-  if (code <= 0x7ff) return '00';
-  if (code <= 0xffff) return '000';
-  if (code <= 0x1fffff) return '0000';
-  if (code <= 0x3ffffff) return '00000';
-  return '000000';
-}
-
-function utf8Length (str) {
-  if (str.length > 600) {
-    // Blob method faster for large strings
-    return (new Blob([str])).size;
-  } else {
-    return str.replace(/[^\u0000-\u007F]/g, _utf8Replace).length;
-  }
-}
-
-},{"./bufferbuilder":"EgBh"}],"iSxC":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.extractVersion = extractVersion;
-exports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;
-exports.disableLog = disableLog;
-exports.disableWarnings = disableWarnings;
-exports.log = log;
-exports.deprecated = deprecated;
-exports.detectBrowser = detectBrowser;
-exports.compactObject = compactObject;
-exports.walkStats = walkStats;
-exports.filterStats = filterStats;
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-var logDisabled_ = true;
-var deprecationWarnings_ = true;
-/**
- * Extract browser version out of the provided user agent string.
- *
- * @param {!string} uastring userAgent string.
- * @param {!string} expr Regular expression used as match criteria.
- * @param {!number} pos position in the version string to be returned.
- * @return {!number} browser version.
- */
-
-function extractVersion(uastring, expr, pos) {
-  var match = uastring.match(expr);
-  return match && match.length >= pos && parseInt(match[pos], 10);
-} // Wraps the peerconnection event eventNameToWrap in a function
-// which returns the modified event object (or false to prevent
-// the event).
-
-
-function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {
-  if (!window.RTCPeerConnection) {
-    return;
-  }
-
-  var proto = window.RTCPeerConnection.prototype;
-  var nativeAddEventListener = proto.addEventListener;
-
-  proto.addEventListener = function (nativeEventName, cb) {
-    if (nativeEventName !== eventNameToWrap) {
-      return nativeAddEventListener.apply(this, arguments);
-    }
-
-    var wrappedCallback = function (e) {
-      var modifiedEvent = wrapper(e);
-
-      if (modifiedEvent) {
-        if (cb.handleEvent) {
-          cb.handleEvent(modifiedEvent);
-        } else {
-          cb(modifiedEvent);
-        }
-      }
-    };
-
-    this._eventMap = this._eventMap || {};
-
-    if (!this._eventMap[eventNameToWrap]) {
-      this._eventMap[eventNameToWrap] = new Map();
-    }
-
-    this._eventMap[eventNameToWrap].set(cb, wrappedCallback);
-
-    return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);
-  };
-
-  var nativeRemoveEventListener = proto.removeEventListener;
-
-  proto.removeEventListener = function (nativeEventName, cb) {
-    if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) {
-      return nativeRemoveEventListener.apply(this, arguments);
-    }
-
-    if (!this._eventMap[eventNameToWrap].has(cb)) {
-      return nativeRemoveEventListener.apply(this, arguments);
-    }
-
-    var unwrappedCb = this._eventMap[eventNameToWrap].get(cb);
-
-    this._eventMap[eventNameToWrap].delete(cb);
-
-    if (this._eventMap[eventNameToWrap].size === 0) {
-      delete this._eventMap[eventNameToWrap];
-    }
-
-    if (Object.keys(this._eventMap).length === 0) {
-      delete this._eventMap;
-    }
-
-    return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);
-  };
-
-  Object.defineProperty(proto, 'on' + eventNameToWrap, {
-    get: function () {
-      return this['_on' + eventNameToWrap];
-    },
-    set: function (cb) {
-      if (this['_on' + eventNameToWrap]) {
-        this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);
-        delete this['_on' + eventNameToWrap];
-      }
-
-      if (cb) {
-        this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);
-      }
-    },
-    enumerable: true,
-    configurable: true
-  });
-}
-
-function disableLog(bool) {
-  if (typeof bool !== 'boolean') {
-    return new Error('Argument type: ' + _typeof(bool) + '. Please use a boolean.');
-  }
-
-  logDisabled_ = bool;
-  return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';
-}
-/**
- * Disable or enable deprecation warnings
- * @param {!boolean} bool set to true to disable warnings.
- */
-
-
-function disableWarnings(bool) {
-  if (typeof bool !== 'boolean') {
-    return new Error('Argument type: ' + _typeof(bool) + '. Please use a boolean.');
-  }
-
-  deprecationWarnings_ = !bool;
-  return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');
-}
-
-function log() {
-  if ((typeof window === "undefined" ? "undefined" : _typeof(window)) === 'object') {
-    if (logDisabled_) {
-      return;
-    }
-
-    if (typeof console !== 'undefined' && typeof console.log === 'function') {
-      console.log.apply(console, arguments);
-    }
-  }
-}
-/**
- * Shows a deprecation warning suggesting the modern and spec-compatible API.
- */
-
-
-function deprecated(oldMethod, newMethod) {
-  if (!deprecationWarnings_) {
-    return;
-  }
-
-  console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');
-}
-/**
- * Browser detector.
- *
- * @return {object} result containing browser and version
- *     properties.
- */
-
-
-function detectBrowser(window) {
-  // Returned result object.
-  var result = {
-    browser: null,
-    version: null
-  }; // Fail early if it's not a browser
-
-  if (typeof window === 'undefined' || !window.navigator) {
-    result.browser = 'Not a browser.';
-    return result;
-  }
-
-  var {
-    navigator: navigator
-  } = window;
-
-  if (navigator.mozGetUserMedia) {
-    // Firefox.
-    result.browser = 'firefox';
-    result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1);
-  } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {
-    // Chrome, Chromium, Webview, Opera.
-    // Version matches Chrome/WebRTC version.
-    // Chrome 74 removed webkitGetUserMedia on http as well so we need the
-    // more complicated fallback to webkitRTCPeerConnection.
-    result.browser = 'chrome';
-    result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2);
-  } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) {
-    // Edge.
-    result.browser = 'edge';
-    result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2);
-  } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) {
-    // Safari.
-    result.browser = 'safari';
-    result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1);
-    result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;
-  } else {
-    // Default fallthrough: not supported.
-    result.browser = 'Not a supported browser.';
-    return result;
-  }
-
-  return result;
-}
-/**
- * Checks if something is an object.
- *
- * @param {*} val The something you want to check.
- * @return true if val is an object, false otherwise.
- */
-
-
-function isObject(val) {
-  return Object.prototype.toString.call(val) === '[object Object]';
-}
-/**
- * Remove all empty objects and undefined values
- * from a nested object -- an enhanced and vanilla version
- * of Lodash's `compact`.
- */
-
-
-function compactObject(data) {
-  if (!isObject(data)) {
-    return data;
-  }
-
-  return Object.keys(data).reduce(function (accumulator, key) {
-    var isObj = isObject(data[key]);
-    var value = isObj ? compactObject(data[key]) : data[key];
-    var isEmptyObject = isObj && !Object.keys(value).length;
-
-    if (value === undefined || isEmptyObject) {
-      return accumulator;
-    }
-
-    return Object.assign(accumulator, _defineProperty({}, key, value));
-  }, {});
-}
-/* iterates the stats graph recursively. */
-
-
-function walkStats(stats, base, resultSet) {
-  if (!base || resultSet.has(base.id)) {
-    return;
-  }
-
-  resultSet.set(base.id, base);
-  Object.keys(base).forEach(function (name) {
-    if (name.endsWith('Id')) {
-      walkStats(stats, stats.get(base[name]), resultSet);
-    } else if (name.endsWith('Ids')) {
-      base[name].forEach(function (id) {
-        walkStats(stats, stats.get(id), resultSet);
-      });
-    }
-  });
-}
-/* filter getStats for a sender/receiver track. */
-
-
-function filterStats(result, track, outbound) {
-  var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';
-  var filteredResult = new Map();
-
-  if (track === null) {
-    return filteredResult;
-  }
-
-  var trackStats = [];
-  result.forEach(function (value) {
-    if (value.type === 'track' && value.trackIdentifier === track.id) {
-      trackStats.push(value);
-    }
-  });
-  trackStats.forEach(function (trackStat) {
-    result.forEach(function (stats) {
-      if (stats.type === streamStatsType && stats.trackId === trackStat.id) {
-        walkStats(result, stats, filteredResult);
-      }
-    });
-  });
-  return filteredResult;
-}
-},{}],"s6SN":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-var utils = _interopRequireWildcard(require("../utils.js"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-var logging = utils.log;
-
-function shimGetUserMedia(window, browserDetails) {
-  var navigator = window && window.navigator;
-
-  if (!navigator.mediaDevices) {
-    return;
-  }
-
-  var constraintsToChrome_ = function (c) {
-    if (_typeof(c) !== 'object' || c.mandatory || c.optional) {
-      return c;
-    }
-
-    var cc = {};
-    Object.keys(c).forEach(function (key) {
-      if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
-        return;
-      }
-
-      var r = _typeof(c[key]) === 'object' ? c[key] : {
-        ideal: c[key]
-      };
-
-      if (r.exact !== undefined && typeof r.exact === 'number') {
-        r.min = r.max = r.exact;
-      }
-
-      var oldname_ = function (prefix, name) {
-        if (prefix) {
-          return prefix + name.charAt(0).toUpperCase() + name.slice(1);
-        }
-
-        return name === 'deviceId' ? 'sourceId' : name;
-      };
-
-      if (r.ideal !== undefined) {
-        cc.optional = cc.optional || [];
-        var oc = {};
-
-        if (typeof r.ideal === 'number') {
-          oc[oldname_('min', key)] = r.ideal;
-          cc.optional.push(oc);
-          oc = {};
-          oc[oldname_('max', key)] = r.ideal;
-          cc.optional.push(oc);
-        } else {
-          oc[oldname_('', key)] = r.ideal;
-          cc.optional.push(oc);
-        }
-      }
-
-      if (r.exact !== undefined && typeof r.exact !== 'number') {
-        cc.mandatory = cc.mandatory || {};
-        cc.mandatory[oldname_('', key)] = r.exact;
-      } else {
-        ['min', 'max'].forEach(function (mix) {
-          if (r[mix] !== undefined) {
-            cc.mandatory = cc.mandatory || {};
-            cc.mandatory[oldname_(mix, key)] = r[mix];
-          }
-        });
-      }
-    });
-
-    if (c.advanced) {
-      cc.optional = (cc.optional || []).concat(c.advanced);
-    }
-
-    return cc;
-  };
-
-  var shimConstraints_ = function (constraints, func) {
-    if (browserDetails.version >= 61) {
-      return func(constraints);
-    }
-
-    constraints = JSON.parse(JSON.stringify(constraints));
-
-    if (constraints && _typeof(constraints.audio) === 'object') {
-      var remap = function (obj, a, b) {
-        if (a in obj && !(b in obj)) {
-          obj[b] = obj[a];
-          delete obj[a];
-        }
-      };
-
-      constraints = JSON.parse(JSON.stringify(constraints));
-      remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
-      remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
-      constraints.audio = constraintsToChrome_(constraints.audio);
-    }
-
-    if (constraints && _typeof(constraints.video) === 'object') {
-      // Shim facingMode for mobile & surface pro.
-      var face = constraints.video.facingMode;
-      face = face && (_typeof(face) === 'object' ? face : {
-        ideal: face
-      });
-      var getSupportedFacingModeLies = browserDetails.version < 66;
-
-      if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {
-        delete constraints.video.facingMode;
-        var matches;
-
-        if (face.exact === 'environment' || face.ideal === 'environment') {
-          matches = ['back', 'rear'];
-        } else if (face.exact === 'user' || face.ideal === 'user') {
-          matches = ['front'];
-        }
-
-        if (matches) {
-          // Look for matches in label, or use last cam for back (typical).
-          return navigator.mediaDevices.enumerateDevices().then(function (devices) {
-            devices = devices.filter(function (d) {
-              return d.kind === 'videoinput';
-            });
-            var dev = devices.find(function (d) {
-              return matches.some(function (match) {
-                return d.label.toLowerCase().includes(match);
-              });
-            });
-
-            if (!dev && devices.length && matches.includes('back')) {
-              dev = devices[devices.length - 1]; // more likely the back cam
-            }
-
-            if (dev) {
-              constraints.video.deviceId = face.exact ? {
-                exact: dev.deviceId
-              } : {
-                ideal: dev.deviceId
-              };
-            }
-
-            constraints.video = constraintsToChrome_(constraints.video);
-            logging('chrome: ' + JSON.stringify(constraints));
-            return func(constraints);
-          });
-        }
-      }
-
-      constraints.video = constraintsToChrome_(constraints.video);
-    }
-
-    logging('chrome: ' + JSON.stringify(constraints));
-    return func(constraints);
-  };
-
-  var shimError_ = function (e) {
-    if (browserDetails.version >= 64) {
-      return e;
-    }
-
-    return {
-      name: {
-        PermissionDeniedError: 'NotAllowedError',
-        PermissionDismissedError: 'NotAllowedError',
-        InvalidStateError: 'NotAllowedError',
-        DevicesNotFoundError: 'NotFoundError',
-        ConstraintNotSatisfiedError: 'OverconstrainedError',
-        TrackStartError: 'NotReadableError',
-        MediaDeviceFailedDueToShutdown: 'NotAllowedError',
-        MediaDeviceKillSwitchOn: 'NotAllowedError',
-        TabCaptureError: 'AbortError',
-        ScreenCaptureError: 'AbortError',
-        DeviceCaptureError: 'AbortError'
-      }[e.name] || e.name,
-      message: e.message,
-      constraint: e.constraint || e.constraintName,
-      toString: function () {
-        return this.name + (this.message && ': ') + this.message;
-      }
-    };
-  };
-
-  var getUserMedia_ = function (constraints, onSuccess, onError) {
-    shimConstraints_(constraints, function (c) {
-      navigator.webkitGetUserMedia(c, onSuccess, function (e) {
-        if (onError) {
-          onError(shimError_(e));
-        }
-      });
-    });
-  };
-
-  navigator.getUserMedia = getUserMedia_.bind(navigator); // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia
-  // function which returns a Promise, it does not accept spec-style
-  // constraints.
-
-  if (navigator.mediaDevices.getUserMedia) {
-    var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
-    navigator.mediaDevices.getUserMedia = function (cs) {
-      return shimConstraints_(cs, function (c) {
-        return origGetUserMedia(c).then(function (stream) {
-          if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {
-            stream.getTracks().forEach(function (track) {
-              track.stop();
-            });
-            throw new DOMException('', 'NotFoundError');
-          }
-
-          return stream;
-        }, function (e) {
-          return Promise.reject(shimError_(e));
-        });
-      });
-    };
-  }
-}
-},{"../utils.js":"iSxC"}],"VHa8":[function(require,module,exports) {
-/*
- *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window, getSourceId) {
-  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
-    return;
-  }
-
-  if (!window.navigator.mediaDevices) {
-    return;
-  } // getSourceId is a function that returns a promise resolving with
-  // the sourceId of the screen/window/tab to be shared.
-
-
-  if (typeof getSourceId !== 'function') {
-    console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');
-    return;
-  }
-
-  window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
-    return getSourceId(constraints).then(function (sourceId) {
-      var widthSpecified = constraints.video && constraints.video.width;
-      var heightSpecified = constraints.video && constraints.video.height;
-      var frameRateSpecified = constraints.video && constraints.video.frameRate;
-      constraints.video = {
-        mandatory: {
-          chromeMediaSource: 'desktop',
-          chromeMediaSourceId: sourceId,
-          maxFrameRate: frameRateSpecified || 3
-        }
-      };
-
-      if (widthSpecified) {
-        constraints.video.mandatory.maxWidth = widthSpecified;
-      }
-
-      if (heightSpecified) {
-        constraints.video.mandatory.maxHeight = heightSpecified;
-      }
-
-      return window.navigator.mediaDevices.getUserMedia(constraints);
-    });
-  };
-}
-},{}],"uI5X":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimMediaStream = shimMediaStream;
-exports.shimOnTrack = shimOnTrack;
-exports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;
-exports.shimGetStats = shimGetStats;
-exports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;
-exports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;
-exports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;
-exports.shimPeerConnection = shimPeerConnection;
-exports.fixNegotiationNeeded = fixNegotiationNeeded;
-Object.defineProperty(exports, "shimGetUserMedia", {
-  enumerable: true,
-  get: function () {
-    return _getusermedia.shimGetUserMedia;
-  }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
-  enumerable: true,
-  get: function () {
-    return _getdisplaymedia.shimGetDisplayMedia;
-  }
-});
-
-var utils = _interopRequireWildcard(require("../utils.js"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimMediaStream(window) {
-  window.MediaStream = window.MediaStream || window.webkitMediaStream;
-}
-
-function shimOnTrack(window) {
-  if (_typeof(window) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {
-    Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
-      get: function () {
-        return this._ontrack;
-      },
-      set: function (f) {
-        if (this._ontrack) {
-          this.removeEventListener('track', this._ontrack);
-        }
-
-        this.addEventListener('track', this._ontrack = f);
-      },
-      enumerable: true,
-      configurable: true
-    });
-    var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
-    window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
-      var _this = this;
-
-      if (!this._ontrackpoly) {
-        this._ontrackpoly = function (e) {
-          // onaddstream does not fire when a track is added to an existing
-          // stream. But stream.onaddtrack is implemented so we use that.
-          e.stream.addEventListener('addtrack', function (te) {
-            var receiver;
-
-            if (window.RTCPeerConnection.prototype.getReceivers) {
-              receiver = _this.getReceivers().find(function (r) {
-                return r.track && r.track.id === te.track.id;
-              });
-            } else {
-              receiver = {
-                track: te.track
-              };
-            }
-
-            var event = new Event('track');
-            event.track = te.track;
-            event.receiver = receiver;
-            event.transceiver = {
-              receiver: receiver
-            };
-            event.streams = [e.stream];
-
-            _this.dispatchEvent(event);
-          });
-          e.stream.getTracks().forEach(function (track) {
-            var receiver;
-
-            if (window.RTCPeerConnection.prototype.getReceivers) {
-              receiver = _this.getReceivers().find(function (r) {
-                return r.track && r.track.id === track.id;
-              });
-            } else {
-              receiver = {
-                track: track
-              };
-            }
-
-            var event = new Event('track');
-            event.track = track;
-            event.receiver = receiver;
-            event.transceiver = {
-              receiver: receiver
-            };
-            event.streams = [e.stream];
-
-            _this.dispatchEvent(event);
-          });
-        };
-
-        this.addEventListener('addstream', this._ontrackpoly);
-      }
-
-      return origSetRemoteDescription.apply(this, arguments);
-    };
-  } else {
-    // even if RTCRtpTransceiver is in window, it is only used and
-    // emitted in unified-plan. Unfortunately this means we need
-    // to unconditionally wrap the event.
-    utils.wrapPeerConnectionEvent(window, 'track', function (e) {
-      if (!e.transceiver) {
-        Object.defineProperty(e, 'transceiver', {
-          value: {
-            receiver: e.receiver
-          }
-        });
-      }
-
-      return e;
-    });
-  }
-}
-
-function shimGetSendersWithDtmf(window) {
-  // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
-  if (_typeof(window) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {
-    var shimSenderWithDtmf = function (pc, track) {
-      return {
-        track: track,
-
-        get dtmf() {
-          if (this._dtmf === undefined) {
-            if (track.kind === 'audio') {
-              this._dtmf = pc.createDTMFSender(track);
-            } else {
-              this._dtmf = null;
-            }
-          }
-
-          return this._dtmf;
-        },
-
-        _pc: pc
-      };
-    }; // augment addTrack when getSenders is not available.
-
-
-    if (!window.RTCPeerConnection.prototype.getSenders) {
-      window.RTCPeerConnection.prototype.getSenders = function getSenders() {
-        this._senders = this._senders || [];
-        return this._senders.slice(); // return a copy of the internal state.
-      };
-
-      var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
-      window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
-        var sender = origAddTrack.apply(this, arguments);
-
-        if (!sender) {
-          sender = shimSenderWithDtmf(this, track);
-
-          this._senders.push(sender);
-        }
-
-        return sender;
-      };
-
-      var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
-
-      window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
-        origRemoveTrack.apply(this, arguments);
-
-        var idx = this._senders.indexOf(sender);
-
-        if (idx !== -1) {
-          this._senders.splice(idx, 1);
-        }
-      };
-    }
-
-    var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
-    window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
-      var _this2 = this;
-
-      this._senders = this._senders || [];
-      origAddStream.apply(this, [stream]);
-      stream.getTracks().forEach(function (track) {
-        _this2._senders.push(shimSenderWithDtmf(_this2, track));
-      });
-    };
-
-    var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
-    window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
-      var _this3 = this;
-
-      this._senders = this._senders || [];
-      origRemoveStream.apply(this, [stream]);
-      stream.getTracks().forEach(function (track) {
-        var sender = _this3._senders.find(function (s) {
-          return s.track === track;
-        });
-
-        if (sender) {
-          // remove sender
-          _this3._senders.splice(_this3._senders.indexOf(sender), 1);
-        }
-      });
-    };
-  } else if (_typeof(window) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
-    var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
-    window.RTCPeerConnection.prototype.getSenders = function getSenders() {
-      var _this4 = this;
-
-      var senders = origGetSenders.apply(this, []);
-      senders.forEach(function (sender) {
-        return sender._pc = _this4;
-      });
-      return senders;
-    };
-
-    Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
-      get: function () {
-        if (this._dtmf === undefined) {
-          if (this.track.kind === 'audio') {
-            this._dtmf = this._pc.createDTMFSender(this.track);
-          } else {
-            this._dtmf = null;
-          }
-        }
-
-        return this._dtmf;
-      }
-    });
-  }
-}
-
-function shimGetStats(window) {
-  if (!window.RTCPeerConnection) {
-    return;
-  }
-
-  var origGetStats = window.RTCPeerConnection.prototype.getStats;
-
-  window.RTCPeerConnection.prototype.getStats = function getStats() {
-    var _this5 = this;
-
-    var [selector, onSucc, onErr] = arguments; // If selector is a function then we are in the old style stats so just
-    // pass back the original getStats format to avoid breaking old users.
-
-    if (arguments.length > 0 && typeof selector === 'function') {
-      return origGetStats.apply(this, arguments);
-    } // When spec-style getStats is supported, return those when called with
-    // either no arguments or the selector argument is null.
-
-
-    if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {
-      return origGetStats.apply(this, []);
-    }
-
-    var fixChromeStats_ = function (response) {
-      var standardReport = {};
-      var reports = response.result();
-      reports.forEach(function (report) {
-        var standardStats = {
-          id: report.id,
-          timestamp: report.timestamp,
-          type: {
-            localcandidate: 'local-candidate',
-            remotecandidate: 'remote-candidate'
-          }[report.type] || report.type
-        };
-        report.names().forEach(function (name) {
-          standardStats[name] = report.stat(name);
-        });
-        standardReport[standardStats.id] = standardStats;
-      });
-      return standardReport;
-    }; // shim getStats with maplike support
-
-
-    var makeMapStats = function (stats) {
-      return new Map(Object.keys(stats).map(function (key) {
-        return [key, stats[key]];
-      }));
-    };
-
-    if (arguments.length >= 2) {
-      var successCallbackWrapper_ = function (response) {
-        onSucc(makeMapStats(fixChromeStats_(response)));
-      };
-
-      return origGetStats.apply(this, [successCallbackWrapper_, selector]);
-    } // promise-support
-
-
-    return new Promise(function (resolve, reject) {
-      origGetStats.apply(_this5, [function (response) {
-        resolve(makeMapStats(fixChromeStats_(response)));
-      }, reject]);
-    }).then(onSucc, onErr);
-  };
-}
-
-function shimSenderReceiverGetStats(window) {
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {
-    return;
-  } // shim sender stats.
-
-
-  if (!('getStats' in window.RTCRtpSender.prototype)) {
-    var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
-    if (origGetSenders) {
-      window.RTCPeerConnection.prototype.getSenders = function getSenders() {
-        var _this6 = this;
-
-        var senders = origGetSenders.apply(this, []);
-        senders.forEach(function (sender) {
-          return sender._pc = _this6;
-        });
-        return senders;
-      };
-    }
-
-    var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
-    if (origAddTrack) {
-      window.RTCPeerConnection.prototype.addTrack = function addTrack() {
-        var sender = origAddTrack.apply(this, arguments);
-        sender._pc = this;
-        return sender;
-      };
-    }
-
-    window.RTCRtpSender.prototype.getStats = function getStats() {
-      var sender = this;
-      return this._pc.getStats().then(function (result) {
-        return (
-          /* Note: this will include stats of all senders that
-           *   send a track with the same id as sender.track as
-           *   it is not possible to identify the RTCRtpSender.
-           */
-          utils.filterStats(result, sender.track, true)
-        );
-      });
-    };
-  } // shim receiver stats.
-
-
-  if (!('getStats' in window.RTCRtpReceiver.prototype)) {
-    var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
-
-    if (origGetReceivers) {
-      window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
-        var _this7 = this;
-
-        var receivers = origGetReceivers.apply(this, []);
-        receivers.forEach(function (receiver) {
-          return receiver._pc = _this7;
-        });
-        return receivers;
-      };
-    }
-
-    utils.wrapPeerConnectionEvent(window, 'track', function (e) {
-      e.receiver._pc = e.srcElement;
-      return e;
-    });
-
-    window.RTCRtpReceiver.prototype.getStats = function getStats() {
-      var receiver = this;
-      return this._pc.getStats().then(function (result) {
-        return utils.filterStats(result, receiver.track, false);
-      });
-    };
-  }
-
-  if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {
-    return;
-  } // shim RTCPeerConnection.getStats(track).
-
-
-  var origGetStats = window.RTCPeerConnection.prototype.getStats;
-
-  window.RTCPeerConnection.prototype.getStats = function getStats() {
-    if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {
-      var track = arguments[0];
-      var sender;
-      var receiver;
-      var err;
-      this.getSenders().forEach(function (s) {
-        if (s.track === track) {
-          if (sender) {
-            err = true;
-          } else {
-            sender = s;
-          }
-        }
-      });
-      this.getReceivers().forEach(function (r) {
-        if (r.track === track) {
-          if (receiver) {
-            err = true;
-          } else {
-            receiver = r;
-          }
-        }
-
-        return r.track === track;
-      });
-
-      if (err || sender && receiver) {
-        return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));
-      } else if (sender) {
-        return sender.getStats();
-      } else if (receiver) {
-        return receiver.getStats();
-      }
-
-      return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));
-    }
-
-    return origGetStats.apply(this, arguments);
-  };
-}
-
-function shimAddTrackRemoveTrackWithNative(window) {
-  // shim addTrack/removeTrack with native variants in order to make
-  // the interactions with legacy getLocalStreams behave as in other browsers.
-  // Keeps a mapping stream.id => [stream, rtpsenders...]
-  window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
-    var _this8 = this;
-
-    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-    return Object.keys(this._shimmedLocalStreams).map(function (streamId) {
-      return _this8._shimmedLocalStreams[streamId][0];
-    });
-  };
-
-  var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
-  window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
-    if (!stream) {
-      return origAddTrack.apply(this, arguments);
-    }
-
-    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-    var sender = origAddTrack.apply(this, arguments);
-
-    if (!this._shimmedLocalStreams[stream.id]) {
-      this._shimmedLocalStreams[stream.id] = [stream, sender];
-    } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
-      this._shimmedLocalStreams[stream.id].push(sender);
-    }
-
-    return sender;
-  };
-
-  var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
-  window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
-    var _this9 = this;
-
-    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-    stream.getTracks().forEach(function (track) {
-      var alreadyExists = _this9.getSenders().find(function (s) {
-        return s.track === track;
-      });
-
-      if (alreadyExists) {
-        throw new DOMException('Track already exists.', 'InvalidAccessError');
-      }
-    });
-    var existingSenders = this.getSenders();
-    origAddStream.apply(this, arguments);
-    var newSenders = this.getSenders().filter(function (newSender) {
-      return existingSenders.indexOf(newSender) === -1;
-    });
-    this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
-  };
-
-  var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
-  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
-    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-    delete this._shimmedLocalStreams[stream.id];
-    return origRemoveStream.apply(this, arguments);
-  };
-
-  var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
-
-  window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
-    var _this10 = this;
-
-    this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-
-    if (sender) {
-      Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {
-        var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);
-
-        if (idx !== -1) {
-          _this10._shimmedLocalStreams[streamId].splice(idx, 1);
-        }
-
-        if (_this10._shimmedLocalStreams[streamId].length === 1) {
-          delete _this10._shimmedLocalStreams[streamId];
-        }
-      });
-    }
-
-    return origRemoveTrack.apply(this, arguments);
-  };
-}
-
-function shimAddTrackRemoveTrack(window, browserDetails) {
-  if (!window.RTCPeerConnection) {
-    return;
-  } // shim addTrack and removeTrack.
-
-
-  if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {
-    return shimAddTrackRemoveTrackWithNative(window);
-  } // also shim pc.getLocalStreams when addTrack is shimmed
-  // to return the original streams.
-
-
-  var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;
-
-  window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
-    var _this11 = this;
-
-    var nativeStreams = origGetLocalStreams.apply(this);
-    this._reverseStreams = this._reverseStreams || {};
-    return nativeStreams.map(function (stream) {
-      return _this11._reverseStreams[stream.id];
-    });
-  };
-
-  var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
-  window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
-    var _this12 = this;
-
-    this._streams = this._streams || {};
-    this._reverseStreams = this._reverseStreams || {};
-    stream.getTracks().forEach(function (track) {
-      var alreadyExists = _this12.getSenders().find(function (s) {
-        return s.track === track;
-      });
-
-      if (alreadyExists) {
-        throw new DOMException('Track already exists.', 'InvalidAccessError');
-      }
-    }); // Add identity mapping for consistency with addTrack.
-    // Unless this is being used with a stream from addTrack.
-
-    if (!this._reverseStreams[stream.id]) {
-      var newStream = new window.MediaStream(stream.getTracks());
-      this._streams[stream.id] = newStream;
-      this._reverseStreams[newStream.id] = stream;
-      stream = newStream;
-    }
-
-    origAddStream.apply(this, [stream]);
-  };
-
-  var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
-  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
-    this._streams = this._streams || {};
-    this._reverseStreams = this._reverseStreams || {};
-    origRemoveStream.apply(this, [this._streams[stream.id] || stream]);
-    delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];
-    delete this._streams[stream.id];
-  };
-
-  window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
-    var _this13 = this;
-
-    if (this.signalingState === 'closed') {
-      throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
-    }
-
-    var streams = [].slice.call(arguments, 1);
-
-    if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {
-      return t === track;
-    })) {
-      // this is not fully correct but all we can manage without
-      // [[associated MediaStreams]] internal slot.
-      throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');
-    }
-
-    var alreadyExists = this.getSenders().find(function (s) {
-      return s.track === track;
-    });
-
-    if (alreadyExists) {
-      throw new DOMException('Track already exists.', 'InvalidAccessError');
-    }
-
-    this._streams = this._streams || {};
-    this._reverseStreams = this._reverseStreams || {};
-    var oldStream = this._streams[stream.id];
-
-    if (oldStream) {
-      // this is using odd Chrome behaviour, use with caution:
-      // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
-      // Note: we rely on the high-level addTrack/dtmf shim to
-      // create the sender with a dtmf sender.
-      oldStream.addTrack(track); // Trigger ONN async.
-
-      Promise.resolve().then(function () {
-        _this13.dispatchEvent(new Event('negotiationneeded'));
-      });
-    } else {
-      var newStream = new window.MediaStream([track]);
-      this._streams[stream.id] = newStream;
-      this._reverseStreams[newStream.id] = stream;
-      this.addStream(newStream);
-    }
-
-    return this.getSenders().find(function (s) {
-      return s.track === track;
-    });
-  }; // replace the internal stream id with the external one and
-  // vice versa.
-
-
-  function replaceInternalStreamId(pc, description) {
-    var sdp = description.sdp;
-    Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
-      var externalStream = pc._reverseStreams[internalId];
-      var internalStream = pc._streams[externalStream.id];
-      sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);
-    });
-    return new RTCSessionDescription({
-      type: description.type,
-      sdp: sdp
-    });
-  }
-
-  function replaceExternalStreamId(pc, description) {
-    var sdp = description.sdp;
-    Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
-      var externalStream = pc._reverseStreams[internalId];
-      var internalStream = pc._streams[externalStream.id];
-      sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);
-    });
-    return new RTCSessionDescription({
-      type: description.type,
-      sdp: sdp
-    });
-  }
-
-  ['createOffer', 'createAnswer'].forEach(function (method) {
-    var nativeMethod = window.RTCPeerConnection.prototype[method];
-
-    var methodObj = _defineProperty({}, method, function () {
-      var _this14 = this;
-
-      var args = arguments;
-      var isLegacyCall = arguments.length && typeof arguments[0] === 'function';
-
-      if (isLegacyCall) {
-        return nativeMethod.apply(this, [function (description) {
-          var desc = replaceInternalStreamId(_this14, description);
-          args[0].apply(null, [desc]);
-        }, function (err) {
-          if (args[1]) {
-            args[1].apply(null, err);
-          }
-        }, arguments[2]]);
-      }
-
-      return nativeMethod.apply(this, arguments).then(function (description) {
-        return replaceInternalStreamId(_this14, description);
-      });
-    });
-
-    window.RTCPeerConnection.prototype[method] = methodObj[method];
-  });
-  var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;
-
-  window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {
-    if (!arguments.length || !arguments[0].type) {
-      return origSetLocalDescription.apply(this, arguments);
-    }
-
-    arguments[0] = replaceExternalStreamId(this, arguments[0]);
-    return origSetLocalDescription.apply(this, arguments);
-  }; // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier
-
-
-  var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');
-  Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {
-    get: function () {
-      var description = origLocalDescription.get.apply(this);
-
-      if (description.type === '') {
-        return description;
-      }
-
-      return replaceInternalStreamId(this, description);
-    }
-  });
-
-  window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
-    var _this15 = this;
-
-    if (this.signalingState === 'closed') {
-      throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
-    } // We can not yet check for sender instanceof RTCRtpSender
-    // since we shim RTPSender. So we check if sender._pc is set.
-
-
-    if (!sender._pc) {
-      throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');
-    }
-
-    var isLocal = sender._pc === this;
-
-    if (!isLocal) {
-      throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');
-    } // Search for the native stream the senders track belongs to.
-
-
-    this._streams = this._streams || {};
-    var stream;
-    Object.keys(this._streams).forEach(function (streamid) {
-      var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {
-        return sender.track === track;
-      });
-
-      if (hasTrack) {
-        stream = _this15._streams[streamid];
-      }
-    });
-
-    if (stream) {
-      if (stream.getTracks().length === 1) {
-        // if this is the last track of the stream, remove the stream. This
-        // takes care of any shimmed _senders.
-        this.removeStream(this._reverseStreams[stream.id]);
-      } else {
-        // relying on the same odd chrome behaviour as above.
-        stream.removeTrack(sender.track);
-      }
-
-      this.dispatchEvent(new Event('negotiationneeded'));
-    }
-  };
-}
-
-function shimPeerConnection(window, browserDetails) {
-  if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
-    // very basic support for old versions.
-    window.RTCPeerConnection = window.webkitRTCPeerConnection;
-  }
-
-  if (!window.RTCPeerConnection) {
-    return;
-  } // shim implicit creation of RTCSessionDescription/RTCIceCandidate
-
-
-  if (browserDetails.version < 53) {
-    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
-      var nativeMethod = window.RTCPeerConnection.prototype[method];
-
-      var methodObj = _defineProperty({}, method, function () {
-        arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
-        return nativeMethod.apply(this, arguments);
-      });
-
-      window.RTCPeerConnection.prototype[method] = methodObj[method];
-    });
-  }
-} // Attempt to fix ONN in plan-b mode.
-
-
-function fixNegotiationNeeded(window, browserDetails) {
-  utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {
-    var pc = e.target;
-
-    if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') {
-      if (pc.signalingState !== 'stable') {
-        return;
-      }
-    }
-
-    return e;
-  });
-}
-},{"../utils.js":"iSxC","./getusermedia":"s6SN","./getdisplaymedia":"VHa8"}],"NZ1C":[function(require,module,exports) {
-/*
- *  Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.filterIceServers = filterIceServers;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-// Edge does not like
-// 1) stun: filtered after 14393 unless ?transport=udp is present
-// 2) turn: that does not have all of turn:host:port?transport=udp
-// 3) turn: with ipv6 addresses
-// 4) turn: occurring muliple times
-function filterIceServers(iceServers, edgeVersion) {
-  var hasTurn = false;
-  iceServers = JSON.parse(JSON.stringify(iceServers));
-  return iceServers.filter(function (server) {
-    if (server && (server.urls || server.url)) {
-      var urls = server.urls || server.url;
-
-      if (server.url && !server.urls) {
-        utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
-      }
-
-      var isString = typeof urls === 'string';
-
-      if (isString) {
-        urls = [urls];
-      }
-
-      urls = urls.filter(function (url) {
-        // filter STUN unconditionally.
-        if (url.indexOf('stun:') === 0) {
-          return false;
-        }
-
-        var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp');
-
-        if (validTurn && !hasTurn) {
-          hasTurn = true;
-          return true;
-        }
-
-        return validTurn && !hasTurn;
-      });
-      delete server.url;
-      server.urls = isString ? urls[0] : urls;
-      return !!urls.length;
-    }
-  });
-}
-},{"../utils":"iSxC"}],"YHvh":[function(require,module,exports) {
-/* eslint-env node */
-'use strict';
-
-// SDP helpers.
-var SDPUtils = {};
-
-// Generate an alphanumeric identifier for cname or mids.
-// TODO: use UUIDs instead? https://gist.github.com/jed/982883
-SDPUtils.generateIdentifier = function() {
-  return Math.random().toString(36).substr(2, 10);
-};
-
-// The RTCP CNAME used by all peerconnections from the same JS.
-SDPUtils.localCName = SDPUtils.generateIdentifier();
-
-// Splits SDP into lines, dealing with both CRLF and LF.
-SDPUtils.splitLines = function(blob) {
-  return blob.trim().split('\n').map(function(line) {
-    return line.trim();
-  });
-};
-// Splits SDP into sessionpart and mediasections. Ensures CRLF.
-SDPUtils.splitSections = function(blob) {
-  var parts = blob.split('\nm=');
-  return parts.map(function(part, index) {
-    return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
-  });
-};
-
-// returns the session description.
-SDPUtils.getDescription = function(blob) {
-  var sections = SDPUtils.splitSections(blob);
-  return sections && sections[0];
-};
-
-// returns the individual media sections.
-SDPUtils.getMediaSections = function(blob) {
-  var sections = SDPUtils.splitSections(blob);
-  sections.shift();
-  return sections;
-};
-
-// Returns lines that start with a certain prefix.
-SDPUtils.matchPrefix = function(blob, prefix) {
-  return SDPUtils.splitLines(blob).filter(function(line) {
-    return line.indexOf(prefix) === 0;
-  });
-};
-
-// Parses an ICE candidate line. Sample input:
-// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
-// rport 55996"
-SDPUtils.parseCandidate = function(line) {
-  var parts;
-  // Parse both variants.
-  if (line.indexOf('a=candidate:') === 0) {
-    parts = line.substring(12).split(' ');
-  } else {
-    parts = line.substring(10).split(' ');
-  }
-
-  var candidate = {
-    foundation: parts[0],
-    component: parseInt(parts[1], 10),
-    protocol: parts[2].toLowerCase(),
-    priority: parseInt(parts[3], 10),
-    ip: parts[4],
-    address: parts[4], // address is an alias for ip.
-    port: parseInt(parts[5], 10),
-    // skip parts[6] == 'typ'
-    type: parts[7]
-  };
-
-  for (var i = 8; i < parts.length; i += 2) {
-    switch (parts[i]) {
-      case 'raddr':
-        candidate.relatedAddress = parts[i + 1];
-        break;
-      case 'rport':
-        candidate.relatedPort = parseInt(parts[i + 1], 10);
-        break;
-      case 'tcptype':
-        candidate.tcpType = parts[i + 1];
-        break;
-      case 'ufrag':
-        candidate.ufrag = parts[i + 1]; // for backward compability.
-        candidate.usernameFragment = parts[i + 1];
-        break;
-      default: // extension handling, in particular ufrag
-        candidate[parts[i]] = parts[i + 1];
-        break;
-    }
-  }
-  return candidate;
-};
-
-// Translates a candidate object into SDP candidate attribute.
-SDPUtils.writeCandidate = function(candidate) {
-  var sdp = [];
-  sdp.push(candidate.foundation);
-  sdp.push(candidate.component);
-  sdp.push(candidate.protocol.toUpperCase());
-  sdp.push(candidate.priority);
-  sdp.push(candidate.address || candidate.ip);
-  sdp.push(candidate.port);
-
-  var type = candidate.type;
-  sdp.push('typ');
-  sdp.push(type);
-  if (type !== 'host' && candidate.relatedAddress &&
-      candidate.relatedPort) {
-    sdp.push('raddr');
-    sdp.push(candidate.relatedAddress);
-    sdp.push('rport');
-    sdp.push(candidate.relatedPort);
-  }
-  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
-    sdp.push('tcptype');
-    sdp.push(candidate.tcpType);
-  }
-  if (candidate.usernameFragment || candidate.ufrag) {
-    sdp.push('ufrag');
-    sdp.push(candidate.usernameFragment || candidate.ufrag);
-  }
-  return 'candidate:' + sdp.join(' ');
-};
-
-// Parses an ice-options line, returns an array of option tags.
-// a=ice-options:foo bar
-SDPUtils.parseIceOptions = function(line) {
-  return line.substr(14).split(' ');
-};
-
-// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
-// a=rtpmap:111 opus/48000/2
-SDPUtils.parseRtpMap = function(line) {
-  var parts = line.substr(9).split(' ');
-  var parsed = {
-    payloadType: parseInt(parts.shift(), 10) // was: id
-  };
-
-  parts = parts[0].split('/');
-
-  parsed.name = parts[0];
-  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
-  parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
-  // legacy alias, got renamed back to channels in ORTC.
-  parsed.numChannels = parsed.channels;
-  return parsed;
-};
-
-// Generate an a=rtpmap line from RTCRtpCodecCapability or
-// RTCRtpCodecParameters.
-SDPUtils.writeRtpMap = function(codec) {
-  var pt = codec.payloadType;
-  if (codec.preferredPayloadType !== undefined) {
-    pt = codec.preferredPayloadType;
-  }
-  var channels = codec.channels || codec.numChannels || 1;
-  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
-      (channels !== 1 ? '/' + channels : '') + '\r\n';
-};
-
-// Parses an a=extmap line (headerextension from RFC 5285). Sample input:
-// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
-// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
-SDPUtils.parseExtmap = function(line) {
-  var parts = line.substr(9).split(' ');
-  return {
-    id: parseInt(parts[0], 10),
-    direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
-    uri: parts[1]
-  };
-};
-
-// Generates a=extmap line from RTCRtpHeaderExtensionParameters or
-// RTCRtpHeaderExtension.
-SDPUtils.writeExtmap = function(headerExtension) {
-  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
-      (headerExtension.direction && headerExtension.direction !== 'sendrecv'
-        ? '/' + headerExtension.direction
-        : '') +
-      ' ' + headerExtension.uri + '\r\n';
-};
-
-// Parses an ftmp line, returns dictionary. Sample input:
-// a=fmtp:96 vbr=on;cng=on
-// Also deals with vbr=on; cng=on
-SDPUtils.parseFmtp = function(line) {
-  var parsed = {};
-  var kv;
-  var parts = line.substr(line.indexOf(' ') + 1).split(';');
-  for (var j = 0; j < parts.length; j++) {
-    kv = parts[j].trim().split('=');
-    parsed[kv[0].trim()] = kv[1];
-  }
-  return parsed;
-};
-
-// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeFmtp = function(codec) {
-  var line = '';
-  var pt = codec.payloadType;
-  if (codec.preferredPayloadType !== undefined) {
-    pt = codec.preferredPayloadType;
-  }
-  if (codec.parameters && Object.keys(codec.parameters).length) {
-    var params = [];
-    Object.keys(codec.parameters).forEach(function(param) {
-      if (codec.parameters[param]) {
-        params.push(param + '=' + codec.parameters[param]);
-      } else {
-        params.push(param);
-      }
-    });
-    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
-  }
-  return line;
-};
-
-// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
-// a=rtcp-fb:98 nack rpsi
-SDPUtils.parseRtcpFb = function(line) {
-  var parts = line.substr(line.indexOf(' ') + 1).split(' ');
-  return {
-    type: parts.shift(),
-    parameter: parts.join(' ')
-  };
-};
-// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeRtcpFb = function(codec) {
-  var lines = '';
-  var pt = codec.payloadType;
-  if (codec.preferredPayloadType !== undefined) {
-    pt = codec.preferredPayloadType;
-  }
-  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
-    // FIXME: special handling for trr-int?
-    codec.rtcpFeedback.forEach(function(fb) {
-      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
-      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
-          '\r\n';
-    });
-  }
-  return lines;
-};
-
-// Parses an RFC 5576 ssrc media attribute. Sample input:
-// a=ssrc:3735928559 cname:something
-SDPUtils.parseSsrcMedia = function(line) {
-  var sp = line.indexOf(' ');
-  var parts = {
-    ssrc: parseInt(line.substr(7, sp - 7), 10)
-  };
-  var colon = line.indexOf(':', sp);
-  if (colon > -1) {
-    parts.attribute = line.substr(sp + 1, colon - sp - 1);
-    parts.value = line.substr(colon + 1);
-  } else {
-    parts.attribute = line.substr(sp + 1);
-  }
-  return parts;
-};
-
-SDPUtils.parseSsrcGroup = function(line) {
-  var parts = line.substr(13).split(' ');
-  return {
-    semantics: parts.shift(),
-    ssrcs: parts.map(function(ssrc) {
-      return parseInt(ssrc, 10);
-    })
-  };
-};
-
-// Extracts the MID (RFC 5888) from a media section.
-// returns the MID or undefined if no mid line was found.
-SDPUtils.getMid = function(mediaSection) {
-  var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
-  if (mid) {
-    return mid.substr(6);
-  }
-};
-
-SDPUtils.parseFingerprint = function(line) {
-  var parts = line.substr(14).split(' ');
-  return {
-    algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
-    value: parts[1]
-  };
-};
-
-// Extracts DTLS parameters from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-//   get the fingerprint line as input. See also getIceParameters.
-SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
-  var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
-    'a=fingerprint:');
-  // Note: a=setup line is ignored since we use the 'auto' role.
-  // Note2: 'algorithm' is not case sensitive except in Edge.
-  return {
-    role: 'auto',
-    fingerprints: lines.map(SDPUtils.parseFingerprint)
-  };
-};
-
-// Serializes DTLS parameters to SDP.
-SDPUtils.writeDtlsParameters = function(params, setupType) {
-  var sdp = 'a=setup:' + setupType + '\r\n';
-  params.fingerprints.forEach(function(fp) {
-    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
-  });
-  return sdp;
-};
-
-// Parses a=crypto lines into
-//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members
-SDPUtils.parseCryptoLine = function(line) {
-  var parts = line.substr(9).split(' ');
-  return {
-    tag: parseInt(parts[0], 10),
-    cryptoSuite: parts[1],
-    keyParams: parts[2],
-    sessionParams: parts.slice(3),
-  };
-};
-
-SDPUtils.writeCryptoLine = function(parameters) {
-  return 'a=crypto:' + parameters.tag + ' ' +
-    parameters.cryptoSuite + ' ' +
-    (typeof parameters.keyParams === 'object'
-      ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)
-      : parameters.keyParams) +
-    (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +
-    '\r\n';
-};
-
-// Parses the crypto key parameters into
-//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*
-SDPUtils.parseCryptoKeyParams = function(keyParams) {
-  if (keyParams.indexOf('inline:') !== 0) {
-    return null;
-  }
-  var parts = keyParams.substr(7).split('|');
-  return {
-    keyMethod: 'inline',
-    keySalt: parts[0],
-    lifeTime: parts[1],
-    mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,
-    mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,
-  };
-};
-
-SDPUtils.writeCryptoKeyParams = function(keyParams) {
-  return keyParams.keyMethod + ':'
-    + keyParams.keySalt +
-    (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +
-    (keyParams.mkiValue && keyParams.mkiLength
-      ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength
-      : '');
-};
-
-// Extracts all SDES paramters.
-SDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {
-  var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
-    'a=crypto:');
-  return lines.map(SDPUtils.parseCryptoLine);
-};
-
-// Parses ICE information from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-//   get the ice-ufrag and ice-pwd lines as input.
-SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
-  var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,
-    'a=ice-ufrag:')[0];
-  var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,
-    'a=ice-pwd:')[0];
-  if (!(ufrag && pwd)) {
-    return null;
-  }
-  return {
-    usernameFragment: ufrag.substr(12),
-    password: pwd.substr(10),
-  };
-};
-
-// Serializes ICE parameters to SDP.
-SDPUtils.writeIceParameters = function(params) {
-  return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
-      'a=ice-pwd:' + params.password + '\r\n';
-};
-
-// Parses the SDP media section and returns RTCRtpParameters.
-SDPUtils.parseRtpParameters = function(mediaSection) {
-  var description = {
-    codecs: [],
-    headerExtensions: [],
-    fecMechanisms: [],
-    rtcp: []
-  };
-  var lines = SDPUtils.splitLines(mediaSection);
-  var mline = lines[0].split(' ');
-  for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
-    var pt = mline[i];
-    var rtpmapline = SDPUtils.matchPrefix(
-      mediaSection, 'a=rtpmap:' + pt + ' ')[0];
-    if (rtpmapline) {
-      var codec = SDPUtils.parseRtpMap(rtpmapline);
-      var fmtps = SDPUtils.matchPrefix(
-        mediaSection, 'a=fmtp:' + pt + ' ');
-      // Only the first a=fmtp:<pt> is considered.
-      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
-      codec.rtcpFeedback = SDPUtils.matchPrefix(
-        mediaSection, 'a=rtcp-fb:' + pt + ' ')
-        .map(SDPUtils.parseRtcpFb);
-      description.codecs.push(codec);
-      // parse FEC mechanisms from rtpmap lines.
-      switch (codec.name.toUpperCase()) {
-        case 'RED':
-        case 'ULPFEC':
-          description.fecMechanisms.push(codec.name.toUpperCase());
-          break;
-        default: // only RED and ULPFEC are recognized as FEC mechanisms.
-          break;
-      }
-    }
-  }
-  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
-    description.headerExtensions.push(SDPUtils.parseExtmap(line));
-  });
-  // FIXME: parse rtcp.
-  return description;
-};
-
-// Generates parts of the SDP media section describing the capabilities /
-// parameters.
-SDPUtils.writeRtpDescription = function(kind, caps) {
-  var sdp = '';
-
-  // Build the mline.
-  sdp += 'm=' + kind + ' ';
-  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
-  sdp += ' UDP/TLS/RTP/SAVPF ';
-  sdp += caps.codecs.map(function(codec) {
-    if (codec.preferredPayloadType !== undefined) {
-      return codec.preferredPayloadType;
-    }
-    return codec.payloadType;
-  }).join(' ') + '\r\n';
-
-  sdp += 'c=IN IP4 0.0.0.0\r\n';
-  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
-
-  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
-  caps.codecs.forEach(function(codec) {
-    sdp += SDPUtils.writeRtpMap(codec);
-    sdp += SDPUtils.writeFmtp(codec);
-    sdp += SDPUtils.writeRtcpFb(codec);
-  });
-  var maxptime = 0;
-  caps.codecs.forEach(function(codec) {
-    if (codec.maxptime > maxptime) {
-      maxptime = codec.maxptime;
-    }
-  });
-  if (maxptime > 0) {
-    sdp += 'a=maxptime:' + maxptime + '\r\n';
-  }
-  sdp += 'a=rtcp-mux\r\n';
-
-  if (caps.headerExtensions) {
-    caps.headerExtensions.forEach(function(extension) {
-      sdp += SDPUtils.writeExtmap(extension);
-    });
-  }
-  // FIXME: write fecMechanisms.
-  return sdp;
-};
-
-// Parses the SDP media section and returns an array of
-// RTCRtpEncodingParameters.
-SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
-  var encodingParameters = [];
-  var description = SDPUtils.parseRtpParameters(mediaSection);
-  var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
-  var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
-
-  // filter a=ssrc:... cname:, ignore PlanB-msid
-  var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
-    .map(function(line) {
-      return SDPUtils.parseSsrcMedia(line);
-    })
-    .filter(function(parts) {
-      return parts.attribute === 'cname';
-    });
-  var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
-  var secondarySsrc;
-
-  var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
-    .map(function(line) {
-      var parts = line.substr(17).split(' ');
-      return parts.map(function(part) {
-        return parseInt(part, 10);
-      });
-    });
-  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
-    secondarySsrc = flows[0][1];
-  }
-
-  description.codecs.forEach(function(codec) {
-    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
-      var encParam = {
-        ssrc: primarySsrc,
-        codecPayloadType: parseInt(codec.parameters.apt, 10)
-      };
-      if (primarySsrc && secondarySsrc) {
-        encParam.rtx = {ssrc: secondarySsrc};
-      }
-      encodingParameters.push(encParam);
-      if (hasRed) {
-        encParam = JSON.parse(JSON.stringify(encParam));
-        encParam.fec = {
-          ssrc: primarySsrc,
-          mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
-        };
-        encodingParameters.push(encParam);
-      }
-    }
-  });
-  if (encodingParameters.length === 0 && primarySsrc) {
-    encodingParameters.push({
-      ssrc: primarySsrc
-    });
-  }
-
-  // we support both b=AS and b=TIAS but interpret AS as TIAS.
-  var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
-  if (bandwidth.length) {
-    if (bandwidth[0].indexOf('b=TIAS:') === 0) {
-      bandwidth = parseInt(bandwidth[0].substr(7), 10);
-    } else if (bandwidth[0].indexOf('b=AS:') === 0) {
-      // use formula from JSEP to convert b=AS to TIAS value.
-      bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
-          - (50 * 40 * 8);
-    } else {
-      bandwidth = undefined;
-    }
-    encodingParameters.forEach(function(params) {
-      params.maxBitrate = bandwidth;
-    });
-  }
-  return encodingParameters;
-};
-
-// parses http://draft.ortc.org/#rtcrtcpparameters*
-SDPUtils.parseRtcpParameters = function(mediaSection) {
-  var rtcpParameters = {};
-
-  // Gets the first SSRC. Note tha with RTX there might be multiple
-  // SSRCs.
-  var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
-    .map(function(line) {
-      return SDPUtils.parseSsrcMedia(line);
-    })
-    .filter(function(obj) {
-      return obj.attribute === 'cname';
-    })[0];
-  if (remoteSsrc) {
-    rtcpParameters.cname = remoteSsrc.value;
-    rtcpParameters.ssrc = remoteSsrc.ssrc;
-  }
-
-  // Edge uses the compound attribute instead of reducedSize
-  // compound is !reducedSize
-  var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
-  rtcpParameters.reducedSize = rsize.length > 0;
-  rtcpParameters.compound = rsize.length === 0;
-
-  // parses the rtcp-mux attrіbute.
-  // Note that Edge does not support unmuxed RTCP.
-  var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
-  rtcpParameters.mux = mux.length > 0;
-
-  return rtcpParameters;
-};
-
-// parses either a=msid: or a=ssrc:... msid lines and returns
-// the id of the MediaStream and MediaStreamTrack.
-SDPUtils.parseMsid = function(mediaSection) {
-  var parts;
-  var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
-  if (spec.length === 1) {
-    parts = spec[0].substr(7).split(' ');
-    return {stream: parts[0], track: parts[1]};
-  }
-  var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
-    .map(function(line) {
-      return SDPUtils.parseSsrcMedia(line);
-    })
-    .filter(function(msidParts) {
-      return msidParts.attribute === 'msid';
-    });
-  if (planB.length > 0) {
-    parts = planB[0].value.split(' ');
-    return {stream: parts[0], track: parts[1]};
-  }
-};
-
-// SCTP
-// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back
-// to draft-ietf-mmusic-sctp-sdp-05
-SDPUtils.parseSctpDescription = function(mediaSection) {
-  var mline = SDPUtils.parseMLine(mediaSection);
-  var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');
-  var maxMessageSize;
-  if (maxSizeLine.length > 0) {
-    maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);
-  }
-  if (isNaN(maxMessageSize)) {
-    maxMessageSize = 65536;
-  }
-  var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');
-  if (sctpPort.length > 0) {
-    return {
-      port: parseInt(sctpPort[0].substr(12), 10),
-      protocol: mline.fmt,
-      maxMessageSize: maxMessageSize
-    };
-  }
-  var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');
-  if (sctpMapLines.length > 0) {
-    var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]
-      .substr(10)
-      .split(' ');
-    return {
-      port: parseInt(parts[0], 10),
-      protocol: parts[1],
-      maxMessageSize: maxMessageSize
-    };
-  }
-};
-
-// SCTP
-// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers
-// support by now receiving in this format, unless we originally parsed
-// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line
-// protocol of DTLS/SCTP -- without UDP/ or TCP/)
-SDPUtils.writeSctpDescription = function(media, sctp) {
-  var output = [];
-  if (media.protocol !== 'DTLS/SCTP') {
-    output = [
-      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n',
-      'c=IN IP4 0.0.0.0\r\n',
-      'a=sctp-port:' + sctp.port + '\r\n'
-    ];
-  } else {
-    output = [
-      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n',
-      'c=IN IP4 0.0.0.0\r\n',
-      'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n'
-    ];
-  }
-  if (sctp.maxMessageSize !== undefined) {
-    output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n');
-  }
-  return output.join('');
-};
-
-// Generate a session ID for SDP.
-// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
-// recommends using a cryptographically random +ve 64-bit value
-// but right now this should be acceptable and within the right range
-SDPUtils.generateSessionId = function() {
-  return Math.random().toString().substr(2, 21);
-};
-
-// Write boilder plate for start of SDP
-// sessId argument is optional - if not supplied it will
-// be generated randomly
-// sessVersion is optional and defaults to 2
-// sessUser is optional and defaults to 'thisisadapterortc'
-SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {
-  var sessionId;
-  var version = sessVer !== undefined ? sessVer : 2;
-  if (sessId) {
-    sessionId = sessId;
-  } else {
-    sessionId = SDPUtils.generateSessionId();
-  }
-  var user = sessUser || 'thisisadapterortc';
-  // FIXME: sess-id should be an NTP timestamp.
-  return 'v=0\r\n' +
-      'o=' + user + ' ' + sessionId + ' ' + version +
-        ' IN IP4 127.0.0.1\r\n' +
-      's=-\r\n' +
-      't=0 0\r\n';
-};
-
-SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
-  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
-
-  // Map ICE parameters (ufrag, pwd) to SDP.
-  sdp += SDPUtils.writeIceParameters(
-    transceiver.iceGatherer.getLocalParameters());
-
-  // Map DTLS parameters to SDP.
-  sdp += SDPUtils.writeDtlsParameters(
-    transceiver.dtlsTransport.getLocalParameters(),
-    type === 'offer' ? 'actpass' : 'active');
-
-  sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
-  if (transceiver.direction) {
-    sdp += 'a=' + transceiver.direction + '\r\n';
-  } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
-    sdp += 'a=sendrecv\r\n';
-  } else if (transceiver.rtpSender) {
-    sdp += 'a=sendonly\r\n';
-  } else if (transceiver.rtpReceiver) {
-    sdp += 'a=recvonly\r\n';
-  } else {
-    sdp += 'a=inactive\r\n';
-  }
-
-  if (transceiver.rtpSender) {
-    // spec.
-    var msid = 'msid:' + stream.id + ' ' +
-        transceiver.rtpSender.track.id + '\r\n';
-    sdp += 'a=' + msid;
-
-    // for Chrome.
-    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
-        ' ' + msid;
-    if (transceiver.sendEncodingParameters[0].rtx) {
-      sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
-          ' ' + msid;
-      sdp += 'a=ssrc-group:FID ' +
-          transceiver.sendEncodingParameters[0].ssrc + ' ' +
-          transceiver.sendEncodingParameters[0].rtx.ssrc +
-          '\r\n';
-    }
-  }
-  // FIXME: this should be written by writeRtpDescription.
-  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
-      ' cname:' + SDPUtils.localCName + '\r\n';
-  if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
-    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
-        ' cname:' + SDPUtils.localCName + '\r\n';
-  }
-  return sdp;
-};
-
-// Gets the direction from the mediaSection or the sessionpart.
-SDPUtils.getDirection = function(mediaSection, sessionpart) {
-  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
-  var lines = SDPUtils.splitLines(mediaSection);
-  for (var i = 0; i < lines.length; i++) {
-    switch (lines[i]) {
-      case 'a=sendrecv':
-      case 'a=sendonly':
-      case 'a=recvonly':
-      case 'a=inactive':
-        return lines[i].substr(2);
-      default:
-        // FIXME: What should happen here?
-    }
-  }
-  if (sessionpart) {
-    return SDPUtils.getDirection(sessionpart);
-  }
-  return 'sendrecv';
-};
-
-SDPUtils.getKind = function(mediaSection) {
-  var lines = SDPUtils.splitLines(mediaSection);
-  var mline = lines[0].split(' ');
-  return mline[0].substr(2);
-};
-
-SDPUtils.isRejected = function(mediaSection) {
-  return mediaSection.split(' ', 2)[1] === '0';
-};
-
-SDPUtils.parseMLine = function(mediaSection) {
-  var lines = SDPUtils.splitLines(mediaSection);
-  var parts = lines[0].substr(2).split(' ');
-  return {
-    kind: parts[0],
-    port: parseInt(parts[1], 10),
-    protocol: parts[2],
-    fmt: parts.slice(3).join(' ')
-  };
-};
-
-SDPUtils.parseOLine = function(mediaSection) {
-  var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
-  var parts = line.substr(2).split(' ');
-  return {
-    username: parts[0],
-    sessionId: parts[1],
-    sessionVersion: parseInt(parts[2], 10),
-    netType: parts[3],
-    addressType: parts[4],
-    address: parts[5]
-  };
-};
-
-// a very naive interpretation of a valid SDP.
-SDPUtils.isValidSDP = function(blob) {
-  if (typeof blob !== 'string' || blob.length === 0) {
-    return false;
-  }
-  var lines = SDPUtils.splitLines(blob);
-  for (var i = 0; i < lines.length; i++) {
-    if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {
-      return false;
-    }
-    // TODO: check the modifier a bit more.
-  }
-  return true;
-};
-
-// Expose public methods.
-if (typeof module === 'object') {
-  module.exports = SDPUtils;
-}
-
-},{}],"NJ2u":[function(require,module,exports) {
-/*
- *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-var SDPUtils = require('sdp');
-
-function fixStatsType(stat) {
-  return {
-    inboundrtp: 'inbound-rtp',
-    outboundrtp: 'outbound-rtp',
-    candidatepair: 'candidate-pair',
-    localcandidate: 'local-candidate',
-    remotecandidate: 'remote-candidate'
-  }[stat.type] || stat.type;
-}
-
-function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
-  var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); // Map ICE parameters (ufrag, pwd) to SDP.
-
-  sdp += SDPUtils.writeIceParameters(transceiver.iceGatherer.getLocalParameters()); // Map DTLS parameters to SDP.
-
-  sdp += SDPUtils.writeDtlsParameters(transceiver.dtlsTransport.getLocalParameters(), type === 'offer' ? 'actpass' : dtlsRole || 'active');
-  sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
-  if (transceiver.rtpSender && transceiver.rtpReceiver) {
-    sdp += 'a=sendrecv\r\n';
-  } else if (transceiver.rtpSender) {
-    sdp += 'a=sendonly\r\n';
-  } else if (transceiver.rtpReceiver) {
-    sdp += 'a=recvonly\r\n';
-  } else {
-    sdp += 'a=inactive\r\n';
-  }
-
-  if (transceiver.rtpSender) {
-    var trackId = transceiver.rtpSender._initialTrackId || transceiver.rtpSender.track.id;
-    transceiver.rtpSender._initialTrackId = trackId; // spec.
-
-    var msid = 'msid:' + (stream ? stream.id : '-') + ' ' + trackId + '\r\n';
-    sdp += 'a=' + msid; // for Chrome. Legacy should no longer be required.
-
-    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' ' + msid; // RTX
-
-    if (transceiver.sendEncodingParameters[0].rtx) {
-      sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' ' + msid;
-      sdp += 'a=ssrc-group:FID ' + transceiver.sendEncodingParameters[0].ssrc + ' ' + transceiver.sendEncodingParameters[0].rtx.ssrc + '\r\n';
-    }
-  } // FIXME: this should be written by writeRtpDescription.
-
-
-  sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' cname:' + SDPUtils.localCName + '\r\n';
-
-  if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
-    sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' cname:' + SDPUtils.localCName + '\r\n';
-  }
-
-  return sdp;
-} // Edge does not like
-// 1) stun: filtered after 14393 unless ?transport=udp is present
-// 2) turn: that does not have all of turn:host:port?transport=udp
-// 3) turn: with ipv6 addresses
-// 4) turn: occurring muliple times
-
-
-function filterIceServers(iceServers, edgeVersion) {
-  var hasTurn = false;
-  iceServers = JSON.parse(JSON.stringify(iceServers));
-  return iceServers.filter(function (server) {
-    if (server && (server.urls || server.url)) {
-      var urls = server.urls || server.url;
-
-      if (server.url && !server.urls) {
-        console.warn('RTCIceServer.url is deprecated! Use urls instead.');
-      }
-
-      var isString = typeof urls === 'string';
-
-      if (isString) {
-        urls = [urls];
-      }
-
-      urls = urls.filter(function (url) {
-        var validTurn = url.indexOf('turn:') === 0 && url.indexOf('transport=udp') !== -1 && url.indexOf('turn:[') === -1 && !hasTurn;
-
-        if (validTurn) {
-          hasTurn = true;
-          return true;
-        }
-
-        return url.indexOf('stun:') === 0 && edgeVersion >= 14393 && url.indexOf('?transport=udp') === -1;
-      });
-      delete server.url;
-      server.urls = isString ? urls[0] : urls;
-      return !!urls.length;
-    }
-  });
-} // Determines the intersection of local and remote capabilities.
-
-
-function getCommonCapabilities(localCapabilities, remoteCapabilities) {
-  var commonCapabilities = {
-    codecs: [],
-    headerExtensions: [],
-    fecMechanisms: []
-  };
-
-  var findCodecByPayloadType = function (pt, codecs) {
-    pt = parseInt(pt, 10);
-
-    for (var i = 0; i < codecs.length; i++) {
-      if (codecs[i].payloadType === pt || codecs[i].preferredPayloadType === pt) {
-        return codecs[i];
-      }
-    }
-  };
-
-  var rtxCapabilityMatches = function (lRtx, rRtx, lCodecs, rCodecs) {
-    var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
-    var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
-    return lCodec && rCodec && lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
-  };
-
-  localCapabilities.codecs.forEach(function (lCodec) {
-    for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
-      var rCodec = remoteCapabilities.codecs[i];
-
-      if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && lCodec.clockRate === rCodec.clockRate) {
-        if (lCodec.name.toLowerCase() === 'rtx' && lCodec.parameters && rCodec.parameters.apt) {
-          // for RTX we need to find the local rtx that has a apt
-          // which points to the same local codec as the remote one.
-          if (!rtxCapabilityMatches(lCodec, rCodec, localCapabilities.codecs, remoteCapabilities.codecs)) {
-            continue;
-          }
-        }
-
-        rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
-        // number of channels is the highest common number of channels
-
-        rCodec.numChannels = Math.min(lCodec.numChannels, rCodec.numChannels); // push rCodec so we reply with offerer payload type
-
-        commonCapabilities.codecs.push(rCodec); // determine common feedback mechanisms
-
-        rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function (fb) {
-          for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
-            if (lCodec.rtcpFeedback[j].type === fb.type && lCodec.rtcpFeedback[j].parameter === fb.parameter) {
-              return true;
-            }
-          }
-
-          return false;
-        }); // FIXME: also need to determine .parameters
-        //  see https://github.com/openpeer/ortc/issues/569
-
-        break;
-      }
-    }
-  });
-  localCapabilities.headerExtensions.forEach(function (lHeaderExtension) {
-    for (var i = 0; i < remoteCapabilities.headerExtensions.length; i++) {
-      var rHeaderExtension = remoteCapabilities.headerExtensions[i];
-
-      if (lHeaderExtension.uri === rHeaderExtension.uri) {
-        commonCapabilities.headerExtensions.push(rHeaderExtension);
-        break;
-      }
-    }
-  }); // FIXME: fecMechanisms
-
-  return commonCapabilities;
-} // is action=setLocalDescription with type allowed in signalingState
-
-
-function isActionAllowedInSignalingState(action, type, signalingState) {
-  return {
-    offer: {
-      setLocalDescription: ['stable', 'have-local-offer'],
-      setRemoteDescription: ['stable', 'have-remote-offer']
-    },
-    answer: {
-      setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
-      setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
-    }
-  }[type][action].indexOf(signalingState) !== -1;
-}
-
-function maybeAddCandidate(iceTransport, candidate) {
-  // Edge's internal representation adds some fields therefore
-  // not all fieldѕ are taken into account.
-  var alreadyAdded = iceTransport.getRemoteCandidates().find(function (remoteCandidate) {
-    return candidate.foundation === remoteCandidate.foundation && candidate.ip === remoteCandidate.ip && candidate.port === remoteCandidate.port && candidate.priority === remoteCandidate.priority && candidate.protocol === remoteCandidate.protocol && candidate.type === remoteCandidate.type;
-  });
-
-  if (!alreadyAdded) {
-    iceTransport.addRemoteCandidate(candidate);
-  }
-
-  return !alreadyAdded;
-}
-
-function makeError(name, description) {
-  var e = new Error(description);
-  e.name = name; // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
-
-  e.code = {
-    NotSupportedError: 9,
-    InvalidStateError: 11,
-    InvalidAccessError: 15,
-    TypeError: undefined,
-    OperationError: undefined
-  }[name];
-  return e;
-}
-
-module.exports = function (window, edgeVersion) {
-  // https://w3c.github.io/mediacapture-main/#mediastream
-  // Helper function to add the track to the stream and
-  // dispatch the event ourselves.
-  function addTrackToStreamAndFireEvent(track, stream) {
-    stream.addTrack(track);
-    stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack', {
-      track: track
-    }));
-  }
-
-  function removeTrackFromStreamAndFireEvent(track, stream) {
-    stream.removeTrack(track);
-    stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack', {
-      track: track
-    }));
-  }
-
-  function fireAddTrack(pc, track, receiver, streams) {
-    var trackEvent = new Event('track');
-    trackEvent.track = track;
-    trackEvent.receiver = receiver;
-    trackEvent.transceiver = {
-      receiver: receiver
-    };
-    trackEvent.streams = streams;
-    window.setTimeout(function () {
-      pc._dispatchEvent('track', trackEvent);
-    });
-  }
-
-  var RTCPeerConnection = function (config) {
-    var pc = this;
-
-    var _eventTarget = document.createDocumentFragment();
-
-    ['addEventListener', 'removeEventListener', 'dispatchEvent'].forEach(function (method) {
-      pc[method] = _eventTarget[method].bind(_eventTarget);
-    });
-    this.canTrickleIceCandidates = null;
-    this.needNegotiation = false;
-    this.localStreams = [];
-    this.remoteStreams = [];
-    this._localDescription = null;
-    this._remoteDescription = null;
-    this.signalingState = 'stable';
-    this.iceConnectionState = 'new';
-    this.connectionState = 'new';
-    this.iceGatheringState = 'new';
-    config = JSON.parse(JSON.stringify(config || {}));
-    this.usingBundle = config.bundlePolicy === 'max-bundle';
-
-    if (config.rtcpMuxPolicy === 'negotiate') {
-      throw makeError('NotSupportedError', 'rtcpMuxPolicy \'negotiate\' is not supported');
-    } else if (!config.rtcpMuxPolicy) {
-      config.rtcpMuxPolicy = 'require';
-    }
-
-    switch (config.iceTransportPolicy) {
-      case 'all':
-      case 'relay':
-        break;
-
-      default:
-        config.iceTransportPolicy = 'all';
-        break;
-    }
-
-    switch (config.bundlePolicy) {
-      case 'balanced':
-      case 'max-compat':
-      case 'max-bundle':
-        break;
-
-      default:
-        config.bundlePolicy = 'balanced';
-        break;
-    }
-
-    config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
-    this._iceGatherers = [];
-
-    if (config.iceCandidatePoolSize) {
-      for (var i = config.iceCandidatePoolSize; i > 0; i--) {
-        this._iceGatherers.push(new window.RTCIceGatherer({
-          iceServers: config.iceServers,
-          gatherPolicy: config.iceTransportPolicy
-        }));
-      }
-    } else {
-      config.iceCandidatePoolSize = 0;
-    }
-
-    this._config = config; // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
-    // everything that is needed to describe a SDP m-line.
-
-    this.transceivers = [];
-    this._sdpSessionId = SDPUtils.generateSessionId();
-    this._sdpSessionVersion = 0;
-    this._dtlsRole = undefined; // role for a=setup to use in answers.
-
-    this._isClosed = false;
-  };
-
-  Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {
-    configurable: true,
-    get: function () {
-      return this._localDescription;
-    }
-  });
-  Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {
-    configurable: true,
-    get: function () {
-      return this._remoteDescription;
-    }
-  }); // set up event handlers on prototype
-
-  RTCPeerConnection.prototype.onicecandidate = null;
-  RTCPeerConnection.prototype.onaddstream = null;
-  RTCPeerConnection.prototype.ontrack = null;
-  RTCPeerConnection.prototype.onremovestream = null;
-  RTCPeerConnection.prototype.onsignalingstatechange = null;
-  RTCPeerConnection.prototype.oniceconnectionstatechange = null;
-  RTCPeerConnection.prototype.onconnectionstatechange = null;
-  RTCPeerConnection.prototype.onicegatheringstatechange = null;
-  RTCPeerConnection.prototype.onnegotiationneeded = null;
-  RTCPeerConnection.prototype.ondatachannel = null;
-
-  RTCPeerConnection.prototype._dispatchEvent = function (name, event) {
-    if (this._isClosed) {
-      return;
-    }
-
-    this.dispatchEvent(event);
-
-    if (typeof this['on' + name] === 'function') {
-      this['on' + name](event);
-    }
-  };
-
-  RTCPeerConnection.prototype._emitGatheringStateChange = function () {
-    var event = new Event('icegatheringstatechange');
-
-    this._dispatchEvent('icegatheringstatechange', event);
-  };
-
-  RTCPeerConnection.prototype.getConfiguration = function () {
-    return this._config;
-  };
-
-  RTCPeerConnection.prototype.getLocalStreams = function () {
-    return this.localStreams;
-  };
-
-  RTCPeerConnection.prototype.getRemoteStreams = function () {
-    return this.remoteStreams;
-  }; // internal helper to create a transceiver object.
-  // (which is not yet the same as the WebRTC 1.0 transceiver)
-
-
-  RTCPeerConnection.prototype._createTransceiver = function (kind, doNotAdd) {
-    var hasBundleTransport = this.transceivers.length > 0;
-    var transceiver = {
-      track: null,
-      iceGatherer: null,
-      iceTransport: null,
-      dtlsTransport: null,
-      localCapabilities: null,
-      remoteCapabilities: null,
-      rtpSender: null,
-      rtpReceiver: null,
-      kind: kind,
-      mid: null,
-      sendEncodingParameters: null,
-      recvEncodingParameters: null,
-      stream: null,
-      associatedRemoteMediaStreams: [],
-      wantReceive: true
-    };
-
-    if (this.usingBundle && hasBundleTransport) {
-      transceiver.iceTransport = this.transceivers[0].iceTransport;
-      transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
-    } else {
-      var transports = this._createIceAndDtlsTransports();
-
-      transceiver.iceTransport = transports.iceTransport;
-      transceiver.dtlsTransport = transports.dtlsTransport;
-    }
-
-    if (!doNotAdd) {
-      this.transceivers.push(transceiver);
-    }
-
-    return transceiver;
-  };
-
-  RTCPeerConnection.prototype.addTrack = function (track, stream) {
-    if (this._isClosed) {
-      throw makeError('InvalidStateError', 'Attempted to call addTrack on a closed peerconnection.');
-    }
-
-    var alreadyExists = this.transceivers.find(function (s) {
-      return s.track === track;
-    });
-
-    if (alreadyExists) {
-      throw makeError('InvalidAccessError', 'Track already exists.');
-    }
-
-    var transceiver;
-
-    for (var i = 0; i < this.transceivers.length; i++) {
-      if (!this.transceivers[i].track && this.transceivers[i].kind === track.kind) {
-        transceiver = this.transceivers[i];
-      }
-    }
-
-    if (!transceiver) {
-      transceiver = this._createTransceiver(track.kind);
-    }
-
-    this._maybeFireNegotiationNeeded();
-
-    if (this.localStreams.indexOf(stream) === -1) {
-      this.localStreams.push(stream);
-    }
-
-    transceiver.track = track;
-    transceiver.stream = stream;
-    transceiver.rtpSender = new window.RTCRtpSender(track, transceiver.dtlsTransport);
-    return transceiver.rtpSender;
-  };
-
-  RTCPeerConnection.prototype.addStream = function (stream) {
-    var pc = this;
-
-    if (edgeVersion >= 15025) {
-      stream.getTracks().forEach(function (track) {
-        pc.addTrack(track, stream);
-      });
-    } else {
-      // Clone is necessary for local demos mostly, attaching directly
-      // to two different senders does not work (build 10547).
-      // Fixed in 15025 (or earlier)
-      var clonedStream = stream.clone();
-      stream.getTracks().forEach(function (track, idx) {
-        var clonedTrack = clonedStream.getTracks()[idx];
-        track.addEventListener('enabled', function (event) {
-          clonedTrack.enabled = event.enabled;
-        });
-      });
-      clonedStream.getTracks().forEach(function (track) {
-        pc.addTrack(track, clonedStream);
-      });
-    }
-  };
-
-  RTCPeerConnection.prototype.removeTrack = function (sender) {
-    if (this._isClosed) {
-      throw makeError('InvalidStateError', 'Attempted to call removeTrack on a closed peerconnection.');
-    }
-
-    if (!(sender instanceof window.RTCRtpSender)) {
-      throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.');
-    }
-
-    var transceiver = this.transceivers.find(function (t) {
-      return t.rtpSender === sender;
-    });
-
-    if (!transceiver) {
-      throw makeError('InvalidAccessError', 'Sender was not created by this connection.');
-    }
-
-    var stream = transceiver.stream;
-    transceiver.rtpSender.stop();
-    transceiver.rtpSender = null;
-    transceiver.track = null;
-    transceiver.stream = null; // remove the stream from the set of local streams
-
-    var localStreams = this.transceivers.map(function (t) {
-      return t.stream;
-    });
-
-    if (localStreams.indexOf(stream) === -1 && this.localStreams.indexOf(stream) > -1) {
-      this.localStreams.splice(this.localStreams.indexOf(stream), 1);
-    }
-
-    this._maybeFireNegotiationNeeded();
-  };
-
-  RTCPeerConnection.prototype.removeStream = function (stream) {
-    var pc = this;
-    stream.getTracks().forEach(function (track) {
-      var sender = pc.getSenders().find(function (s) {
-        return s.track === track;
-      });
-
-      if (sender) {
-        pc.removeTrack(sender);
-      }
-    });
-  };
-
-  RTCPeerConnection.prototype.getSenders = function () {
-    return this.transceivers.filter(function (transceiver) {
-      return !!transceiver.rtpSender;
-    }).map(function (transceiver) {
-      return transceiver.rtpSender;
-    });
-  };
-
-  RTCPeerConnection.prototype.getReceivers = function () {
-    return this.transceivers.filter(function (transceiver) {
-      return !!transceiver.rtpReceiver;
-    }).map(function (transceiver) {
-      return transceiver.rtpReceiver;
-    });
-  };
-
-  RTCPeerConnection.prototype._createIceGatherer = function (sdpMLineIndex, usingBundle) {
-    var pc = this;
-
-    if (usingBundle && sdpMLineIndex > 0) {
-      return this.transceivers[0].iceGatherer;
-    } else if (this._iceGatherers.length) {
-      return this._iceGatherers.shift();
-    }
-
-    var iceGatherer = new window.RTCIceGatherer({
-      iceServers: this._config.iceServers,
-      gatherPolicy: this._config.iceTransportPolicy
-    });
-    Object.defineProperty(iceGatherer, 'state', {
-      value: 'new',
-      writable: true
-    });
-    this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
-
-    this.transceivers[sdpMLineIndex].bufferCandidates = function (event) {
-      var end = !event.candidate || Object.keys(event.candidate).length === 0; // polyfill since RTCIceGatherer.state is not implemented in
-      // Edge 10547 yet.
-
-      iceGatherer.state = end ? 'completed' : 'gathering';
-
-      if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
-        pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
-      }
-    };
-
-    iceGatherer.addEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates);
-    return iceGatherer;
-  }; // start gathering from an RTCIceGatherer.
-
-
-  RTCPeerConnection.prototype._gather = function (mid, sdpMLineIndex) {
-    var pc = this;
-    var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
-
-    if (iceGatherer.onlocalcandidate) {
-      return;
-    }
-
-    var bufferedCandidateEvents = this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
-    this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
-    iceGatherer.removeEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates);
-
-    iceGatherer.onlocalcandidate = function (evt) {
-      if (pc.usingBundle && sdpMLineIndex > 0) {
-        // if we know that we use bundle we can drop candidates with
-        // ѕdpMLineIndex > 0. If we don't do this then our state gets
-        // confused since we dispose the extra ice gatherer.
-        return;
-      }
-
-      var event = new Event('icecandidate');
-      event.candidate = {
-        sdpMid: mid,
-        sdpMLineIndex: sdpMLineIndex
-      };
-      var cand = evt.candidate; // Edge emits an empty object for RTCIceCandidateComplete‥
-
-      var end = !cand || Object.keys(cand).length === 0;
-
-      if (end) {
-        // polyfill since RTCIceGatherer.state is not implemented in
-        // Edge 10547 yet.
-        if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
-          iceGatherer.state = 'completed';
-        }
-      } else {
-        if (iceGatherer.state === 'new') {
-          iceGatherer.state = 'gathering';
-        } // RTCIceCandidate doesn't have a component, needs to be added
-
-
-        cand.component = 1; // also the usernameFragment. TODO: update SDP to take both variants.
-
-        cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;
-        var serializedCandidate = SDPUtils.writeCandidate(cand);
-        event.candidate = Object.assign(event.candidate, SDPUtils.parseCandidate(serializedCandidate));
-        event.candidate.candidate = serializedCandidate;
-
-        event.candidate.toJSON = function () {
-          return {
-            candidate: event.candidate.candidate,
-            sdpMid: event.candidate.sdpMid,
-            sdpMLineIndex: event.candidate.sdpMLineIndex,
-            usernameFragment: event.candidate.usernameFragment
-          };
-        };
-      } // update local description.
-
-
-      var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);
-
-      if (!end) {
-        sections[event.candidate.sdpMLineIndex] += 'a=' + event.candidate.candidate + '\r\n';
-      } else {
-        sections[event.candidate.sdpMLineIndex] += 'a=end-of-candidates\r\n';
-      }
-
-      pc._localDescription.sdp = SDPUtils.getDescription(pc._localDescription.sdp) + sections.join('');
-      var complete = pc.transceivers.every(function (transceiver) {
-        return transceiver.iceGatherer && transceiver.iceGatherer.state === 'completed';
-      });
-
-      if (pc.iceGatheringState !== 'gathering') {
-        pc.iceGatheringState = 'gathering';
-
-        pc._emitGatheringStateChange();
-      } // Emit candidate. Also emit null candidate when all gatherers are
-      // complete.
-
-
-      if (!end) {
-        pc._dispatchEvent('icecandidate', event);
-      }
-
-      if (complete) {
-        pc._dispatchEvent('icecandidate', new Event('icecandidate'));
-
-        pc.iceGatheringState = 'complete';
-
-        pc._emitGatheringStateChange();
-      }
-    }; // emit already gathered candidates.
-
-
-    window.setTimeout(function () {
-      bufferedCandidateEvents.forEach(function (e) {
-        iceGatherer.onlocalcandidate(e);
-      });
-    }, 0);
-  }; // Create ICE transport and DTLS transport.
-
-
-  RTCPeerConnection.prototype._createIceAndDtlsTransports = function () {
-    var pc = this;
-    var iceTransport = new window.RTCIceTransport(null);
-
-    iceTransport.onicestatechange = function () {
-      pc._updateIceConnectionState();
-
-      pc._updateConnectionState();
-    };
-
-    var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
-
-    dtlsTransport.ondtlsstatechange = function () {
-      pc._updateConnectionState();
-    };
-
-    dtlsTransport.onerror = function () {
-      // onerror does not set state to failed by itself.
-      Object.defineProperty(dtlsTransport, 'state', {
-        value: 'failed',
-        writable: true
-      });
-
-      pc._updateConnectionState();
-    };
-
-    return {
-      iceTransport: iceTransport,
-      dtlsTransport: dtlsTransport
-    };
-  }; // Destroy ICE gatherer, ICE transport and DTLS transport.
-  // Without triggering the callbacks.
-
-
-  RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function (sdpMLineIndex) {
-    var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
-
-    if (iceGatherer) {
-      delete iceGatherer.onlocalcandidate;
-      delete this.transceivers[sdpMLineIndex].iceGatherer;
-    }
-
-    var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
-
-    if (iceTransport) {
-      delete iceTransport.onicestatechange;
-      delete this.transceivers[sdpMLineIndex].iceTransport;
-    }
-
-    var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
-
-    if (dtlsTransport) {
-      delete dtlsTransport.ondtlsstatechange;
-      delete dtlsTransport.onerror;
-      delete this.transceivers[sdpMLineIndex].dtlsTransport;
-    }
-  }; // Start the RTP Sender and Receiver for a transceiver.
-
-
-  RTCPeerConnection.prototype._transceive = function (transceiver, send, recv) {
-    var params = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
-
-    if (send && transceiver.rtpSender) {
-      params.encodings = transceiver.sendEncodingParameters;
-      params.rtcp = {
-        cname: SDPUtils.localCName,
-        compound: transceiver.rtcpParameters.compound
-      };
-
-      if (transceiver.recvEncodingParameters.length) {
-        params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
-      }
-
-      transceiver.rtpSender.send(params);
-    }
-
-    if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
-      // remove RTX field in Edge 14942
-      if (transceiver.kind === 'video' && transceiver.recvEncodingParameters && edgeVersion < 15019) {
-        transceiver.recvEncodingParameters.forEach(function (p) {
-          delete p.rtx;
-        });
-      }
-
-      if (transceiver.recvEncodingParameters.length) {
-        params.encodings = transceiver.recvEncodingParameters;
-      } else {
-        params.encodings = [{}];
-      }
-
-      params.rtcp = {
-        compound: transceiver.rtcpParameters.compound
-      };
-
-      if (transceiver.rtcpParameters.cname) {
-        params.rtcp.cname = transceiver.rtcpParameters.cname;
-      }
-
-      if (transceiver.sendEncodingParameters.length) {
-        params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
-      }
-
-      transceiver.rtpReceiver.receive(params);
-    }
-  };
-
-  RTCPeerConnection.prototype.setLocalDescription = function (description) {
-    var pc = this; // Note: pranswer is not supported.
-
-    if (['offer', 'answer'].indexOf(description.type) === -1) {
-      return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"'));
-    }
-
-    if (!isActionAllowedInSignalingState('setLocalDescription', description.type, pc.signalingState) || pc._isClosed) {
-      return Promise.reject(makeError('InvalidStateError', 'Can not set local ' + description.type + ' in state ' + pc.signalingState));
-    }
-
-    var sections;
-    var sessionpart;
-
-    if (description.type === 'offer') {
-      // VERY limited support for SDP munging. Limited to:
-      // * changing the order of codecs
-      sections = SDPUtils.splitSections(description.sdp);
-      sessionpart = sections.shift();
-      sections.forEach(function (mediaSection, sdpMLineIndex) {
-        var caps = SDPUtils.parseRtpParameters(mediaSection);
-        pc.transceivers[sdpMLineIndex].localCapabilities = caps;
-      });
-      pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
-        pc._gather(transceiver.mid, sdpMLineIndex);
-      });
-    } else if (description.type === 'answer') {
-      sections = SDPUtils.splitSections(pc._remoteDescription.sdp);
-      sessionpart = sections.shift();
-      var isIceLite = SDPUtils.matchPrefix(sessionpart, 'a=ice-lite').length > 0;
-      sections.forEach(function (mediaSection, sdpMLineIndex) {
-        var transceiver = pc.transceivers[sdpMLineIndex];
-        var iceGatherer = transceiver.iceGatherer;
-        var iceTransport = transceiver.iceTransport;
-        var dtlsTransport = transceiver.dtlsTransport;
-        var localCapabilities = transceiver.localCapabilities;
-        var remoteCapabilities = transceiver.remoteCapabilities; // treat bundle-only as not-rejected.
-
-        var rejected = SDPUtils.isRejected(mediaSection) && SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
-
-        if (!rejected && !transceiver.rejected) {
-          var remoteIceParameters = SDPUtils.getIceParameters(mediaSection, sessionpart);
-          var remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, sessionpart);
-
-          if (isIceLite) {
-            remoteDtlsParameters.role = 'server';
-          }
-
-          if (!pc.usingBundle || sdpMLineIndex === 0) {
-            pc._gather(transceiver.mid, sdpMLineIndex);
-
-            if (iceTransport.state === 'new') {
-              iceTransport.start(iceGatherer, remoteIceParameters, isIceLite ? 'controlling' : 'controlled');
-            }
-
-            if (dtlsTransport.state === 'new') {
-              dtlsTransport.start(remoteDtlsParameters);
-            }
-          } // Calculate intersection of capabilities.
-
-
-          var params = getCommonCapabilities(localCapabilities, remoteCapabilities); // Start the RTCRtpSender. The RTCRtpReceiver for this
-          // transceiver has already been started in setRemoteDescription.
-
-          pc._transceive(transceiver, params.codecs.length > 0, false);
-        }
-      });
-    }
-
-    pc._localDescription = {
-      type: description.type,
-      sdp: description.sdp
-    };
-
-    if (description.type === 'offer') {
-      pc._updateSignalingState('have-local-offer');
-    } else {
-      pc._updateSignalingState('stable');
-    }
-
-    return Promise.resolve();
-  };
-
-  RTCPeerConnection.prototype.setRemoteDescription = function (description) {
-    var pc = this; // Note: pranswer is not supported.
-
-    if (['offer', 'answer'].indexOf(description.type) === -1) {
-      return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"'));
-    }
-
-    if (!isActionAllowedInSignalingState('setRemoteDescription', description.type, pc.signalingState) || pc._isClosed) {
-      return Promise.reject(makeError('InvalidStateError', 'Can not set remote ' + description.type + ' in state ' + pc.signalingState));
-    }
-
-    var streams = {};
-    pc.remoteStreams.forEach(function (stream) {
-      streams[stream.id] = stream;
-    });
-    var receiverList = [];
-    var sections = SDPUtils.splitSections(description.sdp);
-    var sessionpart = sections.shift();
-    var isIceLite = SDPUtils.matchPrefix(sessionpart, 'a=ice-lite').length > 0;
-    var usingBundle = SDPUtils.matchPrefix(sessionpart, 'a=group:BUNDLE ').length > 0;
-    pc.usingBundle = usingBundle;
-    var iceOptions = SDPUtils.matchPrefix(sessionpart, 'a=ice-options:')[0];
-
-    if (iceOptions) {
-      pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ').indexOf('trickle') >= 0;
-    } else {
-      pc.canTrickleIceCandidates = false;
-    }
-
-    sections.forEach(function (mediaSection, sdpMLineIndex) {
-      var lines = SDPUtils.splitLines(mediaSection);
-      var kind = SDPUtils.getKind(mediaSection); // treat bundle-only as not-rejected.
-
-      var rejected = SDPUtils.isRejected(mediaSection) && SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
-      var protocol = lines[0].substr(2).split(' ')[2];
-      var direction = SDPUtils.getDirection(mediaSection, sessionpart);
-      var remoteMsid = SDPUtils.parseMsid(mediaSection);
-      var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier(); // Reject datachannels which are not implemented yet.
-
-      if (rejected || kind === 'application' && (protocol === 'DTLS/SCTP' || protocol === 'UDP/DTLS/SCTP')) {
-        // TODO: this is dangerous in the case where a non-rejected m-line
-        //     becomes rejected.
-        pc.transceivers[sdpMLineIndex] = {
-          mid: mid,
-          kind: kind,
-          protocol: protocol,
-          rejected: true
-        };
-        return;
-      }
-
-      if (!rejected && pc.transceivers[sdpMLineIndex] && pc.transceivers[sdpMLineIndex].rejected) {
-        // recycle a rejected transceiver.
-        pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
-      }
-
-      var transceiver;
-      var iceGatherer;
-      var iceTransport;
-      var dtlsTransport;
-      var rtpReceiver;
-      var sendEncodingParameters;
-      var recvEncodingParameters;
-      var localCapabilities;
-      var track; // FIXME: ensure the mediaSection has rtcp-mux set.
-
-      var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
-      var remoteIceParameters;
-      var remoteDtlsParameters;
-
-      if (!rejected) {
-        remoteIceParameters = SDPUtils.getIceParameters(mediaSection, sessionpart);
-        remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, sessionpart);
-        remoteDtlsParameters.role = 'client';
-      }
-
-      recvEncodingParameters = SDPUtils.parseRtpEncodingParameters(mediaSection);
-      var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);
-      var isComplete = SDPUtils.matchPrefix(mediaSection, 'a=end-of-candidates', sessionpart).length > 0;
-      var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:').map(function (cand) {
-        return SDPUtils.parseCandidate(cand);
-      }).filter(function (cand) {
-        return cand.component === 1;
-      }); // Check if we can use BUNDLE and dispose transports.
-
-      if ((description.type === 'offer' || description.type === 'answer') && !rejected && usingBundle && sdpMLineIndex > 0 && pc.transceivers[sdpMLineIndex]) {
-        pc._disposeIceAndDtlsTransports(sdpMLineIndex);
-
-        pc.transceivers[sdpMLineIndex].iceGatherer = pc.transceivers[0].iceGatherer;
-        pc.transceivers[sdpMLineIndex].iceTransport = pc.transceivers[0].iceTransport;
-        pc.transceivers[sdpMLineIndex].dtlsTransport = pc.transceivers[0].dtlsTransport;
-
-        if (pc.transceivers[sdpMLineIndex].rtpSender) {
-          pc.transceivers[sdpMLineIndex].rtpSender.setTransport(pc.transceivers[0].dtlsTransport);
-        }
-
-        if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
-          pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(pc.transceivers[0].dtlsTransport);
-        }
-      }
-
-      if (description.type === 'offer' && !rejected) {
-        transceiver = pc.transceivers[sdpMLineIndex] || pc._createTransceiver(kind);
-        transceiver.mid = mid;
-
-        if (!transceiver.iceGatherer) {
-          transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, usingBundle);
-        }
-
-        if (cands.length && transceiver.iceTransport.state === 'new') {
-          if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
-            transceiver.iceTransport.setRemoteCandidates(cands);
-          } else {
-            cands.forEach(function (candidate) {
-              maybeAddCandidate(transceiver.iceTransport, candidate);
-            });
-          }
-        }
-
-        localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented
-        // in adapter.js
-
-        if (edgeVersion < 15019) {
-          localCapabilities.codecs = localCapabilities.codecs.filter(function (codec) {
-            return codec.name !== 'rtx';
-          });
-        }
-
-        sendEncodingParameters = transceiver.sendEncodingParameters || [{
-          ssrc: (2 * sdpMLineIndex + 2) * 1001
-        }]; // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
-
-        var isNewTrack = false;
-
-        if (direction === 'sendrecv' || direction === 'sendonly') {
-          isNewTrack = !transceiver.rtpReceiver;
-          rtpReceiver = transceiver.rtpReceiver || new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
-
-          if (isNewTrack) {
-            var stream;
-            track = rtpReceiver.track; // FIXME: does not work with Plan B.
-
-            if (remoteMsid && remoteMsid.stream === '-') {// no-op. a stream id of '-' means: no associated stream.
-            } else if (remoteMsid) {
-              if (!streams[remoteMsid.stream]) {
-                streams[remoteMsid.stream] = new window.MediaStream();
-                Object.defineProperty(streams[remoteMsid.stream], 'id', {
-                  get: function () {
-                    return remoteMsid.stream;
-                  }
-                });
-              }
-
-              Object.defineProperty(track, 'id', {
-                get: function () {
-                  return remoteMsid.track;
-                }
-              });
-              stream = streams[remoteMsid.stream];
-            } else {
-              if (!streams.default) {
-                streams.default = new window.MediaStream();
-              }
-
-              stream = streams.default;
-            }
-
-            if (stream) {
-              addTrackToStreamAndFireEvent(track, stream);
-              transceiver.associatedRemoteMediaStreams.push(stream);
-            }
-
-            receiverList.push([track, rtpReceiver, stream]);
-          }
-        } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
-          transceiver.associatedRemoteMediaStreams.forEach(function (s) {
-            var nativeTrack = s.getTracks().find(function (t) {
-              return t.id === transceiver.rtpReceiver.track.id;
-            });
-
-            if (nativeTrack) {
-              removeTrackFromStreamAndFireEvent(nativeTrack, s);
-            }
-          });
-          transceiver.associatedRemoteMediaStreams = [];
-        }
-
-        transceiver.localCapabilities = localCapabilities;
-        transceiver.remoteCapabilities = remoteCapabilities;
-        transceiver.rtpReceiver = rtpReceiver;
-        transceiver.rtcpParameters = rtcpParameters;
-        transceiver.sendEncodingParameters = sendEncodingParameters;
-        transceiver.recvEncodingParameters = recvEncodingParameters; // Start the RTCRtpReceiver now. The RTPSender is started in
-        // setLocalDescription.
-
-        pc._transceive(pc.transceivers[sdpMLineIndex], false, isNewTrack);
-      } else if (description.type === 'answer' && !rejected) {
-        transceiver = pc.transceivers[sdpMLineIndex];
-        iceGatherer = transceiver.iceGatherer;
-        iceTransport = transceiver.iceTransport;
-        dtlsTransport = transceiver.dtlsTransport;
-        rtpReceiver = transceiver.rtpReceiver;
-        sendEncodingParameters = transceiver.sendEncodingParameters;
-        localCapabilities = transceiver.localCapabilities;
-        pc.transceivers[sdpMLineIndex].recvEncodingParameters = recvEncodingParameters;
-        pc.transceivers[sdpMLineIndex].remoteCapabilities = remoteCapabilities;
-        pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;
-
-        if (cands.length && iceTransport.state === 'new') {
-          if ((isIceLite || isComplete) && (!usingBundle || sdpMLineIndex === 0)) {
-            iceTransport.setRemoteCandidates(cands);
-          } else {
-            cands.forEach(function (candidate) {
-              maybeAddCandidate(transceiver.iceTransport, candidate);
-            });
-          }
-        }
-
-        if (!usingBundle || sdpMLineIndex === 0) {
-          if (iceTransport.state === 'new') {
-            iceTransport.start(iceGatherer, remoteIceParameters, 'controlling');
-          }
-
-          if (dtlsTransport.state === 'new') {
-            dtlsTransport.start(remoteDtlsParameters);
-          }
-        } // If the offer contained RTX but the answer did not,
-        // remove RTX from sendEncodingParameters.
-
-
-        var commonCapabilities = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
-        var hasRtx = commonCapabilities.codecs.filter(function (c) {
-          return c.name.toLowerCase() === 'rtx';
-        }).length;
-
-        if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
-          delete transceiver.sendEncodingParameters[0].rtx;
-        }
-
-        pc._transceive(transceiver, direction === 'sendrecv' || direction === 'recvonly', direction === 'sendrecv' || direction === 'sendonly'); // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
-
-
-        if (rtpReceiver && (direction === 'sendrecv' || direction === 'sendonly')) {
-          track = rtpReceiver.track;
-
-          if (remoteMsid) {
-            if (!streams[remoteMsid.stream]) {
-              streams[remoteMsid.stream] = new window.MediaStream();
-            }
-
-            addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
-            receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
-          } else {
-            if (!streams.default) {
-              streams.default = new window.MediaStream();
-            }
-
-            addTrackToStreamAndFireEvent(track, streams.default);
-            receiverList.push([track, rtpReceiver, streams.default]);
-          }
-        } else {
-          // FIXME: actually the receiver should be created later.
-          delete transceiver.rtpReceiver;
-        }
-      }
-    });
-
-    if (pc._dtlsRole === undefined) {
-      pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
-    }
-
-    pc._remoteDescription = {
-      type: description.type,
-      sdp: description.sdp
-    };
-
-    if (description.type === 'offer') {
-      pc._updateSignalingState('have-remote-offer');
-    } else {
-      pc._updateSignalingState('stable');
-    }
-
-    Object.keys(streams).forEach(function (sid) {
-      var stream = streams[sid];
-
-      if (stream.getTracks().length) {
-        if (pc.remoteStreams.indexOf(stream) === -1) {
-          pc.remoteStreams.push(stream);
-          var event = new Event('addstream');
-          event.stream = stream;
-          window.setTimeout(function () {
-            pc._dispatchEvent('addstream', event);
-          });
-        }
-
-        receiverList.forEach(function (item) {
-          var track = item[0];
-          var receiver = item[1];
-
-          if (stream.id !== item[2].id) {
-            return;
-          }
-
-          fireAddTrack(pc, track, receiver, [stream]);
-        });
-      }
-    });
-    receiverList.forEach(function (item) {
-      if (item[2]) {
-        return;
-      }
-
-      fireAddTrack(pc, item[0], item[1], []);
-    }); // check whether addIceCandidate({}) was called within four seconds after
-    // setRemoteDescription.
-
-    window.setTimeout(function () {
-      if (!(pc && pc.transceivers)) {
-        return;
-      }
-
-      pc.transceivers.forEach(function (transceiver) {
-        if (transceiver.iceTransport && transceiver.iceTransport.state === 'new' && transceiver.iceTransport.getRemoteCandidates().length > 0) {
-          console.warn('Timeout for addRemoteCandidate. Consider sending ' + 'an end-of-candidates notification');
-          transceiver.iceTransport.addRemoteCandidate({});
-        }
-      });
-    }, 4000);
-    return Promise.resolve();
-  };
-
-  RTCPeerConnection.prototype.close = function () {
-    this.transceivers.forEach(function (transceiver) {
-      /* not yet
-      if (transceiver.iceGatherer) {
-        transceiver.iceGatherer.close();
-      }
-      */
-      if (transceiver.iceTransport) {
-        transceiver.iceTransport.stop();
-      }
-
-      if (transceiver.dtlsTransport) {
-        transceiver.dtlsTransport.stop();
-      }
-
-      if (transceiver.rtpSender) {
-        transceiver.rtpSender.stop();
-      }
-
-      if (transceiver.rtpReceiver) {
-        transceiver.rtpReceiver.stop();
-      }
-    }); // FIXME: clean up tracks, local streams, remote streams, etc
-
-    this._isClosed = true;
-
-    this._updateSignalingState('closed');
-  }; // Update the signaling state.
-
-
-  RTCPeerConnection.prototype._updateSignalingState = function (newState) {
-    this.signalingState = newState;
-    var event = new Event('signalingstatechange');
-
-    this._dispatchEvent('signalingstatechange', event);
-  }; // Determine whether to fire the negotiationneeded event.
-
-
-  RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function () {
-    var pc = this;
-
-    if (this.signalingState !== 'stable' || this.needNegotiation === true) {
-      return;
-    }
-
-    this.needNegotiation = true;
-    window.setTimeout(function () {
-      if (pc.needNegotiation) {
-        pc.needNegotiation = false;
-        var event = new Event('negotiationneeded');
-
-        pc._dispatchEvent('negotiationneeded', event);
-      }
-    }, 0);
-  }; // Update the ice connection state.
-
-
-  RTCPeerConnection.prototype._updateIceConnectionState = function () {
-    var newState;
-    var states = {
-      'new': 0,
-      closed: 0,
-      checking: 0,
-      connected: 0,
-      completed: 0,
-      disconnected: 0,
-      failed: 0
-    };
-    this.transceivers.forEach(function (transceiver) {
-      if (transceiver.iceTransport && !transceiver.rejected) {
-        states[transceiver.iceTransport.state]++;
-      }
-    });
-    newState = 'new';
-
-    if (states.failed > 0) {
-      newState = 'failed';
-    } else if (states.checking > 0) {
-      newState = 'checking';
-    } else if (states.disconnected > 0) {
-      newState = 'disconnected';
-    } else if (states.new > 0) {
-      newState = 'new';
-    } else if (states.connected > 0) {
-      newState = 'connected';
-    } else if (states.completed > 0) {
-      newState = 'completed';
-    }
-
-    if (newState !== this.iceConnectionState) {
-      this.iceConnectionState = newState;
-      var event = new Event('iceconnectionstatechange');
-
-      this._dispatchEvent('iceconnectionstatechange', event);
-    }
-  }; // Update the connection state.
-
-
-  RTCPeerConnection.prototype._updateConnectionState = function () {
-    var newState;
-    var states = {
-      'new': 0,
-      closed: 0,
-      connecting: 0,
-      connected: 0,
-      completed: 0,
-      disconnected: 0,
-      failed: 0
-    };
-    this.transceivers.forEach(function (transceiver) {
-      if (transceiver.iceTransport && transceiver.dtlsTransport && !transceiver.rejected) {
-        states[transceiver.iceTransport.state]++;
-        states[transceiver.dtlsTransport.state]++;
-      }
-    }); // ICETransport.completed and connected are the same for this purpose.
-
-    states.connected += states.completed;
-    newState = 'new';
-
-    if (states.failed > 0) {
-      newState = 'failed';
-    } else if (states.connecting > 0) {
-      newState = 'connecting';
-    } else if (states.disconnected > 0) {
-      newState = 'disconnected';
-    } else if (states.new > 0) {
-      newState = 'new';
-    } else if (states.connected > 0) {
-      newState = 'connected';
-    }
-
-    if (newState !== this.connectionState) {
-      this.connectionState = newState;
-      var event = new Event('connectionstatechange');
-
-      this._dispatchEvent('connectionstatechange', event);
-    }
-  };
-
-  RTCPeerConnection.prototype.createOffer = function () {
-    var pc = this;
-
-    if (pc._isClosed) {
-      return Promise.reject(makeError('InvalidStateError', 'Can not call createOffer after close'));
-    }
-
-    var numAudioTracks = pc.transceivers.filter(function (t) {
-      return t.kind === 'audio';
-    }).length;
-    var numVideoTracks = pc.transceivers.filter(function (t) {
-      return t.kind === 'video';
-    }).length; // Determine number of audio and video tracks we need to send/recv.
-
-    var offerOptions = arguments[0];
-
-    if (offerOptions) {
-      // Reject Chrome legacy constraints.
-      if (offerOptions.mandatory || offerOptions.optional) {
-        throw new TypeError('Legacy mandatory/optional constraints not supported.');
-      }
-
-      if (offerOptions.offerToReceiveAudio !== undefined) {
-        if (offerOptions.offerToReceiveAudio === true) {
-          numAudioTracks = 1;
-        } else if (offerOptions.offerToReceiveAudio === false) {
-          numAudioTracks = 0;
-        } else {
-          numAudioTracks = offerOptions.offerToReceiveAudio;
-        }
-      }
-
-      if (offerOptions.offerToReceiveVideo !== undefined) {
-        if (offerOptions.offerToReceiveVideo === true) {
-          numVideoTracks = 1;
-        } else if (offerOptions.offerToReceiveVideo === false) {
-          numVideoTracks = 0;
-        } else {
-          numVideoTracks = offerOptions.offerToReceiveVideo;
-        }
-      }
-    }
-
-    pc.transceivers.forEach(function (transceiver) {
-      if (transceiver.kind === 'audio') {
-        numAudioTracks--;
-
-        if (numAudioTracks < 0) {
-          transceiver.wantReceive = false;
-        }
-      } else if (transceiver.kind === 'video') {
-        numVideoTracks--;
-
-        if (numVideoTracks < 0) {
-          transceiver.wantReceive = false;
-        }
-      }
-    }); // Create M-lines for recvonly streams.
-
-    while (numAudioTracks > 0 || numVideoTracks > 0) {
-      if (numAudioTracks > 0) {
-        pc._createTransceiver('audio');
-
-        numAudioTracks--;
-      }
-
-      if (numVideoTracks > 0) {
-        pc._createTransceiver('video');
-
-        numVideoTracks--;
-      }
-    }
-
-    var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++);
-    pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
-      // For each track, create an ice gatherer, ice transport,
-      // dtls transport, potentially rtpsender and rtpreceiver.
-      var track = transceiver.track;
-      var kind = transceiver.kind;
-      var mid = transceiver.mid || SDPUtils.generateIdentifier();
-      transceiver.mid = mid;
-
-      if (!transceiver.iceGatherer) {
-        transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, pc.usingBundle);
-      }
-
-      var localCapabilities = window.RTCRtpSender.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented
-      // in adapter.js
-
-      if (edgeVersion < 15019) {
-        localCapabilities.codecs = localCapabilities.codecs.filter(function (codec) {
-          return codec.name !== 'rtx';
-        });
-      }
-
-      localCapabilities.codecs.forEach(function (codec) {
-        // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
-        // by adding level-asymmetry-allowed=1
-        if (codec.name === 'H264' && codec.parameters['level-asymmetry-allowed'] === undefined) {
-          codec.parameters['level-asymmetry-allowed'] = '1';
-        } // for subsequent offers, we might have to re-use the payload
-        // type of the last offer.
-
-
-        if (transceiver.remoteCapabilities && transceiver.remoteCapabilities.codecs) {
-          transceiver.remoteCapabilities.codecs.forEach(function (remoteCodec) {
-            if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() && codec.clockRate === remoteCodec.clockRate) {
-              codec.preferredPayloadType = remoteCodec.payloadType;
-            }
-          });
-        }
-      });
-      localCapabilities.headerExtensions.forEach(function (hdrExt) {
-        var remoteExtensions = transceiver.remoteCapabilities && transceiver.remoteCapabilities.headerExtensions || [];
-        remoteExtensions.forEach(function (rHdrExt) {
-          if (hdrExt.uri === rHdrExt.uri) {
-            hdrExt.id = rHdrExt.id;
-          }
-        });
-      }); // generate an ssrc now, to be used later in rtpSender.send
-
-      var sendEncodingParameters = transceiver.sendEncodingParameters || [{
-        ssrc: (2 * sdpMLineIndex + 1) * 1001
-      }];
-
-      if (track) {
-        // add RTX
-        if (edgeVersion >= 15019 && kind === 'video' && !sendEncodingParameters[0].rtx) {
-          sendEncodingParameters[0].rtx = {
-            ssrc: sendEncodingParameters[0].ssrc + 1
-          };
-        }
-      }
-
-      if (transceiver.wantReceive) {
-        transceiver.rtpReceiver = new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
-      }
-
-      transceiver.localCapabilities = localCapabilities;
-      transceiver.sendEncodingParameters = sendEncodingParameters;
-    }); // always offer BUNDLE and dispose on return if not supported.
-
-    if (pc._config.bundlePolicy !== 'max-compat') {
-      sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function (t) {
-        return t.mid;
-      }).join(' ') + '\r\n';
-    }
-
-    sdp += 'a=ice-options:trickle\r\n';
-    pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
-      sdp += writeMediaSection(transceiver, transceiver.localCapabilities, 'offer', transceiver.stream, pc._dtlsRole);
-      sdp += 'a=rtcp-rsize\r\n';
-
-      if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' && (sdpMLineIndex === 0 || !pc.usingBundle)) {
-        transceiver.iceGatherer.getLocalCandidates().forEach(function (cand) {
-          cand.component = 1;
-          sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
-        });
-
-        if (transceiver.iceGatherer.state === 'completed') {
-          sdp += 'a=end-of-candidates\r\n';
-        }
-      }
-    });
-    var desc = new window.RTCSessionDescription({
-      type: 'offer',
-      sdp: sdp
-    });
-    return Promise.resolve(desc);
-  };
-
-  RTCPeerConnection.prototype.createAnswer = function () {
-    var pc = this;
-
-    if (pc._isClosed) {
-      return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer after close'));
-    }
-
-    if (!(pc.signalingState === 'have-remote-offer' || pc.signalingState === 'have-local-pranswer')) {
-      return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer in signalingState ' + pc.signalingState));
-    }
-
-    var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++);
-
-    if (pc.usingBundle) {
-      sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function (t) {
-        return t.mid;
-      }).join(' ') + '\r\n';
-    }
-
-    sdp += 'a=ice-options:trickle\r\n';
-    var mediaSectionsInOffer = SDPUtils.getMediaSections(pc._remoteDescription.sdp).length;
-    pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
-      if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
-        return;
-      }
-
-      if (transceiver.rejected) {
-        if (transceiver.kind === 'application') {
-          if (transceiver.protocol === 'DTLS/SCTP') {
-            // legacy fmt
-            sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
-          } else {
-            sdp += 'm=application 0 ' + transceiver.protocol + ' webrtc-datachannel\r\n';
-          }
-        } else if (transceiver.kind === 'audio') {
-          sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' + 'a=rtpmap:0 PCMU/8000\r\n';
-        } else if (transceiver.kind === 'video') {
-          sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' + 'a=rtpmap:120 VP8/90000\r\n';
-        }
-
-        sdp += 'c=IN IP4 0.0.0.0\r\n' + 'a=inactive\r\n' + 'a=mid:' + transceiver.mid + '\r\n';
-        return;
-      } // FIXME: look at direction.
-
-
-      if (transceiver.stream) {
-        var localTrack;
-
-        if (transceiver.kind === 'audio') {
-          localTrack = transceiver.stream.getAudioTracks()[0];
-        } else if (transceiver.kind === 'video') {
-          localTrack = transceiver.stream.getVideoTracks()[0];
-        }
-
-        if (localTrack) {
-          // add RTX
-          if (edgeVersion >= 15019 && transceiver.kind === 'video' && !transceiver.sendEncodingParameters[0].rtx) {
-            transceiver.sendEncodingParameters[0].rtx = {
-              ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
-            };
-          }
-        }
-      } // Calculate intersection of capabilities.
-
-
-      var commonCapabilities = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
-      var hasRtx = commonCapabilities.codecs.filter(function (c) {
-        return c.name.toLowerCase() === 'rtx';
-      }).length;
-
-      if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
-        delete transceiver.sendEncodingParameters[0].rtx;
-      }
-
-      sdp += writeMediaSection(transceiver, commonCapabilities, 'answer', transceiver.stream, pc._dtlsRole);
-
-      if (transceiver.rtcpParameters && transceiver.rtcpParameters.reducedSize) {
-        sdp += 'a=rtcp-rsize\r\n';
-      }
-    });
-    var desc = new window.RTCSessionDescription({
-      type: 'answer',
-      sdp: sdp
-    });
-    return Promise.resolve(desc);
-  };
-
-  RTCPeerConnection.prototype.addIceCandidate = function (candidate) {
-    var pc = this;
-    var sections;
-
-    if (candidate && !(candidate.sdpMLineIndex !== undefined || candidate.sdpMid)) {
-      return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
-    } // TODO: needs to go into ops queue.
-
-
-    return new Promise(function (resolve, reject) {
-      if (!pc._remoteDescription) {
-        return reject(makeError('InvalidStateError', 'Can not add ICE candidate without a remote description'));
-      } else if (!candidate || candidate.candidate === '') {
-        for (var j = 0; j < pc.transceivers.length; j++) {
-          if (pc.transceivers[j].rejected) {
-            continue;
-          }
-
-          pc.transceivers[j].iceTransport.addRemoteCandidate({});
-          sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
-          sections[j] += 'a=end-of-candidates\r\n';
-          pc._remoteDescription.sdp = SDPUtils.getDescription(pc._remoteDescription.sdp) + sections.join('');
-
-          if (pc.usingBundle) {
-            break;
-          }
-        }
-      } else {
-        var sdpMLineIndex = candidate.sdpMLineIndex;
-
-        if (candidate.sdpMid) {
-          for (var i = 0; i < pc.transceivers.length; i++) {
-            if (pc.transceivers[i].mid === candidate.sdpMid) {
-              sdpMLineIndex = i;
-              break;
-            }
-          }
-        }
-
-        var transceiver = pc.transceivers[sdpMLineIndex];
-
-        if (transceiver) {
-          if (transceiver.rejected) {
-            return resolve();
-          }
-
-          var cand = Object.keys(candidate.candidate).length > 0 ? SDPUtils.parseCandidate(candidate.candidate) : {}; // Ignore Chrome's invalid candidates since Edge does not like them.
-
-          if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
-            return resolve();
-          } // Ignore RTCP candidates, we assume RTCP-MUX.
-
-
-          if (cand.component && cand.component !== 1) {
-            return resolve();
-          } // when using bundle, avoid adding candidates to the wrong
-          // ice transport. And avoid adding candidates added in the SDP.
-
-
-          if (sdpMLineIndex === 0 || sdpMLineIndex > 0 && transceiver.iceTransport !== pc.transceivers[0].iceTransport) {
-            if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
-              return reject(makeError('OperationError', 'Can not add ICE candidate'));
-            }
-          } // update the remoteDescription.
-
-
-          var candidateString = candidate.candidate.trim();
-
-          if (candidateString.indexOf('a=') === 0) {
-            candidateString = candidateString.substr(2);
-          }
-
-          sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
-          sections[sdpMLineIndex] += 'a=' + (cand.type ? candidateString : 'end-of-candidates') + '\r\n';
-          pc._remoteDescription.sdp = SDPUtils.getDescription(pc._remoteDescription.sdp) + sections.join('');
-        } else {
-          return reject(makeError('OperationError', 'Can not add ICE candidate'));
-        }
-      }
-
-      resolve();
-    });
-  };
-
-  RTCPeerConnection.prototype.getStats = function (selector) {
-    if (selector && selector instanceof window.MediaStreamTrack) {
-      var senderOrReceiver = null;
-      this.transceivers.forEach(function (transceiver) {
-        if (transceiver.rtpSender && transceiver.rtpSender.track === selector) {
-          senderOrReceiver = transceiver.rtpSender;
-        } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track === selector) {
-          senderOrReceiver = transceiver.rtpReceiver;
-        }
-      });
-
-      if (!senderOrReceiver) {
-        throw makeError('InvalidAccessError', 'Invalid selector.');
-      }
-
-      return senderOrReceiver.getStats();
-    }
-
-    var promises = [];
-    this.transceivers.forEach(function (transceiver) {
-      ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', 'dtlsTransport'].forEach(function (method) {
-        if (transceiver[method]) {
-          promises.push(transceiver[method].getStats());
-        }
-      });
-    });
-    return Promise.all(promises).then(function (allStats) {
-      var results = new Map();
-      allStats.forEach(function (stats) {
-        stats.forEach(function (stat) {
-          results.set(stat.id, stat);
-        });
-      });
-      return results;
-    });
-  }; // fix low-level stat names and return Map instead of object.
-
-
-  var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer', 'RTCIceTransport', 'RTCDtlsTransport'];
-  ortcObjects.forEach(function (ortcObjectName) {
-    var obj = window[ortcObjectName];
-
-    if (obj && obj.prototype && obj.prototype.getStats) {
-      var nativeGetstats = obj.prototype.getStats;
-
-      obj.prototype.getStats = function () {
-        return nativeGetstats.apply(this).then(function (nativeStats) {
-          var mapStats = new Map();
-          Object.keys(nativeStats).forEach(function (id) {
-            nativeStats[id].type = fixStatsType(nativeStats[id]);
-            mapStats.set(id, nativeStats[id]);
-          });
-          return mapStats;
-        });
-      };
-    }
-  }); // legacy callback shims. Should be moved to adapter.js some days.
-
-  var methods = ['createOffer', 'createAnswer'];
-  methods.forEach(function (method) {
-    var nativeMethod = RTCPeerConnection.prototype[method];
-
-    RTCPeerConnection.prototype[method] = function () {
-      var args = arguments;
-
-      if (typeof args[0] === 'function' || typeof args[1] === 'function') {
-        // legacy
-        return nativeMethod.apply(this, [arguments[2]]).then(function (description) {
-          if (typeof args[0] === 'function') {
-            args[0].apply(null, [description]);
-          }
-        }, function (error) {
-          if (typeof args[1] === 'function') {
-            args[1].apply(null, [error]);
-          }
-        });
-      }
-
-      return nativeMethod.apply(this, arguments);
-    };
-  });
-  methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
-  methods.forEach(function (method) {
-    var nativeMethod = RTCPeerConnection.prototype[method];
-
-    RTCPeerConnection.prototype[method] = function () {
-      var args = arguments;
-
-      if (typeof args[1] === 'function' || typeof args[2] === 'function') {
-        // legacy
-        return nativeMethod.apply(this, arguments).then(function () {
-          if (typeof args[1] === 'function') {
-            args[1].apply(null);
-          }
-        }, function (error) {
-          if (typeof args[2] === 'function') {
-            args[2].apply(null, [error]);
-          }
-        });
-      }
-
-      return nativeMethod.apply(this, arguments);
-    };
-  }); // getStats is special. It doesn't have a spec legacy method yet we support
-  // getStats(something, cb) without error callbacks.
-
-  ['getStats'].forEach(function (method) {
-    var nativeMethod = RTCPeerConnection.prototype[method];
-
-    RTCPeerConnection.prototype[method] = function () {
-      var args = arguments;
-
-      if (typeof args[1] === 'function') {
-        return nativeMethod.apply(this, arguments).then(function () {
-          if (typeof args[1] === 'function') {
-            args[1].apply(null);
-          }
-        });
-      }
-
-      return nativeMethod.apply(this, arguments);
-    };
-  });
-  return RTCPeerConnection;
-};
-},{"sdp":"YHvh"}],"YdKx":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-function shimGetUserMedia(window) {
-  var navigator = window && window.navigator;
-
-  var shimError_ = function (e) {
-    return {
-      name: {
-        PermissionDeniedError: 'NotAllowedError'
-      }[e.name] || e.name,
-      message: e.message,
-      constraint: e.constraint,
-      toString: function () {
-        return this.name;
-      }
-    };
-  }; // getUserMedia error shim.
-
-
-  var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
-  navigator.mediaDevices.getUserMedia = function (c) {
-    return origGetUserMedia(c).catch(function (e) {
-      return Promise.reject(shimError_(e));
-    });
-  };
-}
-},{}],"P3bV":[function(require,module,exports) {
-/*
- *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window) {
-  if (!('getDisplayMedia' in window.navigator)) {
-    return;
-  }
-
-  if (!window.navigator.mediaDevices) {
-    return;
-  }
-
-  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
-    return;
-  }
-
-  window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator);
-}
-},{}],"XRic":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimPeerConnection = shimPeerConnection;
-exports.shimReplaceTrack = shimReplaceTrack;
-Object.defineProperty(exports, "shimGetUserMedia", {
-  enumerable: true,
-  get: function () {
-    return _getusermedia.shimGetUserMedia;
-  }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
-  enumerable: true,
-  get: function () {
-    return _getdisplaymedia.shimGetDisplayMedia;
-  }
-});
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-var _filtericeservers = require("./filtericeservers");
-
-var _rtcpeerconnectionShim = _interopRequireDefault(require("rtcpeerconnection-shim"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function shimPeerConnection(window, browserDetails) {
-  if (window.RTCIceGatherer) {
-    if (!window.RTCIceCandidate) {
-      window.RTCIceCandidate = function RTCIceCandidate(args) {
-        return args;
-      };
-    }
-
-    if (!window.RTCSessionDescription) {
-      window.RTCSessionDescription = function RTCSessionDescription(args) {
-        return args;
-      };
-    } // this adds an additional event listener to MediaStrackTrack that signals
-    // when a tracks enabled property was changed. Workaround for a bug in
-    // addStream, see below. No longer required in 15025+
-
-
-    if (browserDetails.version < 15025) {
-      var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled');
-      Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {
-        set: function (value) {
-          origMSTEnabled.set.call(this, value);
-          var ev = new Event('enabled');
-          ev.enabled = value;
-          this.dispatchEvent(ev);
-        }
-      });
-    }
-  } // ORTC defines the DTMF sender a bit different.
-  // https://github.com/w3c/ortc/issues/714
-
-
-  if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
-    Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
-      get: function () {
-        if (this._dtmf === undefined) {
-          if (this.track.kind === 'audio') {
-            this._dtmf = new window.RTCDtmfSender(this);
-          } else if (this.track.kind === 'video') {
-            this._dtmf = null;
-          }
-        }
-
-        return this._dtmf;
-      }
-    });
-  } // Edge currently only implements the RTCDtmfSender, not the
-  // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*
-
-
-  if (window.RTCDtmfSender && !window.RTCDTMFSender) {
-    window.RTCDTMFSender = window.RTCDtmfSender;
-  }
-
-  var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim.default)(window, browserDetails.version);
-
-  window.RTCPeerConnection = function RTCPeerConnection(config) {
-    if (config && config.iceServers) {
-      config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version);
-      utils.log('ICE servers after filtering:', config.iceServers);
-    }
-
-    return new RTCPeerConnectionShim(config);
-  };
-
-  window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;
-}
-
-function shimReplaceTrack(window) {
-  // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614
-  if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) {
-    window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack;
-  }
-}
-},{"../utils":"iSxC","./filtericeservers":"NZ1C","rtcpeerconnection-shim":"NJ2u","./getusermedia":"YdKx","./getdisplaymedia":"P3bV"}],"GzSv":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimGetUserMedia(window, browserDetails) {
-  var navigator = window && window.navigator;
-  var MediaStreamTrack = window && window.MediaStreamTrack;
-
-  navigator.getUserMedia = function (constraints, onSuccess, onError) {
-    // Replace Firefox 44+'s deprecation warning with unprefixed version.
-    utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');
-    navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
-  };
-
-  if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {
-    var remap = function (obj, a, b) {
-      if (a in obj && !(b in obj)) {
-        obj[b] = obj[a];
-        delete obj[a];
-      }
-    };
-
-    var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
-    navigator.mediaDevices.getUserMedia = function (c) {
-      if (_typeof(c) === 'object' && _typeof(c.audio) === 'object') {
-        c = JSON.parse(JSON.stringify(c));
-        remap(c.audio, 'autoGainControl', 'mozAutoGainControl');
-        remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');
-      }
-
-      return nativeGetUserMedia(c);
-    };
-
-    if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {
-      var nativeGetSettings = MediaStreamTrack.prototype.getSettings;
-
-      MediaStreamTrack.prototype.getSettings = function () {
-        var obj = nativeGetSettings.apply(this, arguments);
-        remap(obj, 'mozAutoGainControl', 'autoGainControl');
-        remap(obj, 'mozNoiseSuppression', 'noiseSuppression');
-        return obj;
-      };
-    }
-
-    if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {
-      var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
-
-      MediaStreamTrack.prototype.applyConstraints = function (c) {
-        if (this.kind === 'audio' && _typeof(c) === 'object') {
-          c = JSON.parse(JSON.stringify(c));
-          remap(c, 'autoGainControl', 'mozAutoGainControl');
-          remap(c, 'noiseSuppression', 'mozNoiseSuppression');
-        }
-
-        return nativeApplyConstraints.apply(this, [c]);
-      };
-    }
-  }
-}
-},{"../utils":"iSxC"}],"UuGU":[function(require,module,exports) {
-/*
- *  Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window, preferredMediaSource) {
-  if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
-    return;
-  }
-
-  if (!window.navigator.mediaDevices) {
-    return;
-  }
-
-  window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
-    if (!(constraints && constraints.video)) {
-      var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');
-      err.name = 'NotFoundError'; // from https://heycam.github.io/webidl/#idl-DOMException-error-names
-
-      err.code = 8;
-      return Promise.reject(err);
-    }
-
-    if (constraints.video === true) {
-      constraints.video = {
-        mediaSource: preferredMediaSource
-      };
-    } else {
-      constraints.video.mediaSource = preferredMediaSource;
-    }
-
-    return window.navigator.mediaDevices.getUserMedia(constraints);
-  };
-}
-},{}],"Fzdr":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimOnTrack = shimOnTrack;
-exports.shimPeerConnection = shimPeerConnection;
-exports.shimSenderGetStats = shimSenderGetStats;
-exports.shimReceiverGetStats = shimReceiverGetStats;
-exports.shimRemoveStream = shimRemoveStream;
-exports.shimRTCDataChannel = shimRTCDataChannel;
-exports.shimAddTransceiver = shimAddTransceiver;
-exports.shimGetParameters = shimGetParameters;
-exports.shimCreateOffer = shimCreateOffer;
-exports.shimCreateAnswer = shimCreateAnswer;
-Object.defineProperty(exports, "shimGetUserMedia", {
-  enumerable: true,
-  get: function () {
-    return _getusermedia.shimGetUserMedia;
-  }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
-  enumerable: true,
-  get: function () {
-    return _getdisplaymedia.shimGetDisplayMedia;
-  }
-});
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimOnTrack(window) {
-  if (_typeof(window) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
-    Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
-      get: function () {
-        return {
-          receiver: this.receiver
-        };
-      }
-    });
-  }
-}
-
-function shimPeerConnection(window, browserDetails) {
-  if (_typeof(window) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {
-    return; // probably media.peerconnection.enabled=false in about:config
-  }
-
-  if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {
-    // very basic support for old versions.
-    window.RTCPeerConnection = window.mozRTCPeerConnection;
-  }
-
-  if (browserDetails.version < 53) {
-    // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.
-    ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
-      var nativeMethod = window.RTCPeerConnection.prototype[method];
-
-      var methodObj = _defineProperty({}, method, function () {
-        arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
-        return nativeMethod.apply(this, arguments);
-      });
-
-      window.RTCPeerConnection.prototype[method] = methodObj[method];
-    });
-  }
-
-  var modernStatsTypes = {
-    inboundrtp: 'inbound-rtp',
-    outboundrtp: 'outbound-rtp',
-    candidatepair: 'candidate-pair',
-    localcandidate: 'local-candidate',
-    remotecandidate: 'remote-candidate'
-  };
-  var nativeGetStats = window.RTCPeerConnection.prototype.getStats;
-
-  window.RTCPeerConnection.prototype.getStats = function getStats() {
-    var [selector, onSucc, onErr] = arguments;
-    return nativeGetStats.apply(this, [selector || null]).then(function (stats) {
-      if (browserDetails.version < 53 && !onSucc) {
-        // Shim only promise getStats with spec-hyphens in type names
-        // Leave callback version alone; misc old uses of forEach before Map
-        try {
-          stats.forEach(function (stat) {
-            stat.type = modernStatsTypes[stat.type] || stat.type;
-          });
-        } catch (e) {
-          if (e.name !== 'TypeError') {
-            throw e;
-          } // Avoid TypeError: "type" is read-only, in old versions. 34-43ish
-
-
-          stats.forEach(function (stat, i) {
-            stats.set(i, Object.assign({}, stat, {
-              type: modernStatsTypes[stat.type] || stat.type
-            }));
-          });
-        }
-      }
-
-      return stats;
-    }).then(onSucc, onErr);
-  };
-}
-
-function shimSenderGetStats(window) {
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
-    return;
-  }
-
-  if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {
-    return;
-  }
-
-  var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
-  if (origGetSenders) {
-    window.RTCPeerConnection.prototype.getSenders = function getSenders() {
-      var _this = this;
-
-      var senders = origGetSenders.apply(this, []);
-      senders.forEach(function (sender) {
-        return sender._pc = _this;
-      });
-      return senders;
-    };
-  }
-
-  var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
-  if (origAddTrack) {
-    window.RTCPeerConnection.prototype.addTrack = function addTrack() {
-      var sender = origAddTrack.apply(this, arguments);
-      sender._pc = this;
-      return sender;
-    };
-  }
-
-  window.RTCRtpSender.prototype.getStats = function getStats() {
-    return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());
-  };
-}
-
-function shimReceiverGetStats(window) {
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
-    return;
-  }
-
-  if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {
-    return;
-  }
-
-  var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
-
-  if (origGetReceivers) {
-    window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
-      var _this2 = this;
-
-      var receivers = origGetReceivers.apply(this, []);
-      receivers.forEach(function (receiver) {
-        return receiver._pc = _this2;
-      });
-      return receivers;
-    };
-  }
-
-  utils.wrapPeerConnectionEvent(window, 'track', function (e) {
-    e.receiver._pc = e.srcElement;
-    return e;
-  });
-
-  window.RTCRtpReceiver.prototype.getStats = function getStats() {
-    return this._pc.getStats(this.track);
-  };
-}
-
-function shimRemoveStream(window) {
-  if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {
-    return;
-  }
-
-  window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
-    var _this3 = this;
-
-    utils.deprecated('removeStream', 'removeTrack');
-    this.getSenders().forEach(function (sender) {
-      if (sender.track && stream.getTracks().includes(sender.track)) {
-        _this3.removeTrack(sender);
-      }
-    });
-  };
-}
-
-function shimRTCDataChannel(window) {
-  // rename DataChannel to RTCDataChannel (native fix in FF60):
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851
-  if (window.DataChannel && !window.RTCDataChannel) {
-    window.RTCDataChannel = window.DataChannel;
-  }
-}
-
-function shimAddTransceiver(window) {
-  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
-  // Firefox ignores the init sendEncodings options passed to addTransceiver
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
-    return;
-  }
-
-  var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;
-
-  if (origAddTransceiver) {
-    window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {
-      this.setParametersPromises = [];
-      var initParameters = arguments[1];
-      var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;
-
-      if (shouldPerformCheck) {
-        // If sendEncodings params are provided, validate grammar
-        initParameters.sendEncodings.forEach(function (encodingParam) {
-          if ('rid' in encodingParam) {
-            var ridRegex = /^[a-z0-9]{0,16}$/i;
-
-            if (!ridRegex.test(encodingParam.rid)) {
-              throw new TypeError('Invalid RID value provided.');
-            }
-          }
-
-          if ('scaleResolutionDownBy' in encodingParam) {
-            if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {
-              throw new RangeError('scale_resolution_down_by must be >= 1.0');
-            }
-          }
-
-          if ('maxFramerate' in encodingParam) {
-            if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {
-              throw new RangeError('max_framerate must be >= 0.0');
-            }
-          }
-        });
-      }
-
-      var transceiver = origAddTransceiver.apply(this, arguments);
-
-      if (shouldPerformCheck) {
-        // Check if the init options were applied. If not we do this in an
-        // asynchronous way and save the promise reference in a global object.
-        // This is an ugly hack, but at the same time is way more robust than
-        // checking the sender parameters before and after the createOffer
-        // Also note that after the createoffer we are not 100% sure that
-        // the params were asynchronously applied so we might miss the
-        // opportunity to recreate offer.
-        var {
-          sender: sender
-        } = transceiver;
-        var params = sender.getParameters();
-
-        if (!('encodings' in params) || // Avoid being fooled by patched getParameters() below.
-        params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) {
-          params.encodings = initParameters.sendEncodings;
-          sender.sendEncodings = initParameters.sendEncodings;
-          this.setParametersPromises.push(sender.setParameters(params).then(function () {
-            delete sender.sendEncodings;
-          }).catch(function () {
-            delete sender.sendEncodings;
-          }));
-        }
-      }
-
-      return transceiver;
-    };
-  }
-}
-
-function shimGetParameters(window) {
-  if (!(_typeof(window) === 'object' && window.RTCRtpSender)) {
-    return;
-  }
-
-  var origGetParameters = window.RTCRtpSender.prototype.getParameters;
-
-  if (origGetParameters) {
-    window.RTCRtpSender.prototype.getParameters = function getParameters() {
-      var params = origGetParameters.apply(this, arguments);
-
-      if (!('encodings' in params)) {
-        params.encodings = [].concat(this.sendEncodings || [{}]);
-      }
-
-      return params;
-    };
-  }
-}
-
-function shimCreateOffer(window) {
-  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
-  // Firefox ignores the init sendEncodings options passed to addTransceiver
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
-    return;
-  }
-
-  var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
-
-  window.RTCPeerConnection.prototype.createOffer = function createOffer() {
-    var _arguments = arguments,
-        _this4 = this;
-
-    if (this.setParametersPromises && this.setParametersPromises.length) {
-      return Promise.all(this.setParametersPromises).then(function () {
-        return origCreateOffer.apply(_this4, _arguments);
-      }).finally(function () {
-        _this4.setParametersPromises = [];
-      });
-    }
-
-    return origCreateOffer.apply(this, arguments);
-  };
-}
-
-function shimCreateAnswer(window) {
-  // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
-  // Firefox ignores the init sendEncodings options passed to addTransceiver
-  // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
-  if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
-    return;
-  }
-
-  var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;
-
-  window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {
-    var _arguments2 = arguments,
-        _this5 = this;
-
-    if (this.setParametersPromises && this.setParametersPromises.length) {
-      return Promise.all(this.setParametersPromises).then(function () {
-        return origCreateAnswer.apply(_this5, _arguments2);
-      }).finally(function () {
-        _this5.setParametersPromises = [];
-      });
-    }
-
-    return origCreateAnswer.apply(this, arguments);
-  };
-}
-},{"../utils":"iSxC","./getusermedia":"GzSv","./getdisplaymedia":"UuGU"}],"t1lL":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimLocalStreamsAPI = shimLocalStreamsAPI;
-exports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;
-exports.shimCallbacksAPI = shimCallbacksAPI;
-exports.shimGetUserMedia = shimGetUserMedia;
-exports.shimConstraints = shimConstraints;
-exports.shimRTCIceServerUrls = shimRTCIceServerUrls;
-exports.shimTrackEventTransceiver = shimTrackEventTransceiver;
-exports.shimCreateOfferLegacy = shimCreateOfferLegacy;
-exports.shimAudioContext = shimAudioContext;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimLocalStreamsAPI(window) {
-  if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
-    return;
-  }
-
-  if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {
-    window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
-      if (!this._localStreams) {
-        this._localStreams = [];
-      }
-
-      return this._localStreams;
-    };
-  }
-
-  if (!('addStream' in window.RTCPeerConnection.prototype)) {
-    var _addTrack = window.RTCPeerConnection.prototype.addTrack;
-
-    window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
-      var _this = this;
-
-      if (!this._localStreams) {
-        this._localStreams = [];
-      }
-
-      if (!this._localStreams.includes(stream)) {
-        this._localStreams.push(stream);
-      } // Try to emulate Chrome's behaviour of adding in audio-video order.
-      // Safari orders by track id.
-
-
-      stream.getAudioTracks().forEach(function (track) {
-        return _addTrack.call(_this, track, stream);
-      });
-      stream.getVideoTracks().forEach(function (track) {
-        return _addTrack.call(_this, track, stream);
-      });
-    };
-
-    window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {
-      var _this2 = this;
-
-      for (var _len = arguments.length, streams = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
-        streams[_key - 1] = arguments[_key];
-      }
-
-      if (streams) {
-        streams.forEach(function (stream) {
-          if (!_this2._localStreams) {
-            _this2._localStreams = [stream];
-          } else if (!_this2._localStreams.includes(stream)) {
-            _this2._localStreams.push(stream);
-          }
-        });
-      }
-
-      return _addTrack.apply(this, arguments);
-    };
-  }
-
-  if (!('removeStream' in window.RTCPeerConnection.prototype)) {
-    window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
-      var _this3 = this;
-
-      if (!this._localStreams) {
-        this._localStreams = [];
-      }
-
-      var index = this._localStreams.indexOf(stream);
-
-      if (index === -1) {
-        return;
-      }
-
-      this._localStreams.splice(index, 1);
-
-      var tracks = stream.getTracks();
-      this.getSenders().forEach(function (sender) {
-        if (tracks.includes(sender.track)) {
-          _this3.removeTrack(sender);
-        }
-      });
-    };
-  }
-}
-
-function shimRemoteStreamsAPI(window) {
-  if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
-    return;
-  }
-
-  if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {
-    window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {
-      return this._remoteStreams ? this._remoteStreams : [];
-    };
-  }
-
-  if (!('onaddstream' in window.RTCPeerConnection.prototype)) {
-    Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {
-      get: function () {
-        return this._onaddstream;
-      },
-      set: function (f) {
-        var _this4 = this;
-
-        if (this._onaddstream) {
-          this.removeEventListener('addstream', this._onaddstream);
-          this.removeEventListener('track', this._onaddstreampoly);
-        }
-
-        this.addEventListener('addstream', this._onaddstream = f);
-        this.addEventListener('track', this._onaddstreampoly = function (e) {
-          e.streams.forEach(function (stream) {
-            if (!_this4._remoteStreams) {
-              _this4._remoteStreams = [];
-            }
-
-            if (_this4._remoteStreams.includes(stream)) {
-              return;
-            }
-
-            _this4._remoteStreams.push(stream);
-
-            var event = new Event('addstream');
-            event.stream = stream;
-
-            _this4.dispatchEvent(event);
-          });
-        });
-      }
-    });
-    var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
-    window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
-      var pc = this;
-
-      if (!this._onaddstreampoly) {
-        this.addEventListener('track', this._onaddstreampoly = function (e) {
-          e.streams.forEach(function (stream) {
-            if (!pc._remoteStreams) {
-              pc._remoteStreams = [];
-            }
-
-            if (pc._remoteStreams.indexOf(stream) >= 0) {
-              return;
-            }
-
-            pc._remoteStreams.push(stream);
-
-            var event = new Event('addstream');
-            event.stream = stream;
-            pc.dispatchEvent(event);
-          });
-        });
-      }
-
-      return origSetRemoteDescription.apply(pc, arguments);
-    };
-  }
-}
-
-function shimCallbacksAPI(window) {
-  if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
-    return;
-  }
-
-  var prototype = window.RTCPeerConnection.prototype;
-  var origCreateOffer = prototype.createOffer;
-  var origCreateAnswer = prototype.createAnswer;
-  var setLocalDescription = prototype.setLocalDescription;
-  var setRemoteDescription = prototype.setRemoteDescription;
-  var addIceCandidate = prototype.addIceCandidate;
-
-  prototype.createOffer = function createOffer(successCallback, failureCallback) {
-    var options = arguments.length >= 2 ? arguments[2] : arguments[0];
-    var promise = origCreateOffer.apply(this, [options]);
-
-    if (!failureCallback) {
-      return promise;
-    }
-
-    promise.then(successCallback, failureCallback);
-    return Promise.resolve();
-  };
-
-  prototype.createAnswer = function createAnswer(successCallback, failureCallback) {
-    var options = arguments.length >= 2 ? arguments[2] : arguments[0];
-    var promise = origCreateAnswer.apply(this, [options]);
-
-    if (!failureCallback) {
-      return promise;
-    }
-
-    promise.then(successCallback, failureCallback);
-    return Promise.resolve();
-  };
-
-  var withCallback = function (description, successCallback, failureCallback) {
-    var promise = setLocalDescription.apply(this, [description]);
-
-    if (!failureCallback) {
-      return promise;
-    }
-
-    promise.then(successCallback, failureCallback);
-    return Promise.resolve();
-  };
-
-  prototype.setLocalDescription = withCallback;
-
-  withCallback = function (description, successCallback, failureCallback) {
-    var promise = setRemoteDescription.apply(this, [description]);
-
-    if (!failureCallback) {
-      return promise;
-    }
-
-    promise.then(successCallback, failureCallback);
-    return Promise.resolve();
-  };
-
-  prototype.setRemoteDescription = withCallback;
-
-  withCallback = function (candidate, successCallback, failureCallback) {
-    var promise = addIceCandidate.apply(this, [candidate]);
-
-    if (!failureCallback) {
-      return promise;
-    }
-
-    promise.then(successCallback, failureCallback);
-    return Promise.resolve();
-  };
-
-  prototype.addIceCandidate = withCallback;
-}
-
-function shimGetUserMedia(window) {
-  var navigator = window && window.navigator;
-
-  if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
-    // shim not needed in Safari 12.1
-    var mediaDevices = navigator.mediaDevices;
-
-    var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);
-
-    navigator.mediaDevices.getUserMedia = function (constraints) {
-      return _getUserMedia(shimConstraints(constraints));
-    };
-  }
-
-  if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
-    navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {
-      navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);
-    }.bind(navigator);
-  }
-}
-
-function shimConstraints(constraints) {
-  if (constraints && constraints.video !== undefined) {
-    return Object.assign({}, constraints, {
-      video: utils.compactObject(constraints.video)
-    });
-  }
-
-  return constraints;
-}
-
-function shimRTCIceServerUrls(window) {
-  if (!window.RTCPeerConnection) {
-    return;
-  } // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
-
-
-  var OrigPeerConnection = window.RTCPeerConnection;
-
-  window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {
-    if (pcConfig && pcConfig.iceServers) {
-      var newIceServers = [];
-
-      for (var i = 0; i < pcConfig.iceServers.length; i++) {
-        var server = pcConfig.iceServers[i];
-
-        if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {
-          utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
-          server = JSON.parse(JSON.stringify(server));
-          server.urls = server.url;
-          delete server.url;
-          newIceServers.push(server);
-        } else {
-          newIceServers.push(pcConfig.iceServers[i]);
-        }
-      }
-
-      pcConfig.iceServers = newIceServers;
-    }
-
-    return new OrigPeerConnection(pcConfig, pcConstraints);
-  };
-
-  window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; // wrap static methods. Currently just generateCertificate.
-
-  if ('generateCertificate' in OrigPeerConnection) {
-    Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
-      get: function () {
-        return OrigPeerConnection.generateCertificate;
-      }
-    });
-  }
-}
-
-function shimTrackEventTransceiver(window) {
-  // Add event.transceiver member over deprecated event.receiver
-  if (_typeof(window) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
-    Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
-      get: function () {
-        return {
-          receiver: this.receiver
-        };
-      }
-    });
-  }
-}
-
-function shimCreateOfferLegacy(window) {
-  var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
-
-  window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {
-    if (offerOptions) {
-      if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
-        // support bit values
-        offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;
-      }
-
-      var audioTransceiver = this.getTransceivers().find(function (transceiver) {
-        return transceiver.receiver.track.kind === 'audio';
-      });
-
-      if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {
-        if (audioTransceiver.direction === 'sendrecv') {
-          if (audioTransceiver.setDirection) {
-            audioTransceiver.setDirection('sendonly');
-          } else {
-            audioTransceiver.direction = 'sendonly';
-          }
-        } else if (audioTransceiver.direction === 'recvonly') {
-          if (audioTransceiver.setDirection) {
-            audioTransceiver.setDirection('inactive');
-          } else {
-            audioTransceiver.direction = 'inactive';
-          }
-        }
-      } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {
-        this.addTransceiver('audio');
-      }
-
-      if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {
-        // support bit values
-        offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;
-      }
-
-      var videoTransceiver = this.getTransceivers().find(function (transceiver) {
-        return transceiver.receiver.track.kind === 'video';
-      });
-
-      if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {
-        if (videoTransceiver.direction === 'sendrecv') {
-          if (videoTransceiver.setDirection) {
-            videoTransceiver.setDirection('sendonly');
-          } else {
-            videoTransceiver.direction = 'sendonly';
-          }
-        } else if (videoTransceiver.direction === 'recvonly') {
-          if (videoTransceiver.setDirection) {
-            videoTransceiver.setDirection('inactive');
-          } else {
-            videoTransceiver.direction = 'inactive';
-          }
-        }
-      } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {
-        this.addTransceiver('video');
-      }
-    }
-
-    return origCreateOffer.apply(this, arguments);
-  };
-}
-
-function shimAudioContext(window) {
-  if (_typeof(window) !== 'object' || window.AudioContext) {
-    return;
-  }
-
-  window.AudioContext = window.webkitAudioContext;
-}
-},{"../utils":"iSxC"}],"GOQK":[function(require,module,exports) {
-/*
- *  Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.shimRTCIceCandidate = shimRTCIceCandidate;
-exports.shimMaxMessageSize = shimMaxMessageSize;
-exports.shimSendThrowTypeError = shimSendThrowTypeError;
-exports.shimConnectionState = shimConnectionState;
-exports.removeExtmapAllowMixed = removeExtmapAllowMixed;
-exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty;
-
-var _sdp = _interopRequireDefault(require("sdp"));
-
-var utils = _interopRequireWildcard(require("./utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimRTCIceCandidate(window) {
-  // foundation is arbitrarily chosen as an indicator for full support for
-  // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface
-  if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {
-    return;
-  }
-
-  var NativeRTCIceCandidate = window.RTCIceCandidate;
-
-  window.RTCIceCandidate = function RTCIceCandidate(args) {
-    // Remove the a= which shouldn't be part of the candidate string.
-    if (_typeof(args) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {
-      args = JSON.parse(JSON.stringify(args));
-      args.candidate = args.candidate.substr(2);
-    }
-
-    if (args.candidate && args.candidate.length) {
-      // Augment the native candidate with the parsed fields.
-      var nativeCandidate = new NativeRTCIceCandidate(args);
-
-      var parsedCandidate = _sdp.default.parseCandidate(args.candidate);
-
-      var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate); // Add a serializer that does not serialize the extra attributes.
-
-      augmentedCandidate.toJSON = function toJSON() {
-        return {
-          candidate: augmentedCandidate.candidate,
-          sdpMid: augmentedCandidate.sdpMid,
-          sdpMLineIndex: augmentedCandidate.sdpMLineIndex,
-          usernameFragment: augmentedCandidate.usernameFragment
-        };
-      };
-
-      return augmentedCandidate;
-    }
-
-    return new NativeRTCIceCandidate(args);
-  };
-
-  window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype; // Hook up the augmented candidate in onicecandidate and
-  // addEventListener('icecandidate', ...)
-
-  utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {
-    if (e.candidate) {
-      Object.defineProperty(e, 'candidate', {
-        value: new window.RTCIceCandidate(e.candidate),
-        writable: 'false'
-      });
-    }
-
-    return e;
-  });
-}
-
-function shimMaxMessageSize(window, browserDetails) {
-  if (!window.RTCPeerConnection) {
-    return;
-  }
-
-  if (!('sctp' in window.RTCPeerConnection.prototype)) {
-    Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {
-      get: function () {
-        return typeof this._sctp === 'undefined' ? null : this._sctp;
-      }
-    });
-  }
-
-  var sctpInDescription = function (description) {
-    if (!description || !description.sdp) {
-      return false;
-    }
-
-    var sections = _sdp.default.splitSections(description.sdp);
-
-    sections.shift();
-    return sections.some(function (mediaSection) {
-      var mLine = _sdp.default.parseMLine(mediaSection);
-
-      return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;
-    });
-  };
-
-  var getRemoteFirefoxVersion = function (description) {
-    // TODO: Is there a better solution for detecting Firefox?
-    var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);
-
-    if (match === null || match.length < 2) {
-      return -1;
-    }
-
-    var version = parseInt(match[1], 10); // Test for NaN (yes, this is ugly)
-
-    return version !== version ? -1 : version;
-  };
-
-  var getCanSendMaxMessageSize = function (remoteIsFirefox) {
-    // Every implementation we know can send at least 64 KiB.
-    // Note: Although Chrome is technically able to send up to 256 KiB, the
-    //       data does not reach the other peer reliably.
-    //       See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419
-    var canSendMaxMessageSize = 65536;
-
-    if (browserDetails.browser === 'firefox') {
-      if (browserDetails.version < 57) {
-        if (remoteIsFirefox === -1) {
-          // FF < 57 will send in 16 KiB chunks using the deprecated PPID
-          // fragmentation.
-          canSendMaxMessageSize = 16384;
-        } else {
-          // However, other FF (and RAWRTC) can reassemble PPID-fragmented
-          // messages. Thus, supporting ~2 GiB when sending.
-          canSendMaxMessageSize = 2147483637;
-        }
-      } else if (browserDetails.version < 60) {
-        // Currently, all FF >= 57 will reset the remote maximum message size
-        // to the default value when a data channel is created at a later
-        // stage. :(
-        // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
-        canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;
-      } else {
-        // FF >= 60 supports sending ~2 GiB
-        canSendMaxMessageSize = 2147483637;
-      }
-    }
-
-    return canSendMaxMessageSize;
-  };
-
-  var getMaxMessageSize = function (description, remoteIsFirefox) {
-    // Note: 65536 bytes is the default value from the SDP spec. Also,
-    //       every implementation we know supports receiving 65536 bytes.
-    var maxMessageSize = 65536; // FF 57 has a slightly incorrect default remote max message size, so
-    // we need to adjust it here to avoid a failure when sending.
-    // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697
-
-    if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {
-      maxMessageSize = 65535;
-    }
-
-    var match = _sdp.default.matchPrefix(description.sdp, 'a=max-message-size:');
-
-    if (match.length > 0) {
-      maxMessageSize = parseInt(match[0].substr(19), 10);
-    } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {
-      // If the maximum message size is not present in the remote SDP and
-      // both local and remote are Firefox, the remote peer can receive
-      // ~2 GiB.
-      maxMessageSize = 2147483637;
-    }
-
-    return maxMessageSize;
-  };
-
-  var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
-  window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
-    this._sctp = null; // Chrome decided to not expose .sctp in plan-b mode.
-    // As usual, adapter.js has to do an 'ugly worakaround'
-    // to cover up the mess.
-
-    if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {
-      var {
-        sdpSemantics: sdpSemantics
-      } = this.getConfiguration();
-
-      if (sdpSemantics === 'plan-b') {
-        Object.defineProperty(this, 'sctp', {
-          get: function () {
-            return typeof this._sctp === 'undefined' ? null : this._sctp;
-          },
-          enumerable: true,
-          configurable: true
-        });
-      }
-    }
-
-    if (sctpInDescription(arguments[0])) {
-      // Check if the remote is FF.
-      var isFirefox = getRemoteFirefoxVersion(arguments[0]); // Get the maximum message size the local peer is capable of sending
-
-      var canSendMMS = getCanSendMaxMessageSize(isFirefox); // Get the maximum message size of the remote peer.
-
-      var remoteMMS = getMaxMessageSize(arguments[0], isFirefox); // Determine final maximum message size
-
-      var maxMessageSize;
-
-      if (canSendMMS === 0 && remoteMMS === 0) {
-        maxMessageSize = Number.POSITIVE_INFINITY;
-      } else if (canSendMMS === 0 || remoteMMS === 0) {
-        maxMessageSize = Math.max(canSendMMS, remoteMMS);
-      } else {
-        maxMessageSize = Math.min(canSendMMS, remoteMMS);
-      } // Create a dummy RTCSctpTransport object and the 'maxMessageSize'
-      // attribute.
-
-
-      var sctp = {};
-      Object.defineProperty(sctp, 'maxMessageSize', {
-        get: function () {
-          return maxMessageSize;
-        }
-      });
-      this._sctp = sctp;
-    }
-
-    return origSetRemoteDescription.apply(this, arguments);
-  };
-}
-
-function shimSendThrowTypeError(window) {
-  if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {
-    return;
-  } // Note: Although Firefox >= 57 has a native implementation, the maximum
-  //       message size can be reset for all data channels at a later stage.
-  //       See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
-
-
-  function wrapDcSend(dc, pc) {
-    var origDataChannelSend = dc.send;
-
-    dc.send = function send() {
-      var data = arguments[0];
-      var length = data.length || data.size || data.byteLength;
-
-      if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {
-        throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');
-      }
-
-      return origDataChannelSend.apply(dc, arguments);
-    };
-  }
-
-  var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;
-
-  window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {
-    var dataChannel = origCreateDataChannel.apply(this, arguments);
-    wrapDcSend(dataChannel, this);
-    return dataChannel;
-  };
-
-  utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {
-    wrapDcSend(e.channel, e.target);
-    return e;
-  });
-}
-/* shims RTCConnectionState by pretending it is the same as iceConnectionState.
- * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12
- * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect
- * since DTLS failures would be hidden. See
- * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827
- * for the Firefox tracking bug.
- */
-
-
-function shimConnectionState(window) {
-  if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {
-    return;
-  }
-
-  var proto = window.RTCPeerConnection.prototype;
-  Object.defineProperty(proto, 'connectionState', {
-    get: function () {
-      return {
-        completed: 'connected',
-        checking: 'connecting'
-      }[this.iceConnectionState] || this.iceConnectionState;
-    },
-    enumerable: true,
-    configurable: true
-  });
-  Object.defineProperty(proto, 'onconnectionstatechange', {
-    get: function () {
-      return this._onconnectionstatechange || null;
-    },
-    set: function (cb) {
-      if (this._onconnectionstatechange) {
-        this.removeEventListener('connectionstatechange', this._onconnectionstatechange);
-        delete this._onconnectionstatechange;
-      }
-
-      if (cb) {
-        this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);
-      }
-    },
-    enumerable: true,
-    configurable: true
-  });
-  ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {
-    var origMethod = proto[method];
-
-    proto[method] = function () {
-      if (!this._connectionstatechangepoly) {
-        this._connectionstatechangepoly = function (e) {
-          var pc = e.target;
-
-          if (pc._lastConnectionState !== pc.connectionState) {
-            pc._lastConnectionState = pc.connectionState;
-            var newEvent = new Event('connectionstatechange', e);
-            pc.dispatchEvent(newEvent);
-          }
-
-          return e;
-        };
-
-        this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);
-      }
-
-      return origMethod.apply(this, arguments);
-    };
-  });
-}
-
-function removeExtmapAllowMixed(window, browserDetails) {
-  /* remove a=extmap-allow-mixed for webrtc.org < M71 */
-  if (!window.RTCPeerConnection) {
-    return;
-  }
-
-  if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {
-    return;
-  }
-
-  if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {
-    return;
-  }
-
-  var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;
-
-  window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {
-    if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) {
-      var sdp = desc.sdp.split('\n').filter(function (line) {
-        return line.trim() !== 'a=extmap-allow-mixed';
-      }).join('\n'); // Safari enforces read-only-ness of RTCSessionDescription fields.
-
-      if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) {
-        arguments[0] = new window.RTCSessionDescription({
-          type: desc.type,
-          sdp: sdp
-        });
-      } else {
-        desc.sdp = sdp;
-      }
-    }
-
-    return nativeSRD.apply(this, arguments);
-  };
-}
-
-function shimAddIceCandidateNullOrEmpty(window, browserDetails) {
-  // Support for addIceCandidate(null or undefined)
-  // as well as addIceCandidate({candidate: "", ...})
-  // https://bugs.chromium.org/p/chromium/issues/detail?id=978582
-  // Note: must be called before other polyfills which change the signature.
-  if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {
-    return;
-  }
-
-  var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;
-
-  if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {
-    return;
-  }
-
-  window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {
-    if (!arguments[0]) {
-      if (arguments[1]) {
-        arguments[1].apply(null);
-      }
-
-      return Promise.resolve();
-    } // Firefox 68+ emits and processes {candidate: "", ...}, ignore
-    // in older versions.
-    // Native support for ignoring exists for Chrome M77+.
-    // Safari ignores as well, exact version unknown but works in the same
-    // version that also ignores addIceCandidate(null).
-
-
-    if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') {
-      return Promise.resolve();
-    }
-
-    return nativeAddIceCandidate.apply(this, arguments);
-  };
-}
-},{"sdp":"YHvh","./utils":"iSxC"}],"KtlG":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.adapterFactory = adapterFactory;
-
-var utils = _interopRequireWildcard(require("./utils"));
-
-var chromeShim = _interopRequireWildcard(require("./chrome/chrome_shim"));
-
-var edgeShim = _interopRequireWildcard(require("./edge/edge_shim"));
-
-var firefoxShim = _interopRequireWildcard(require("./firefox/firefox_shim"));
-
-var safariShim = _interopRequireWildcard(require("./safari/safari_shim"));
-
-var commonShim = _interopRequireWildcard(require("./common_shim"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-// Browser shims.
-// Shimming starts here.
-function adapterFactory() {
-  var {
-    window: window
-  } = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
-  var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
-    shimChrome: true,
-    shimFirefox: true,
-    shimEdge: true,
-    shimSafari: true
-  };
-  // Utils.
-  var logging = utils.log;
-  var browserDetails = utils.detectBrowser(window);
-  var adapter = {
-    browserDetails: browserDetails,
-    commonShim: commonShim,
-    extractVersion: utils.extractVersion,
-    disableLog: utils.disableLog,
-    disableWarnings: utils.disableWarnings
-  }; // Shim browser if found.
-
-  switch (browserDetails.browser) {
-    case 'chrome':
-      if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {
-        logging('Chrome shim is not included in this adapter release.');
-        return adapter;
-      }
-
-      if (browserDetails.version === null) {
-        logging('Chrome shim can not determine version, not shimming.');
-        return adapter;
-      }
-
-      logging('adapter.js shimming chrome.'); // Export to the adapter global object visible in the browser.
-
-      adapter.browserShim = chromeShim; // Must be called before shimPeerConnection.
-
-      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
-      chromeShim.shimGetUserMedia(window, browserDetails);
-      chromeShim.shimMediaStream(window, browserDetails);
-      chromeShim.shimPeerConnection(window, browserDetails);
-      chromeShim.shimOnTrack(window, browserDetails);
-      chromeShim.shimAddTrackRemoveTrack(window, browserDetails);
-      chromeShim.shimGetSendersWithDtmf(window, browserDetails);
-      chromeShim.shimGetStats(window, browserDetails);
-      chromeShim.shimSenderReceiverGetStats(window, browserDetails);
-      chromeShim.fixNegotiationNeeded(window, browserDetails);
-      commonShim.shimRTCIceCandidate(window, browserDetails);
-      commonShim.shimConnectionState(window, browserDetails);
-      commonShim.shimMaxMessageSize(window, browserDetails);
-      commonShim.shimSendThrowTypeError(window, browserDetails);
-      commonShim.removeExtmapAllowMixed(window, browserDetails);
-      break;
-
-    case 'firefox':
-      if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {
-        logging('Firefox shim is not included in this adapter release.');
-        return adapter;
-      }
-
-      logging('adapter.js shimming firefox.'); // Export to the adapter global object visible in the browser.
-
-      adapter.browserShim = firefoxShim; // Must be called before shimPeerConnection.
-
-      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
-      firefoxShim.shimGetUserMedia(window, browserDetails);
-      firefoxShim.shimPeerConnection(window, browserDetails);
-      firefoxShim.shimOnTrack(window, browserDetails);
-      firefoxShim.shimRemoveStream(window, browserDetails);
-      firefoxShim.shimSenderGetStats(window, browserDetails);
-      firefoxShim.shimReceiverGetStats(window, browserDetails);
-      firefoxShim.shimRTCDataChannel(window, browserDetails);
-      firefoxShim.shimAddTransceiver(window, browserDetails);
-      firefoxShim.shimGetParameters(window, browserDetails);
-      firefoxShim.shimCreateOffer(window, browserDetails);
-      firefoxShim.shimCreateAnswer(window, browserDetails);
-      commonShim.shimRTCIceCandidate(window, browserDetails);
-      commonShim.shimConnectionState(window, browserDetails);
-      commonShim.shimMaxMessageSize(window, browserDetails);
-      commonShim.shimSendThrowTypeError(window, browserDetails);
-      break;
-
-    case 'edge':
-      if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
-        logging('MS edge shim is not included in this adapter release.');
-        return adapter;
-      }
-
-      logging('adapter.js shimming edge.'); // Export to the adapter global object visible in the browser.
-
-      adapter.browserShim = edgeShim;
-      edgeShim.shimGetUserMedia(window, browserDetails);
-      edgeShim.shimGetDisplayMedia(window, browserDetails);
-      edgeShim.shimPeerConnection(window, browserDetails);
-      edgeShim.shimReplaceTrack(window, browserDetails); // the edge shim implements the full RTCIceCandidate object.
-
-      commonShim.shimMaxMessageSize(window, browserDetails);
-      commonShim.shimSendThrowTypeError(window, browserDetails);
-      break;
-
-    case 'safari':
-      if (!safariShim || !options.shimSafari) {
-        logging('Safari shim is not included in this adapter release.');
-        return adapter;
-      }
-
-      logging('adapter.js shimming safari.'); // Export to the adapter global object visible in the browser.
-
-      adapter.browserShim = safariShim; // Must be called before shimCallbackAPI.
-
-      commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
-      safariShim.shimRTCIceServerUrls(window, browserDetails);
-      safariShim.shimCreateOfferLegacy(window, browserDetails);
-      safariShim.shimCallbacksAPI(window, browserDetails);
-      safariShim.shimLocalStreamsAPI(window, browserDetails);
-      safariShim.shimRemoteStreamsAPI(window, browserDetails);
-      safariShim.shimTrackEventTransceiver(window, browserDetails);
-      safariShim.shimGetUserMedia(window, browserDetails);
-      safariShim.shimAudioContext(window, browserDetails);
-      commonShim.shimRTCIceCandidate(window, browserDetails);
-      commonShim.shimMaxMessageSize(window, browserDetails);
-      commonShim.shimSendThrowTypeError(window, browserDetails);
-      commonShim.removeExtmapAllowMixed(window, browserDetails);
-      break;
-
-    default:
-      logging('Unsupported browser!');
-      break;
-  }
-
-  return adapter;
-}
-},{"./utils":"iSxC","./chrome/chrome_shim":"uI5X","./edge/edge_shim":"XRic","./firefox/firefox_shim":"Fzdr","./safari/safari_shim":"t1lL","./common_shim":"GOQK"}],"tI1X":[function(require,module,exports) {
-/*
- *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- *  Use of this source code is governed by a BSD-style license
- *  that can be found in the LICENSE file in the root of the source
- *  tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.default = void 0;
-
-var _adapter_factory = require("./adapter_factory.js");
-
-var adapter = (0, _adapter_factory.adapterFactory)({
-  window: typeof window === 'undefined' ? undefined : window
-});
-var _default = adapter;
-exports.default = _default;
-},{"./adapter_factory.js":"KtlG"}],"sXtV":[function(require,module,exports) {
-"use strict";
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.webRTCAdapter = void 0;
-
-var webrtc_adapter_1 = __importDefault(require("webrtc-adapter"));
-
-exports.webRTCAdapter = webrtc_adapter_1.default;
-},{"webrtc-adapter":"tI1X"}],"I31f":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.Supports = void 0;
-
-var adapter_1 = require("./adapter");
-
-exports.Supports = new (
-/** @class */
-function () {
-  function class_1() {
-    this.isIOS = ['iPad', 'iPhone', 'iPod'].includes(navigator.platform);
-    this.supportedBrowsers = ['firefox', 'chrome', 'safari'];
-    this.minFirefoxVersion = 59;
-    this.minChromeVersion = 72;
-    this.minSafariVersion = 605;
-  }
-
-  class_1.prototype.isWebRTCSupported = function () {
-    return typeof RTCPeerConnection !== 'undefined';
-  };
-
-  class_1.prototype.isBrowserSupported = function () {
-    var browser = this.getBrowser();
-    var version = this.getVersion();
-    var validBrowser = this.supportedBrowsers.includes(browser);
-    if (!validBrowser) return false;
-    if (browser === 'chrome') return version >= this.minChromeVersion;
-    if (browser === 'firefox') return version >= this.minFirefoxVersion;
-    if (browser === 'safari') return !this.isIOS && version >= this.minSafariVersion;
-    return false;
-  };
-
-  class_1.prototype.getBrowser = function () {
-    return adapter_1.webRTCAdapter.browserDetails.browser;
-  };
-
-  class_1.prototype.getVersion = function () {
-    return adapter_1.webRTCAdapter.browserDetails.version || 0;
-  };
-
-  class_1.prototype.isUnifiedPlanSupported = function () {
-    var browser = this.getBrowser();
-    var version = adapter_1.webRTCAdapter.browserDetails.version || 0;
-    if (browser === 'chrome' && version < 72) return false;
-    if (browser === 'firefox' && version >= 59) return true;
-    if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype)) return false;
-    var tempPc;
-    var supported = false;
-
-    try {
-      tempPc = new RTCPeerConnection();
-      tempPc.addTransceiver('audio');
-      supported = true;
-    } catch (e) {} finally {
-      if (tempPc) {
-        tempPc.close();
-      }
-    }
-
-    return supported;
-  };
-
-  class_1.prototype.toString = function () {
-    return "Supports: \n    browser:" + this.getBrowser() + " \n    version:" + this.getVersion() + " \n    isIOS:" + this.isIOS + " \n    isWebRTCSupported:" + this.isWebRTCSupported() + " \n    isBrowserSupported:" + this.isBrowserSupported() + " \n    isUnifiedPlanSupported:" + this.isUnifiedPlanSupported();
-  };
-
-  return class_1;
-}())();
-},{"./adapter":"sXtV"}],"BHXf":[function(require,module,exports) {
-"use strict";
-
-var __createBinding = this && this.__createBinding || (Object.create ? function (o, m, k, k2) {
-  if (k2 === undefined) k2 = k;
-  Object.defineProperty(o, k2, {
-    enumerable: true,
-    get: function get() {
-      return m[k];
-    }
-  });
-} : function (o, m, k, k2) {
-  if (k2 === undefined) k2 = k;
-  o[k2] = m[k];
-});
-
-var __setModuleDefault = this && this.__setModuleDefault || (Object.create ? function (o, v) {
-  Object.defineProperty(o, "default", {
-    enumerable: true,
-    value: v
-  });
-} : function (o, v) {
-  o["default"] = v;
-});
-
-var __importStar = this && this.__importStar || function (mod) {
-  if (mod && mod.__esModule) return mod;
-  var result = {};
-  if (mod != null) for (var k in mod) {
-    if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
-  }
-
-  __setModuleDefault(result, mod);
-
-  return result;
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.util = void 0;
-
-var BinaryPack = __importStar(require("peerjs-js-binarypack"));
-
-var supports_1 = require("./supports");
-
-var DEFAULT_CONFIG = {
-  iceServers: [{
-    urls: "stun:stun.l.google.com:19302"
-  }, {
-    urls: "turn:0.peerjs.com:3478",
-    username: "peerjs",
-    credential: "peerjsp"
-  }],
-  sdpSemantics: "unified-plan"
-};
-exports.util = new (
-/** @class */
-function () {
-  function class_1() {
-    this.CLOUD_HOST = "0.peerjs.com";
-    this.CLOUD_PORT = 443; // Browsers that need chunking:
-
-    this.chunkedBrowsers = {
-      Chrome: 1,
-      chrome: 1
-    };
-    this.chunkedMTU = 16300; // The original 60000 bytes setting does not work when sending data from Firefox to Chrome, which is "cut off" after 16384 bytes and delivered individually.
-    // Returns browser-agnostic default config
-
-    this.defaultConfig = DEFAULT_CONFIG;
-    this.browser = supports_1.Supports.getBrowser();
-    this.browserVersion = supports_1.Supports.getVersion(); // Lists which features are supported
-
-    this.supports = function () {
-      var supported = {
-        browser: supports_1.Supports.isBrowserSupported(),
-        webRTC: supports_1.Supports.isWebRTCSupported(),
-        audioVideo: false,
-        data: false,
-        binaryBlob: false,
-        reliable: false
-      };
-      if (!supported.webRTC) return supported;
-      var pc;
-
-      try {
-        pc = new RTCPeerConnection(DEFAULT_CONFIG);
-        supported.audioVideo = true;
-        var dc = void 0;
-
-        try {
-          dc = pc.createDataChannel("_PEERJSTEST", {
-            ordered: true
-          });
-          supported.data = true;
-          supported.reliable = !!dc.ordered; // Binary test
-
-          try {
-            dc.binaryType = "blob";
-            supported.binaryBlob = !supports_1.Supports.isIOS;
-          } catch (e) {}
-        } catch (e) {} finally {
-          if (dc) {
-            dc.close();
-          }
-        }
-      } catch (e) {} finally {
-        if (pc) {
-          pc.close();
-        }
-      }
-
-      return supported;
-    }();
-
-    this.pack = BinaryPack.pack;
-    this.unpack = BinaryPack.unpack; // Binary stuff
-
-    this._dataCount = 1;
-  }
-
-  class_1.prototype.noop = function () {}; // Ensure alphanumeric ids
-
-
-  class_1.prototype.validateId = function (id) {
-    // Allow empty ids
-    return !id || /^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(id);
-  };
-
-  class_1.prototype.chunk = function (blob) {
-    var chunks = [];
-    var size = blob.size;
-    var total = Math.ceil(size / exports.util.chunkedMTU);
-    var index = 0;
-    var start = 0;
-
-    while (start < size) {
-      var end = Math.min(size, start + exports.util.chunkedMTU);
-      var b = blob.slice(start, end);
-      var chunk = {
-        __peerData: this._dataCount,
-        n: index,
-        data: b,
-        total: total
-      };
-      chunks.push(chunk);
-      start = end;
-      index++;
-    }
-
-    this._dataCount++;
-    return chunks;
-  };
-
-  class_1.prototype.blobToArrayBuffer = function (blob, cb) {
-    var fr = new FileReader();
-
-    fr.onload = function (evt) {
-      if (evt.target) {
-        cb(evt.target.result);
-      }
-    };
-
-    fr.readAsArrayBuffer(blob);
-    return fr;
-  };
-
-  class_1.prototype.binaryStringToArrayBuffer = function (binary) {
-    var byteArray = new Uint8Array(binary.length);
-
-    for (var i = 0; i < binary.length; i++) {
-      byteArray[i] = binary.charCodeAt(i) & 0xff;
-    }
-
-    return byteArray.buffer;
-  };
-
-  class_1.prototype.randomToken = function () {
-    return Math.random().toString(36).substr(2);
-  };
-
-  class_1.prototype.isSecure = function () {
-    return location.protocol === "https:";
-  };
-
-  return class_1;
-}())();
-},{"peerjs-js-binarypack":"kdPp","./supports":"I31f"}],"JJlS":[function(require,module,exports) {
-'use strict';
-
-var has = Object.prototype.hasOwnProperty
-  , prefix = '~';
-
-/**
- * Constructor to create a storage for our `EE` objects.
- * An `Events` instance is a plain object whose properties are event names.
- *
- * @constructor
- * @private
- */
-function Events() {}
-
-//
-// We try to not inherit from `Object.prototype`. In some engines creating an
-// instance in this way is faster than calling `Object.create(null)` directly.
-// If `Object.create(null)` is not supported we prefix the event names with a
-// character to make sure that the built-in object properties are not
-// overridden or used as an attack vector.
-//
-if (Object.create) {
-  Events.prototype = Object.create(null);
-
-  //
-  // This hack is needed because the `__proto__` property is still inherited in
-  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
-  //
-  if (!new Events().__proto__) prefix = false;
-}
-
-/**
- * Representation of a single event listener.
- *
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
- * @constructor
- * @private
- */
-function EE(fn, context, once) {
-  this.fn = fn;
-  this.context = context;
-  this.once = once || false;
-}
-
-/**
- * Add a listener for a given event.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} once Specify if the listener is a one-time listener.
- * @returns {EventEmitter}
- * @private
- */
-function addListener(emitter, event, fn, context, once) {
-  if (typeof fn !== 'function') {
-    throw new TypeError('The listener must be a function');
-  }
-
-  var listener = new EE(fn, context || emitter, once)
-    , evt = prefix ? prefix + event : event;
-
-  if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;
-  else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);
-  else emitter._events[evt] = [emitter._events[evt], listener];
-
-  return emitter;
-}
-
-/**
- * Clear event by name.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} evt The Event name.
- * @private
- */
-function clearEvent(emitter, evt) {
-  if (--emitter._eventsCount === 0) emitter._events = new Events();
-  else delete emitter._events[evt];
-}
-
-/**
- * Minimal `EventEmitter` interface that is molded against the Node.js
- * `EventEmitter` interface.
- *
- * @constructor
- * @public
- */
-function EventEmitter() {
-  this._events = new Events();
-  this._eventsCount = 0;
-}
-
-/**
- * Return an array listing the events for which the emitter has registered
- * listeners.
- *
- * @returns {Array}
- * @public
- */
-EventEmitter.prototype.eventNames = function eventNames() {
-  var names = []
-    , events
-    , name;
-
-  if (this._eventsCount === 0) return names;
-
-  for (name in (events = this._events)) {
-    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
-  }
-
-  if (Object.getOwnPropertySymbols) {
-    return names.concat(Object.getOwnPropertySymbols(events));
-  }
-
-  return names;
-};
-
-/**
- * Return the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Array} The registered listeners.
- * @public
- */
-EventEmitter.prototype.listeners = function listeners(event) {
-  var evt = prefix ? prefix + event : event
-    , handlers = this._events[evt];
-
-  if (!handlers) return [];
-  if (handlers.fn) return [handlers.fn];
-
-  for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
-    ee[i] = handlers[i].fn;
-  }
-
-  return ee;
-};
-
-/**
- * Return the number of listeners listening to a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Number} The number of listeners.
- * @public
- */
-EventEmitter.prototype.listenerCount = function listenerCount(event) {
-  var evt = prefix ? prefix + event : event
-    , listeners = this._events[evt];
-
-  if (!listeners) return 0;
-  if (listeners.fn) return 1;
-  return listeners.length;
-};
-
-/**
- * Calls each of the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Boolean} `true` if the event had listeners, else `false`.
- * @public
- */
-EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
-  var evt = prefix ? prefix + event : event;
-
-  if (!this._events[evt]) return false;
-
-  var listeners = this._events[evt]
-    , len = arguments.length
-    , args
-    , i;
-
-  if (listeners.fn) {
-    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);
-
-    switch (len) {
-      case 1: return listeners.fn.call(listeners.context), true;
-      case 2: return listeners.fn.call(listeners.context, a1), true;
-      case 3: return listeners.fn.call(listeners.context, a1, a2), true;
-      case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
-      case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
-      case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
-    }
-
-    for (i = 1, args = new Array(len -1); i < len; i++) {
-      args[i - 1] = arguments[i];
-    }
-
-    listeners.fn.apply(listeners.context, args);
-  } else {
-    var length = listeners.length
-      , j;
-
-    for (i = 0; i < length; i++) {
-      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);
-
-      switch (len) {
-        case 1: listeners[i].fn.call(listeners[i].context); break;
-        case 2: listeners[i].fn.call(listeners[i].context, a1); break;
-        case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
-        case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
-        default:
-          if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
-            args[j - 1] = arguments[j];
-          }
-
-          listeners[i].fn.apply(listeners[i].context, args);
-      }
-    }
-  }
-
-  return true;
-};
-
-/**
- * Add a listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.on = function on(event, fn, context) {
-  return addListener(this, event, fn, context, false);
-};
-
-/**
- * Add a one-time listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.once = function once(event, fn, context) {
-  return addListener(this, event, fn, context, true);
-};
-
-/**
- * Remove the listeners of a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn Only remove the listeners that match this function.
- * @param {*} context Only remove the listeners that have this context.
- * @param {Boolean} once Only remove one-time listeners.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
-  var evt = prefix ? prefix + event : event;
-
-  if (!this._events[evt]) return this;
-  if (!fn) {
-    clearEvent(this, evt);
-    return this;
-  }
-
-  var listeners = this._events[evt];
-
-  if (listeners.fn) {
-    if (
-      listeners.fn === fn &&
-      (!once || listeners.once) &&
-      (!context || listeners.context === context)
-    ) {
-      clearEvent(this, evt);
-    }
-  } else {
-    for (var i = 0, events = [], length = listeners.length; i < length; i++) {
-      if (
-        listeners[i].fn !== fn ||
-        (once && !listeners[i].once) ||
-        (context && listeners[i].context !== context)
-      ) {
-        events.push(listeners[i]);
-      }
-    }
-
-    //
-    // Reset the array, or remove it completely if we have no more listeners.
-    //
-    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
-    else clearEvent(this, evt);
-  }
-
-  return this;
-};
-
-/**
- * Remove all listeners, or those of the specified event.
- *
- * @param {(String|Symbol)} [event] The event name.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
-  var evt;
-
-  if (event) {
-    evt = prefix ? prefix + event : event;
-    if (this._events[evt]) clearEvent(this, evt);
-  } else {
-    this._events = new Events();
-    this._eventsCount = 0;
-  }
-
-  return this;
-};
-
-//
-// Alias methods names because people roll like that.
-//
-EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
-EventEmitter.prototype.addListener = EventEmitter.prototype.on;
-
-//
-// Expose the prefix.
-//
-EventEmitter.prefixed = prefix;
-
-//
-// Allow `EventEmitter` to be imported as module namespace.
-//
-EventEmitter.EventEmitter = EventEmitter;
-
-//
-// Expose the module.
-//
-if ('undefined' !== typeof module) {
-  module.exports = EventEmitter;
-}
-
-},{}],"WOs9":[function(require,module,exports) {
-"use strict";
-
-var __read = this && this.__read || function (o, n) {
-  var m = typeof Symbol === "function" && o[Symbol.iterator];
-  if (!m) return o;
-  var i = m.call(o),
-      r,
-      ar = [],
-      e;
-
-  try {
-    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
-      ar.push(r.value);
-    }
-  } catch (error) {
-    e = {
-      error: error
-    };
-  } finally {
-    try {
-      if (r && !r.done && (m = i["return"])) m.call(i);
-    } finally {
-      if (e) throw e.error;
-    }
-  }
-
-  return ar;
-};
-
-var __spreadArray = this && this.__spreadArray || function (to, from) {
-  for (var i = 0, il = from.length, j = to.length; i < il; i++, j++) {
-    to[j] = from[i];
-  }
-
-  return to;
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.LogLevel = void 0;
-var LOG_PREFIX = 'PeerJS: ';
-/*
-Prints log messages depending on the debug level passed in. Defaults to 0.
-0  Prints no logs.
-1  Prints only errors.
-2  Prints errors and warnings.
-3  Prints all logs.
-*/
-
-var LogLevel;
-
-(function (LogLevel) {
-  LogLevel[LogLevel["Disabled"] = 0] = "Disabled";
-  LogLevel[LogLevel["Errors"] = 1] = "Errors";
-  LogLevel[LogLevel["Warnings"] = 2] = "Warnings";
-  LogLevel[LogLevel["All"] = 3] = "All";
-})(LogLevel = exports.LogLevel || (exports.LogLevel = {}));
-
-var Logger =
-/** @class */
-function () {
-  function Logger() {
-    this._logLevel = LogLevel.Disabled;
-  }
-
-  Object.defineProperty(Logger.prototype, "logLevel", {
-    get: function get() {
-      return this._logLevel;
-    },
-    set: function set(logLevel) {
-      this._logLevel = logLevel;
-    },
-    enumerable: false,
-    configurable: true
-  });
-
-  Logger.prototype.log = function () {
-    var args = [];
-
-    for (var _i = 0; _i < arguments.length; _i++) {
-      args[_i] = arguments[_i];
-    }
-
-    if (this._logLevel >= LogLevel.All) {
-      this._print.apply(this, __spreadArray([LogLevel.All], __read(args)));
-    }
-  };
-
-  Logger.prototype.warn = function () {
-    var args = [];
-
-    for (var _i = 0; _i < arguments.length; _i++) {
-      args[_i] = arguments[_i];
-    }
-
-    if (this._logLevel >= LogLevel.Warnings) {
-      this._print.apply(this, __spreadArray([LogLevel.Warnings], __read(args)));
-    }
-  };
-
-  Logger.prototype.error = function () {
-    var args = [];
-
-    for (var _i = 0; _i < arguments.length; _i++) {
-      args[_i] = arguments[_i];
-    }
-
-    if (this._logLevel >= LogLevel.Errors) {
-      this._print.apply(this, __spreadArray([LogLevel.Errors], __read(args)));
-    }
-  };
-
-  Logger.prototype.setLogFunction = function (fn) {
-    this._print = fn;
-  };
-
-  Logger.prototype._print = function (logLevel) {
-    var rest = [];
-
-    for (var _i = 1; _i < arguments.length; _i++) {
-      rest[_i - 1] = arguments[_i];
-    }
-
-    var copy = __spreadArray([LOG_PREFIX], __read(rest));
-
-    for (var i in copy) {
-      if (copy[i] instanceof Error) {
-        copy[i] = "(" + copy[i].name + ") " + copy[i].message;
-      }
-    }
-
-    if (logLevel >= LogLevel.All) {
-      console.log.apply(console, __spreadArray([], __read(copy)));
-    } else if (logLevel >= LogLevel.Warnings) {
-      console.warn.apply(console, __spreadArray(["WARNING"], __read(copy)));
-    } else if (logLevel >= LogLevel.Errors) {
-      console.error.apply(console, __spreadArray(["ERROR"], __read(copy)));
-    }
-  };
-
-  return Logger;
-}();
-
-exports.default = new Logger();
-},{}],"ZRYf":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.ServerMessageType = exports.SocketEventType = exports.SerializationType = exports.PeerErrorType = exports.PeerEventType = exports.ConnectionType = exports.ConnectionEventType = void 0;
-var ConnectionEventType;
-
-(function (ConnectionEventType) {
-  ConnectionEventType["Open"] = "open";
-  ConnectionEventType["Stream"] = "stream";
-  ConnectionEventType["Data"] = "data";
-  ConnectionEventType["Close"] = "close";
-  ConnectionEventType["Error"] = "error";
-  ConnectionEventType["IceStateChanged"] = "iceStateChanged";
-})(ConnectionEventType = exports.ConnectionEventType || (exports.ConnectionEventType = {}));
-
-var ConnectionType;
-
-(function (ConnectionType) {
-  ConnectionType["Data"] = "data";
-  ConnectionType["Media"] = "media";
-})(ConnectionType = exports.ConnectionType || (exports.ConnectionType = {}));
-
-var PeerEventType;
-
-(function (PeerEventType) {
-  PeerEventType["Open"] = "open";
-  PeerEventType["Close"] = "close";
-  PeerEventType["Connection"] = "connection";
-  PeerEventType["Call"] = "call";
-  PeerEventType["Disconnected"] = "disconnected";
-  PeerEventType["Error"] = "error";
-})(PeerEventType = exports.PeerEventType || (exports.PeerEventType = {}));
-
-var PeerErrorType;
-
-(function (PeerErrorType) {
-  PeerErrorType["BrowserIncompatible"] = "browser-incompatible";
-  PeerErrorType["Disconnected"] = "disconnected";
-  PeerErrorType["InvalidID"] = "invalid-id";
-  PeerErrorType["InvalidKey"] = "invalid-key";
-  PeerErrorType["Network"] = "network";
-  PeerErrorType["PeerUnavailable"] = "peer-unavailable";
-  PeerErrorType["SslUnavailable"] = "ssl-unavailable";
-  PeerErrorType["ServerError"] = "server-error";
-  PeerErrorType["SocketError"] = "socket-error";
-  PeerErrorType["SocketClosed"] = "socket-closed";
-  PeerErrorType["UnavailableID"] = "unavailable-id";
-  PeerErrorType["WebRTC"] = "webrtc";
-})(PeerErrorType = exports.PeerErrorType || (exports.PeerErrorType = {}));
-
-var SerializationType;
-
-(function (SerializationType) {
-  SerializationType["Binary"] = "binary";
-  SerializationType["BinaryUTF8"] = "binary-utf8";
-  SerializationType["JSON"] = "json";
-})(SerializationType = exports.SerializationType || (exports.SerializationType = {}));
-
-var SocketEventType;
-
-(function (SocketEventType) {
-  SocketEventType["Message"] = "message";
-  SocketEventType["Disconnected"] = "disconnected";
-  SocketEventType["Error"] = "error";
-  SocketEventType["Close"] = "close";
-})(SocketEventType = exports.SocketEventType || (exports.SocketEventType = {}));
-
-var ServerMessageType;
-
-(function (ServerMessageType) {
-  ServerMessageType["Heartbeat"] = "HEARTBEAT";
-  ServerMessageType["Candidate"] = "CANDIDATE";
-  ServerMessageType["Offer"] = "OFFER";
-  ServerMessageType["Answer"] = "ANSWER";
-  ServerMessageType["Open"] = "OPEN";
-  ServerMessageType["Error"] = "ERROR";
-  ServerMessageType["IdTaken"] = "ID-TAKEN";
-  ServerMessageType["InvalidKey"] = "INVALID-KEY";
-  ServerMessageType["Leave"] = "LEAVE";
-  ServerMessageType["Expire"] = "EXPIRE"; // The offer sent to a peer has expired without response.
-})(ServerMessageType = exports.ServerMessageType || (exports.ServerMessageType = {}));
-},{}],"wJlv":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-var __read = this && this.__read || function (o, n) {
-  var m = typeof Symbol === "function" && o[Symbol.iterator];
-  if (!m) return o;
-  var i = m.call(o),
-      r,
-      ar = [],
-      e;
-
-  try {
-    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
-      ar.push(r.value);
-    }
-  } catch (error) {
-    e = {
-      error: error
-    };
-  } finally {
-    try {
-      if (r && !r.done && (m = i["return"])) m.call(i);
-    } finally {
-      if (e) throw e.error;
-    }
-  }
-
-  return ar;
-};
-
-var __spreadArray = this && this.__spreadArray || function (to, from) {
-  for (var i = 0, il = from.length, j = to.length; i < il; i++, j++) {
-    to[j] = from[i];
-  }
-
-  return to;
-};
-
-var __values = this && this.__values || function (o) {
-  var s = typeof Symbol === "function" && Symbol.iterator,
-      m = s && o[s],
-      i = 0;
-  if (m) return m.call(o);
-  if (o && typeof o.length === "number") return {
-    next: function next() {
-      if (o && i >= o.length) o = void 0;
-      return {
-        value: o && o[i++],
-        done: !o
-      };
-    }
-  };
-  throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.Socket = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var enums_1 = require("./enums");
-/**
- * An abstraction on top of WebSockets to provide fastest
- * possible connection for peers.
- */
-
-
-var Socket =
-/** @class */
-function (_super) {
-  __extends(Socket, _super);
-
-  function Socket(secure, host, port, path, key, pingInterval) {
-    if (pingInterval === void 0) {
-      pingInterval = 5000;
-    }
-
-    var _this = _super.call(this) || this;
-
-    _this.pingInterval = pingInterval;
-    _this._disconnected = true;
-    _this._messagesQueue = [];
-    var wsProtocol = secure ? "wss://" : "ws://";
-    _this._baseUrl = wsProtocol + host + ":" + port + path + "peerjs?key=" + key;
-    return _this;
-  }
-
-  Socket.prototype.start = function (id, token) {
-    var _this = this;
-
-    this._id = id;
-    var wsUrl = this._baseUrl + "&id=" + id + "&token=" + token;
-
-    if (!!this._socket || !this._disconnected) {
-      return;
-    }
-
-    this._socket = new WebSocket(wsUrl);
-    this._disconnected = false;
-
-    this._socket.onmessage = function (event) {
-      var data;
-
-      try {
-        data = JSON.parse(event.data);
-        logger_1.default.log("Server message received:", data);
-      } catch (e) {
-        logger_1.default.log("Invalid server message", event.data);
-        return;
-      }
-
-      _this.emit(enums_1.SocketEventType.Message, data);
-    };
-
-    this._socket.onclose = function (event) {
-      if (_this._disconnected) {
-        return;
-      }
-
-      logger_1.default.log("Socket closed.", event);
-
-      _this._cleanup();
-
-      _this._disconnected = true;
-
-      _this.emit(enums_1.SocketEventType.Disconnected);
-    }; // Take care of the queue of connections if necessary and make sure Peer knows
-    // socket is open.
-
-
-    this._socket.onopen = function () {
-      if (_this._disconnected) {
-        return;
-      }
-
-      _this._sendQueuedMessages();
-
-      logger_1.default.log("Socket open");
-
-      _this._scheduleHeartbeat();
-    };
-  };
-
-  Socket.prototype._scheduleHeartbeat = function () {
-    var _this = this;
-
-    this._wsPingTimer = setTimeout(function () {
-      _this._sendHeartbeat();
-    }, this.pingInterval);
-  };
-
-  Socket.prototype._sendHeartbeat = function () {
-    if (!this._wsOpen()) {
-      logger_1.default.log("Cannot send heartbeat, because socket closed");
-      return;
-    }
-
-    var message = JSON.stringify({
-      type: enums_1.ServerMessageType.Heartbeat
-    });
-
-    this._socket.send(message);
-
-    this._scheduleHeartbeat();
-  };
-  /** Is the websocket currently open? */
-
-
-  Socket.prototype._wsOpen = function () {
-    return !!this._socket && this._socket.readyState === 1;
-  };
-  /** Send queued messages. */
-
-
-  Socket.prototype._sendQueuedMessages = function () {
-    var e_1, _a; //Create copy of queue and clear it,
-    //because send method push the message back to queue if smth will go wrong
-
-
-    var copiedQueue = __spreadArray([], __read(this._messagesQueue));
-
-    this._messagesQueue = [];
-
-    try {
-      for (var copiedQueue_1 = __values(copiedQueue), copiedQueue_1_1 = copiedQueue_1.next(); !copiedQueue_1_1.done; copiedQueue_1_1 = copiedQueue_1.next()) {
-        var message = copiedQueue_1_1.value;
-        this.send(message);
-      }
-    } catch (e_1_1) {
-      e_1 = {
-        error: e_1_1
-      };
-    } finally {
-      try {
-        if (copiedQueue_1_1 && !copiedQueue_1_1.done && (_a = copiedQueue_1.return)) _a.call(copiedQueue_1);
-      } finally {
-        if (e_1) throw e_1.error;
-      }
-    }
-  };
-  /** Exposed send for DC & Peer. */
-
-
-  Socket.prototype.send = function (data) {
-    if (this._disconnected) {
-      return;
-    } // If we didn't get an ID yet, we can't yet send anything so we should queue
-    // up these messages.
-
-
-    if (!this._id) {
-      this._messagesQueue.push(data);
-
-      return;
-    }
-
-    if (!data.type) {
-      this.emit(enums_1.SocketEventType.Error, "Invalid message");
-      return;
-    }
-
-    if (!this._wsOpen()) {
-      return;
-    }
-
-    var message = JSON.stringify(data);
-
-    this._socket.send(message);
-  };
-
-  Socket.prototype.close = function () {
-    if (this._disconnected) {
-      return;
-    }
-
-    this._cleanup();
-
-    this._disconnected = true;
-  };
-
-  Socket.prototype._cleanup = function () {
-    if (this._socket) {
-      this._socket.onopen = this._socket.onmessage = this._socket.onclose = null;
-
-      this._socket.close();
-
-      this._socket = undefined;
-    }
-
-    clearTimeout(this._wsPingTimer);
-  };
-
-  return Socket;
-}(eventemitter3_1.EventEmitter);
-
-exports.Socket = Socket;
-},{"eventemitter3":"JJlS","./logger":"WOs9","./enums":"ZRYf"}],"HCdX":[function(require,module,exports) {
-"use strict";
-
-var __assign = this && this.__assign || function () {
-  __assign = Object.assign || function (t) {
-    for (var s, i = 1, n = arguments.length; i < n; i++) {
-      s = arguments[i];
-
-      for (var p in s) {
-        if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
-      }
-    }
-
-    return t;
-  };
-
-  return __assign.apply(this, arguments);
-};
-
-var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
-  function adopt(value) {
-    return value instanceof P ? value : new P(function (resolve) {
-      resolve(value);
-    });
-  }
-
-  return new (P || (P = Promise))(function (resolve, reject) {
-    function fulfilled(value) {
-      try {
-        step(generator.next(value));
-      } catch (e) {
-        reject(e);
-      }
-    }
-
-    function rejected(value) {
-      try {
-        step(generator["throw"](value));
-      } catch (e) {
-        reject(e);
-      }
-    }
-
-    function step(result) {
-      result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
-    }
-
-    step((generator = generator.apply(thisArg, _arguments || [])).next());
-  });
-};
-
-var __generator = this && this.__generator || function (thisArg, body) {
-  var _ = {
-    label: 0,
-    sent: function sent() {
-      if (t[0] & 1) throw t[1];
-      return t[1];
-    },
-    trys: [],
-    ops: []
-  },
-      f,
-      y,
-      t,
-      g;
-  return g = {
-    next: verb(0),
-    "throw": verb(1),
-    "return": verb(2)
-  }, typeof Symbol === "function" && (g[Symbol.iterator] = function () {
-    return this;
-  }), g;
-
-  function verb(n) {
-    return function (v) {
-      return step([n, v]);
-    };
-  }
-
-  function step(op) {
-    if (f) throw new TypeError("Generator is already executing.");
-
-    while (_) {
-      try {
-        if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
-        if (y = 0, t) op = [op[0] & 2, t.value];
-
-        switch (op[0]) {
-          case 0:
-          case 1:
-            t = op;
-            break;
-
-          case 4:
-            _.label++;
-            return {
-              value: op[1],
-              done: false
-            };
-
-          case 5:
-            _.label++;
-            y = op[1];
-            op = [0];
-            continue;
-
-          case 7:
-            op = _.ops.pop();
-
-            _.trys.pop();
-
-            continue;
-
-          default:
-            if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {
-              _ = 0;
-              continue;
-            }
-
-            if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {
-              _.label = op[1];
-              break;
-            }
-
-            if (op[0] === 6 && _.label < t[1]) {
-              _.label = t[1];
-              t = op;
-              break;
-            }
-
-            if (t && _.label < t[2]) {
-              _.label = t[2];
-
-              _.ops.push(op);
-
-              break;
-            }
-
-            if (t[2]) _.ops.pop();
-
-            _.trys.pop();
-
-            continue;
-        }
-
-        op = body.call(thisArg, _);
-      } catch (e) {
-        op = [6, e];
-        y = 0;
-      } finally {
-        f = t = 0;
-      }
-    }
-
-    if (op[0] & 5) throw op[1];
-    return {
-      value: op[0] ? op[1] : void 0,
-      done: true
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-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.Negotiator = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var enums_1 = require("./enums");
-/**
- * Manages all negotiations between Peers.
- */
-
-
-var Negotiator =
-/** @class */
-function () {
-  function Negotiator(connection) {
-    this.connection = connection;
-  }
-  /** Returns a PeerConnection object set up correctly (for data, media). */
-
-
-  Negotiator.prototype.startConnection = function (options) {
-    var peerConnection = this._startPeerConnection(); // Set the connection's PC.
-
-
-    this.connection.peerConnection = peerConnection;
-
-    if (this.connection.type === enums_1.ConnectionType.Media && options._stream) {
-      this._addTracksToConnection(options._stream, peerConnection);
-    } // What do we need to do now?
-
-
-    if (options.originator) {
-      if (this.connection.type === enums_1.ConnectionType.Data) {
-        var dataConnection = this.connection;
-        var config = {
-          ordered: !!options.reliable
-        };
-        var dataChannel = peerConnection.createDataChannel(dataConnection.label, config);
-        dataConnection.initialize(dataChannel);
-      }
-
-      this._makeOffer();
-    } else {
-      this.handleSDP("OFFER", options.sdp);
-    }
-  };
-  /** Start a PC. */
-
-
-  Negotiator.prototype._startPeerConnection = function () {
-    logger_1.default.log("Creating RTCPeerConnection.");
-    var peerConnection = new RTCPeerConnection(this.connection.provider.options.config);
-
-    this._setupListeners(peerConnection);
-
-    return peerConnection;
-  };
-  /** Set up various WebRTC listeners. */
-
-
-  Negotiator.prototype._setupListeners = function (peerConnection) {
-    var _this = this;
-
-    var peerId = this.connection.peer;
-    var connectionId = this.connection.connectionId;
-    var connectionType = this.connection.type;
-    var provider = this.connection.provider; // ICE CANDIDATES.
-
-    logger_1.default.log("Listening for ICE candidates.");
-
-    peerConnection.onicecandidate = function (evt) {
-      if (!evt.candidate || !evt.candidate.candidate) return;
-      logger_1.default.log("Received ICE candidates for " + peerId + ":", evt.candidate);
-      provider.socket.send({
-        type: enums_1.ServerMessageType.Candidate,
-        payload: {
-          candidate: evt.candidate,
-          type: connectionType,
-          connectionId: connectionId
-        },
-        dst: peerId
-      });
-    };
-
-    peerConnection.oniceconnectionstatechange = function () {
-      switch (peerConnection.iceConnectionState) {
-        case "failed":
-          logger_1.default.log("iceConnectionState is failed, closing connections to " + peerId);
-
-          _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Negotiation of connection to " + peerId + " failed."));
-
-          _this.connection.close();
-
-          break;
-
-        case "closed":
-          logger_1.default.log("iceConnectionState is closed, closing connections to " + peerId);
-
-          _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Connection to " + peerId + " closed."));
-
-          _this.connection.close();
-
-          break;
-
-        case "disconnected":
-          logger_1.default.log("iceConnectionState changed to disconnected on the connection with " + peerId);
-          break;
-
-        case "completed":
-          peerConnection.onicecandidate = util_1.util.noop;
-          break;
-      }
-
-      _this.connection.emit(enums_1.ConnectionEventType.IceStateChanged, peerConnection.iceConnectionState);
-    }; // DATACONNECTION.
-
-
-    logger_1.default.log("Listening for data channel"); // Fired between offer and answer, so options should already be saved
-    // in the options hash.
-
-    peerConnection.ondatachannel = function (evt) {
-      logger_1.default.log("Received data channel");
-      var dataChannel = evt.channel;
-      var connection = provider.getConnection(peerId, connectionId);
-      connection.initialize(dataChannel);
-    }; // MEDIACONNECTION.
-
-
-    logger_1.default.log("Listening for remote stream");
-
-    peerConnection.ontrack = function (evt) {
-      logger_1.default.log("Received remote stream");
-      var stream = evt.streams[0];
-      var connection = provider.getConnection(peerId, connectionId);
-
-      if (connection.type === enums_1.ConnectionType.Media) {
-        var mediaConnection = connection;
-
-        _this._addStreamToMediaConnection(stream, mediaConnection);
-      }
-    };
-  };
-
-  Negotiator.prototype.cleanup = function () {
-    logger_1.default.log("Cleaning up PeerConnection to " + this.connection.peer);
-    var peerConnection = this.connection.peerConnection;
-
-    if (!peerConnection) {
-      return;
-    }
-
-    this.connection.peerConnection = null; //unsubscribe from all PeerConnection's events
-
-    peerConnection.onicecandidate = peerConnection.oniceconnectionstatechange = peerConnection.ondatachannel = peerConnection.ontrack = function () {};
-
-    var peerConnectionNotClosed = peerConnection.signalingState !== "closed";
-    var dataChannelNotClosed = false;
-
-    if (this.connection.type === enums_1.ConnectionType.Data) {
-      var dataConnection = this.connection;
-      var dataChannel = dataConnection.dataChannel;
-
-      if (dataChannel) {
-        dataChannelNotClosed = !!dataChannel.readyState && dataChannel.readyState !== "closed";
-      }
-    }
-
-    if (peerConnectionNotClosed || dataChannelNotClosed) {
-      peerConnection.close();
-    }
-  };
-
-  Negotiator.prototype._makeOffer = function () {
-    return __awaiter(this, void 0, Promise, function () {
-      var peerConnection, provider, offer, payload, dataConnection, err_2, err_1_1;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            peerConnection = this.connection.peerConnection;
-            provider = this.connection.provider;
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 7,, 8]);
-
-            return [4
-            /*yield*/
-            , peerConnection.createOffer(this.connection.options.constraints)];
-
-          case 2:
-            offer = _a.sent();
-            logger_1.default.log("Created offer.");
-
-            if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
-              offer.sdp = this.connection.options.sdpTransform(offer.sdp) || offer.sdp;
-            }
-
-            _a.label = 3;
-
-          case 3:
-            _a.trys.push([3, 5,, 6]);
-
-            return [4
-            /*yield*/
-            , peerConnection.setLocalDescription(offer)];
-
-          case 4:
-            _a.sent();
-
-            logger_1.default.log("Set localDescription:", offer, "for:" + this.connection.peer);
-            payload = {
-              sdp: offer,
-              type: this.connection.type,
-              connectionId: this.connection.connectionId,
-              metadata: this.connection.metadata,
-              browser: util_1.util.browser
-            };
-
-            if (this.connection.type === enums_1.ConnectionType.Data) {
-              dataConnection = this.connection;
-              payload = __assign(__assign({}, payload), {
-                label: dataConnection.label,
-                reliable: dataConnection.reliable,
-                serialization: dataConnection.serialization
-              });
-            }
-
-            provider.socket.send({
-              type: enums_1.ServerMessageType.Offer,
-              payload: payload,
-              dst: this.connection.peer
-            });
-            return [3
-            /*break*/
-            , 6];
-
-          case 5:
-            err_2 = _a.sent(); // TODO: investigate why _makeOffer is being called from the answer
-
-            if (err_2 != "OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer") {
-              provider.emitError(enums_1.PeerErrorType.WebRTC, err_2);
-              logger_1.default.log("Failed to setLocalDescription, ", err_2);
-            }
-
-            return [3
-            /*break*/
-            , 6];
-
-          case 6:
-            return [3
-            /*break*/
-            , 8];
-
-          case 7:
-            err_1_1 = _a.sent();
-            provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_1);
-            logger_1.default.log("Failed to createOffer, ", err_1_1);
-            return [3
-            /*break*/
-            , 8];
-
-          case 8:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-
-  Negotiator.prototype._makeAnswer = function () {
-    return __awaiter(this, void 0, Promise, function () {
-      var peerConnection, provider, answer, err_3, err_1_2;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            peerConnection = this.connection.peerConnection;
-            provider = this.connection.provider;
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 7,, 8]);
-
-            return [4
-            /*yield*/
-            , peerConnection.createAnswer()];
-
-          case 2:
-            answer = _a.sent();
-            logger_1.default.log("Created answer.");
-
-            if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
-              answer.sdp = this.connection.options.sdpTransform(answer.sdp) || answer.sdp;
-            }
-
-            _a.label = 3;
-
-          case 3:
-            _a.trys.push([3, 5,, 6]);
-
-            return [4
-            /*yield*/
-            , peerConnection.setLocalDescription(answer)];
-
-          case 4:
-            _a.sent();
-
-            logger_1.default.log("Set localDescription:", answer, "for:" + this.connection.peer);
-            provider.socket.send({
-              type: enums_1.ServerMessageType.Answer,
-              payload: {
-                sdp: answer,
-                type: this.connection.type,
-                connectionId: this.connection.connectionId,
-                browser: util_1.util.browser
-              },
-              dst: this.connection.peer
-            });
-            return [3
-            /*break*/
-            , 6];
-
-          case 5:
-            err_3 = _a.sent();
-            provider.emitError(enums_1.PeerErrorType.WebRTC, err_3);
-            logger_1.default.log("Failed to setLocalDescription, ", err_3);
-            return [3
-            /*break*/
-            , 6];
-
-          case 6:
-            return [3
-            /*break*/
-            , 8];
-
-          case 7:
-            err_1_2 = _a.sent();
-            provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_2);
-            logger_1.default.log("Failed to create answer, ", err_1_2);
-            return [3
-            /*break*/
-            , 8];
-
-          case 8:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-  /** Handle an SDP. */
-
-
-  Negotiator.prototype.handleSDP = function (type, sdp) {
-    return __awaiter(this, void 0, Promise, function () {
-      var peerConnection, provider, self, err_4;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            sdp = new RTCSessionDescription(sdp);
-            peerConnection = this.connection.peerConnection;
-            provider = this.connection.provider;
-            logger_1.default.log("Setting remote description", sdp);
-            self = this;
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 5,, 6]);
-
-            return [4
-            /*yield*/
-            , peerConnection.setRemoteDescription(sdp)];
-
-          case 2:
-            _a.sent();
-
-            logger_1.default.log("Set remoteDescription:" + type + " for:" + this.connection.peer);
-            if (!(type === "OFFER")) return [3
-            /*break*/
-            , 4];
-            return [4
-            /*yield*/
-            , self._makeAnswer()];
-
-          case 3:
-            _a.sent();
-
-            _a.label = 4;
-
-          case 4:
-            return [3
-            /*break*/
-            , 6];
-
-          case 5:
-            err_4 = _a.sent();
-            provider.emitError(enums_1.PeerErrorType.WebRTC, err_4);
-            logger_1.default.log("Failed to setRemoteDescription, ", err_4);
-            return [3
-            /*break*/
-            , 6];
-
-          case 6:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-  /** Handle a candidate. */
-
-
-  Negotiator.prototype.handleCandidate = function (ice) {
-    return __awaiter(this, void 0, Promise, function () {
-      var candidate, sdpMLineIndex, sdpMid, peerConnection, provider, err_5;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            logger_1.default.log("handleCandidate:", ice);
-            candidate = ice.candidate;
-            sdpMLineIndex = ice.sdpMLineIndex;
-            sdpMid = ice.sdpMid;
-            peerConnection = this.connection.peerConnection;
-            provider = this.connection.provider;
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 3,, 4]);
-
-            return [4
-            /*yield*/
-            , peerConnection.addIceCandidate(new RTCIceCandidate({
-              sdpMid: sdpMid,
-              sdpMLineIndex: sdpMLineIndex,
-              candidate: candidate
-            }))];
-
-          case 2:
-            _a.sent();
-
-            logger_1.default.log("Added ICE candidate for:" + this.connection.peer);
-            return [3
-            /*break*/
-            , 4];
-
-          case 3:
-            err_5 = _a.sent();
-            provider.emitError(enums_1.PeerErrorType.WebRTC, err_5);
-            logger_1.default.log("Failed to handleCandidate, ", err_5);
-            return [3
-            /*break*/
-            , 4];
-
-          case 4:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-
-  Negotiator.prototype._addTracksToConnection = function (stream, peerConnection) {
-    logger_1.default.log("add tracks from stream " + stream.id + " to peer connection");
-
-    if (!peerConnection.addTrack) {
-      return logger_1.default.error("Your browser does't support RTCPeerConnection#addTrack. Ignored.");
-    }
-
-    stream.getTracks().forEach(function (track) {
-      peerConnection.addTrack(track, stream);
-    });
-  };
-
-  Negotiator.prototype._addStreamToMediaConnection = function (stream, mediaConnection) {
-    logger_1.default.log("add stream " + stream.id + " to media connection " + mediaConnection.connectionId);
-    mediaConnection.addStream(stream);
-  };
-
-  return Negotiator;
-}();
-
-exports.Negotiator = Negotiator;
-},{"./util":"BHXf","./logger":"WOs9","./enums":"ZRYf"}],"tQFK":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.BaseConnection = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var BaseConnection =
-/** @class */
-function (_super) {
-  __extends(BaseConnection, _super);
-
-  function BaseConnection(peer, provider, options) {
-    var _this = _super.call(this) || this;
-
-    _this.peer = peer;
-    _this.provider = provider;
-    _this.options = options;
-    _this._open = false;
-    _this.metadata = options.metadata;
-    return _this;
-  }
-
-  Object.defineProperty(BaseConnection.prototype, "open", {
-    get: function get() {
-      return this._open;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  return BaseConnection;
-}(eventemitter3_1.EventEmitter);
-
-exports.BaseConnection = BaseConnection;
-},{"eventemitter3":"JJlS"}],"dbHP":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-var __assign = this && this.__assign || function () {
-  __assign = Object.assign || function (t) {
-    for (var s, i = 1, n = arguments.length; i < n; i++) {
-      s = arguments[i];
-
-      for (var p in s) {
-        if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
-      }
-    }
-
-    return t;
-  };
-
-  return __assign.apply(this, arguments);
-};
-
-var __values = this && this.__values || function (o) {
-  var s = typeof Symbol === "function" && Symbol.iterator,
-      m = s && o[s],
-      i = 0;
-  if (m) return m.call(o);
-  if (o && typeof o.length === "number") return {
-    next: function next() {
-      if (o && i >= o.length) o = void 0;
-      return {
-        value: o && o[i++],
-        done: !o
-      };
-    }
-  };
-  throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.MediaConnection = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var negotiator_1 = require("./negotiator");
-
-var enums_1 = require("./enums");
-
-var baseconnection_1 = require("./baseconnection");
-/**
- * Wraps the streaming interface between two Peers.
- */
-
-
-var MediaConnection =
-/** @class */
-function (_super) {
-  __extends(MediaConnection, _super);
-
-  function MediaConnection(peerId, provider, options) {
-    var _this = _super.call(this, peerId, provider, options) || this;
-
-    _this._localStream = _this.options._stream;
-    _this.connectionId = _this.options.connectionId || MediaConnection.ID_PREFIX + util_1.util.randomToken();
-    _this._negotiator = new negotiator_1.Negotiator(_this);
-
-    if (_this._localStream) {
-      _this._negotiator.startConnection({
-        _stream: _this._localStream,
-        originator: true
-      });
-    }
-
-    return _this;
-  }
-
-  Object.defineProperty(MediaConnection.prototype, "type", {
-    get: function get() {
-      return enums_1.ConnectionType.Media;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(MediaConnection.prototype, "localStream", {
-    get: function get() {
-      return this._localStream;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(MediaConnection.prototype, "remoteStream", {
-    get: function get() {
-      return this._remoteStream;
-    },
-    enumerable: false,
-    configurable: true
-  });
-
-  MediaConnection.prototype.addStream = function (remoteStream) {
-    logger_1.default.log("Receiving stream", remoteStream);
-    this._remoteStream = remoteStream;
-
-    _super.prototype.emit.call(this, enums_1.ConnectionEventType.Stream, remoteStream); // Should we call this `open`?
-
-  };
-
-  MediaConnection.prototype.handleMessage = function (message) {
-    var type = message.type;
-    var payload = message.payload;
-
-    switch (message.type) {
-      case enums_1.ServerMessageType.Answer:
-        // Forward to negotiator
-        this._negotiator.handleSDP(type, payload.sdp);
-
-        this._open = true;
-        break;
-
-      case enums_1.ServerMessageType.Candidate:
-        this._negotiator.handleCandidate(payload.candidate);
-
-        break;
-
-      default:
-        logger_1.default.warn("Unrecognized message type:" + type + " from peer:" + this.peer);
-        break;
-    }
-  };
-
-  MediaConnection.prototype.answer = function (stream, options) {
-    var e_1, _a;
-
-    if (options === void 0) {
-      options = {};
-    }
-
-    if (this._localStream) {
-      logger_1.default.warn("Local stream already exists on this MediaConnection. Are you answering a call twice?");
-      return;
-    }
-
-    this._localStream = stream;
-
-    if (options && options.sdpTransform) {
-      this.options.sdpTransform = options.sdpTransform;
-    }
-
-    this._negotiator.startConnection(__assign(__assign({}, this.options._payload), {
-      _stream: stream
-    })); // Retrieve lost messages stored because PeerConnection not set up.
-
-
-    var messages = this.provider._getMessages(this.connectionId);
-
-    try {
-      for (var messages_1 = __values(messages), messages_1_1 = messages_1.next(); !messages_1_1.done; messages_1_1 = messages_1.next()) {
-        var message = messages_1_1.value;
-        this.handleMessage(message);
-      }
-    } catch (e_1_1) {
-      e_1 = {
-        error: e_1_1
-      };
-    } finally {
-      try {
-        if (messages_1_1 && !messages_1_1.done && (_a = messages_1.return)) _a.call(messages_1);
-      } finally {
-        if (e_1) throw e_1.error;
-      }
-    }
-
-    this._open = true;
-  };
-  /**
-   * Exposed functionality for users.
-   */
-
-  /** Allows user to close connection. */
-
-
-  MediaConnection.prototype.close = function () {
-    if (this._negotiator) {
-      this._negotiator.cleanup();
-
-      this._negotiator = null;
-    }
-
-    this._localStream = null;
-    this._remoteStream = null;
-
-    if (this.provider) {
-      this.provider._removeConnection(this);
-
-      this.provider = null;
-    }
-
-    if (this.options && this.options._stream) {
-      this.options._stream = null;
-    }
-
-    if (!this.open) {
-      return;
-    }
-
-    this._open = false;
-
-    _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
-  };
-
-  MediaConnection.ID_PREFIX = "mc_";
-  return MediaConnection;
-}(baseconnection_1.BaseConnection);
-
-exports.MediaConnection = MediaConnection;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK"}],"GGp6":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.EncodingQueue = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var EncodingQueue =
-/** @class */
-function (_super) {
-  __extends(EncodingQueue, _super);
-
-  function EncodingQueue() {
-    var _this = _super.call(this) || this;
-
-    _this.fileReader = new FileReader();
-    _this._queue = [];
-    _this._processing = false;
-
-    _this.fileReader.onload = function (evt) {
-      _this._processing = false;
-
-      if (evt.target) {
-        _this.emit('done', evt.target.result);
-      }
-
-      _this.doNextTask();
-    };
-
-    _this.fileReader.onerror = function (evt) {
-      logger_1.default.error("EncodingQueue error:", evt);
-      _this._processing = false;
-
-      _this.destroy();
-
-      _this.emit('error', evt);
-    };
-
-    return _this;
-  }
-
-  Object.defineProperty(EncodingQueue.prototype, "queue", {
-    get: function get() {
-      return this._queue;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(EncodingQueue.prototype, "size", {
-    get: function get() {
-      return this.queue.length;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(EncodingQueue.prototype, "processing", {
-    get: function get() {
-      return this._processing;
-    },
-    enumerable: false,
-    configurable: true
-  });
-
-  EncodingQueue.prototype.enque = function (blob) {
-    this.queue.push(blob);
-    if (this.processing) return;
-    this.doNextTask();
-  };
-
-  EncodingQueue.prototype.destroy = function () {
-    this.fileReader.abort();
-    this._queue = [];
-  };
-
-  EncodingQueue.prototype.doNextTask = function () {
-    if (this.size === 0) return;
-    if (this.processing) return;
-    this._processing = true;
-    this.fileReader.readAsArrayBuffer(this.queue.shift());
-  };
-
-  return EncodingQueue;
-}(eventemitter3_1.EventEmitter);
-
-exports.EncodingQueue = EncodingQueue;
-},{"eventemitter3":"JJlS","./logger":"WOs9"}],"GBTQ":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-var __values = this && this.__values || function (o) {
-  var s = typeof Symbol === "function" && Symbol.iterator,
-      m = s && o[s],
-      i = 0;
-  if (m) return m.call(o);
-  if (o && typeof o.length === "number") return {
-    next: function next() {
-      if (o && i >= o.length) o = void 0;
-      return {
-        value: o && o[i++],
-        done: !o
-      };
-    }
-  };
-  throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.DataConnection = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var negotiator_1 = require("./negotiator");
-
-var enums_1 = require("./enums");
-
-var baseconnection_1 = require("./baseconnection");
-
-var encodingQueue_1 = require("./encodingQueue");
-/**
- * Wraps a DataChannel between two Peers.
- */
-
-
-var DataConnection =
-/** @class */
-function (_super) {
-  __extends(DataConnection, _super);
-
-  function DataConnection(peerId, provider, options) {
-    var _this = _super.call(this, peerId, provider, options) || this;
-
-    _this.stringify = JSON.stringify;
-    _this.parse = JSON.parse;
-    _this._buffer = [];
-    _this._bufferSize = 0;
-    _this._buffering = false;
-    _this._chunkedData = {};
-    _this._encodingQueue = new encodingQueue_1.EncodingQueue();
-    _this.connectionId = _this.options.connectionId || DataConnection.ID_PREFIX + util_1.util.randomToken();
-    _this.label = _this.options.label || _this.connectionId;
-    _this.serialization = _this.options.serialization || enums_1.SerializationType.Binary;
-    _this.reliable = !!_this.options.reliable;
-
-    _this._encodingQueue.on('done', function (ab) {
-      _this._bufferedSend(ab);
-    });
-
-    _this._encodingQueue.on('error', function () {
-      logger_1.default.error("DC#" + _this.connectionId + ": Error occured in encoding from blob to arraybuffer, close DC");
-
-      _this.close();
-    });
-
-    _this._negotiator = new negotiator_1.Negotiator(_this);
-
-    _this._negotiator.startConnection(_this.options._payload || {
-      originator: true
-    });
-
-    return _this;
-  }
-
-  Object.defineProperty(DataConnection.prototype, "type", {
-    get: function get() {
-      return enums_1.ConnectionType.Data;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(DataConnection.prototype, "dataChannel", {
-    get: function get() {
-      return this._dc;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(DataConnection.prototype, "bufferSize", {
-    get: function get() {
-      return this._bufferSize;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  /** Called by the Negotiator when the DataChannel is ready. */
-
-  DataConnection.prototype.initialize = function (dc) {
-    this._dc = dc;
-
-    this._configureDataChannel();
-  };
-
-  DataConnection.prototype._configureDataChannel = function () {
-    var _this = this;
-
-    if (!util_1.util.supports.binaryBlob || util_1.util.supports.reliable) {
-      this.dataChannel.binaryType = "arraybuffer";
-    }
-
-    this.dataChannel.onopen = function () {
-      logger_1.default.log("DC#" + _this.connectionId + " dc connection success");
-      _this._open = true;
-
-      _this.emit(enums_1.ConnectionEventType.Open);
-    };
-
-    this.dataChannel.onmessage = function (e) {
-      logger_1.default.log("DC#" + _this.connectionId + " dc onmessage:", e.data);
-
-      _this._handleDataMessage(e);
-    };
-
-    this.dataChannel.onclose = function () {
-      logger_1.default.log("DC#" + _this.connectionId + " dc closed for:", _this.peer);
-
-      _this.close();
-    };
-  }; // Handles a DataChannel message.
-
-
-  DataConnection.prototype._handleDataMessage = function (_a) {
-    var _this = this;
-
-    var data = _a.data;
-    var datatype = data.constructor;
-    var isBinarySerialization = this.serialization === enums_1.SerializationType.Binary || this.serialization === enums_1.SerializationType.BinaryUTF8;
-    var deserializedData = data;
-
-    if (isBinarySerialization) {
-      if (datatype === Blob) {
-        // Datatype should never be blob
-        util_1.util.blobToArrayBuffer(data, function (ab) {
-          var unpackedData = util_1.util.unpack(ab);
-
-          _this.emit(enums_1.ConnectionEventType.Data, unpackedData);
-        });
-        return;
-      } else if (datatype === ArrayBuffer) {
-        deserializedData = util_1.util.unpack(data);
-      } else if (datatype === String) {
-        // String fallback for binary data for browsers that don't support binary yet
-        var ab = util_1.util.binaryStringToArrayBuffer(data);
-        deserializedData = util_1.util.unpack(ab);
-      }
-    } else if (this.serialization === enums_1.SerializationType.JSON) {
-      deserializedData = this.parse(data);
-    } // Check if we've chunked--if so, piece things back together.
-    // We're guaranteed that this isn't 0.
-
-
-    if (deserializedData.__peerData) {
-      this._handleChunk(deserializedData);
-
-      return;
-    }
-
-    _super.prototype.emit.call(this, enums_1.ConnectionEventType.Data, deserializedData);
-  };
-
-  DataConnection.prototype._handleChunk = function (data) {
-    var id = data.__peerData;
-    var chunkInfo = this._chunkedData[id] || {
-      data: [],
-      count: 0,
-      total: data.total
-    };
-    chunkInfo.data[data.n] = data.data;
-    chunkInfo.count++;
-    this._chunkedData[id] = chunkInfo;
-
-    if (chunkInfo.total === chunkInfo.count) {
-      // Clean up before making the recursive call to `_handleDataMessage`.
-      delete this._chunkedData[id]; // We've received all the chunks--time to construct the complete data.
-
-      var data_1 = new Blob(chunkInfo.data);
-
-      this._handleDataMessage({
-        data: data_1
-      });
-    }
-  };
-  /**
-   * Exposed functionality for users.
-   */
-
-  /** Allows user to close connection. */
-
-
-  DataConnection.prototype.close = function () {
-    this._buffer = [];
-    this._bufferSize = 0;
-    this._chunkedData = {};
-
-    if (this._negotiator) {
-      this._negotiator.cleanup();
-
-      this._negotiator = null;
-    }
-
-    if (this.provider) {
-      this.provider._removeConnection(this);
-
-      this.provider = null;
-    }
-
-    if (this.dataChannel) {
-      this.dataChannel.onopen = null;
-      this.dataChannel.onmessage = null;
-      this.dataChannel.onclose = null;
-      this._dc = null;
-    }
-
-    if (this._encodingQueue) {
-      this._encodingQueue.destroy();
-
-      this._encodingQueue.removeAllListeners();
-
-      this._encodingQueue = null;
-    }
-
-    if (!this.open) {
-      return;
-    }
-
-    this._open = false;
-
-    _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
-  };
-  /** Allows user to send data. */
-
-
-  DataConnection.prototype.send = function (data, chunked) {
-    if (!this.open) {
-      _super.prototype.emit.call(this, enums_1.ConnectionEventType.Error, new Error("Connection is not open. You should listen for the `open` event before sending messages."));
-
-      return;
-    }
-
-    if (this.serialization === enums_1.SerializationType.JSON) {
-      this._bufferedSend(this.stringify(data));
-    } else if (this.serialization === enums_1.SerializationType.Binary || this.serialization === enums_1.SerializationType.BinaryUTF8) {
-      var blob = util_1.util.pack(data);
-
-      if (!chunked && blob.size > util_1.util.chunkedMTU) {
-        this._sendChunks(blob);
-
-        return;
-      }
-
-      if (!util_1.util.supports.binaryBlob) {
-        // We only do this if we really need to (e.g. blobs are not supported),
-        // because this conversion is costly.
-        this._encodingQueue.enque(blob);
-      } else {
-        this._bufferedSend(blob);
-      }
-    } else {
-      this._bufferedSend(data);
-    }
-  };
-
-  DataConnection.prototype._bufferedSend = function (msg) {
-    if (this._buffering || !this._trySend(msg)) {
-      this._buffer.push(msg);
-
-      this._bufferSize = this._buffer.length;
-    }
-  }; // Returns true if the send succeeds.
-
-
-  DataConnection.prototype._trySend = function (msg) {
-    var _this = this;
-
-    if (!this.open) {
-      return false;
-    }
-
-    if (this.dataChannel.bufferedAmount > DataConnection.MAX_BUFFERED_AMOUNT) {
-      this._buffering = true;
-      setTimeout(function () {
-        _this._buffering = false;
-
-        _this._tryBuffer();
-      }, 50);
-      return false;
-    }
-
-    try {
-      this.dataChannel.send(msg);
-    } catch (e) {
-      logger_1.default.error("DC#:" + this.connectionId + " Error when sending:", e);
-      this._buffering = true;
-      this.close();
-      return false;
-    }
-
-    return true;
-  }; // Try to send the first message in the buffer.
-
-
-  DataConnection.prototype._tryBuffer = function () {
-    if (!this.open) {
-      return;
-    }
-
-    if (this._buffer.length === 0) {
-      return;
-    }
-
-    var msg = this._buffer[0];
-
-    if (this._trySend(msg)) {
-      this._buffer.shift();
-
-      this._bufferSize = this._buffer.length;
-
-      this._tryBuffer();
-    }
-  };
-
-  DataConnection.prototype._sendChunks = function (blob) {
-    var e_1, _a;
-
-    var blobs = util_1.util.chunk(blob);
-    logger_1.default.log("DC#" + this.connectionId + " Try to send " + blobs.length + " chunks...");
-
-    try {
-      for (var blobs_1 = __values(blobs), blobs_1_1 = blobs_1.next(); !blobs_1_1.done; blobs_1_1 = blobs_1.next()) {
-        var blob_1 = blobs_1_1.value;
-        this.send(blob_1, true);
-      }
-    } catch (e_1_1) {
-      e_1 = {
-        error: e_1_1
-      };
-    } finally {
-      try {
-        if (blobs_1_1 && !blobs_1_1.done && (_a = blobs_1.return)) _a.call(blobs_1);
-      } finally {
-        if (e_1) throw e_1.error;
-      }
-    }
-  };
-
-  DataConnection.prototype.handleMessage = function (message) {
-    var payload = message.payload;
-
-    switch (message.type) {
-      case enums_1.ServerMessageType.Answer:
-        this._negotiator.handleSDP(message.type, payload.sdp);
-
-        break;
-
-      case enums_1.ServerMessageType.Candidate:
-        this._negotiator.handleCandidate(payload.candidate);
-
-        break;
-
-      default:
-        logger_1.default.warn("Unrecognized message type:", message.type, "from peer:", this.peer);
-        break;
-    }
-  };
-
-  DataConnection.ID_PREFIX = "dc_";
-  DataConnection.MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;
-  return DataConnection;
-}(baseconnection_1.BaseConnection);
-
-exports.DataConnection = DataConnection;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK","./encodingQueue":"GGp6"}],"in7L":[function(require,module,exports) {
-"use strict";
-
-var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
-  function adopt(value) {
-    return value instanceof P ? value : new P(function (resolve) {
-      resolve(value);
-    });
-  }
-
-  return new (P || (P = Promise))(function (resolve, reject) {
-    function fulfilled(value) {
-      try {
-        step(generator.next(value));
-      } catch (e) {
-        reject(e);
-      }
-    }
-
-    function rejected(value) {
-      try {
-        step(generator["throw"](value));
-      } catch (e) {
-        reject(e);
-      }
-    }
-
-    function step(result) {
-      result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
-    }
-
-    step((generator = generator.apply(thisArg, _arguments || [])).next());
-  });
-};
-
-var __generator = this && this.__generator || function (thisArg, body) {
-  var _ = {
-    label: 0,
-    sent: function sent() {
-      if (t[0] & 1) throw t[1];
-      return t[1];
-    },
-    trys: [],
-    ops: []
-  },
-      f,
-      y,
-      t,
-      g;
-  return g = {
-    next: verb(0),
-    "throw": verb(1),
-    "return": verb(2)
-  }, typeof Symbol === "function" && (g[Symbol.iterator] = function () {
-    return this;
-  }), g;
-
-  function verb(n) {
-    return function (v) {
-      return step([n, v]);
-    };
-  }
-
-  function step(op) {
-    if (f) throw new TypeError("Generator is already executing.");
-
-    while (_) {
-      try {
-        if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
-        if (y = 0, t) op = [op[0] & 2, t.value];
-
-        switch (op[0]) {
-          case 0:
-          case 1:
-            t = op;
-            break;
-
-          case 4:
-            _.label++;
-            return {
-              value: op[1],
-              done: false
-            };
-
-          case 5:
-            _.label++;
-            y = op[1];
-            op = [0];
-            continue;
-
-          case 7:
-            op = _.ops.pop();
-
-            _.trys.pop();
-
-            continue;
-
-          default:
-            if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {
-              _ = 0;
-              continue;
-            }
-
-            if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {
-              _.label = op[1];
-              break;
-            }
-
-            if (op[0] === 6 && _.label < t[1]) {
-              _.label = t[1];
-              t = op;
-              break;
-            }
-
-            if (t && _.label < t[2]) {
-              _.label = t[2];
-
-              _.ops.push(op);
-
-              break;
-            }
-
-            if (t[2]) _.ops.pop();
-
-            _.trys.pop();
-
-            continue;
-        }
-
-        op = body.call(thisArg, _);
-      } catch (e) {
-        op = [6, e];
-        y = 0;
-      } finally {
-        f = t = 0;
-      }
-    }
-
-    if (op[0] & 5) throw op[1];
-    return {
-      value: op[0] ? op[1] : void 0,
-      done: true
-    };
-  }
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.API = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var API =
-/** @class */
-function () {
-  function API(_options) {
-    this._options = _options;
-  }
-
-  API.prototype._buildUrl = function (method) {
-    var protocol = this._options.secure ? "https://" : "http://";
-    var url = protocol + this._options.host + ":" + this._options.port + this._options.path + this._options.key + "/" + method;
-    var queryString = "?ts=" + new Date().getTime() + "" + Math.random();
-    url += queryString;
-    return url;
-  };
-  /** Get a unique ID from the server via XHR and initialize with it. */
-
-
-  API.prototype.retrieveId = function () {
-    return __awaiter(this, void 0, Promise, function () {
-      var url, response, error_1, pathError;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            url = this._buildUrl("id");
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 3,, 4]);
-
-            return [4
-            /*yield*/
-            , fetch(url)];
-
-          case 2:
-            response = _a.sent();
-
-            if (response.status !== 200) {
-              throw new Error("Error. Status:" + response.status);
-            }
-
-            return [2
-            /*return*/
-            , response.text()];
-
-          case 3:
-            error_1 = _a.sent();
-            logger_1.default.error("Error retrieving ID", error_1);
-            pathError = "";
-
-            if (this._options.path === "/" && this._options.host !== util_1.util.CLOUD_HOST) {
-              pathError = " If you passed in a `path` to your self-hosted PeerServer, " + "you'll also need to pass in that same path when creating a new " + "Peer.";
-            }
-
-            throw new Error("Could not get an ID from the server." + pathError);
-
-          case 4:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-  /** @deprecated */
-
-
-  API.prototype.listAllPeers = function () {
-    return __awaiter(this, void 0, Promise, function () {
-      var url, response, helpfulError, error_2;
-      return __generator(this, function (_a) {
-        switch (_a.label) {
-          case 0:
-            url = this._buildUrl("peers");
-            _a.label = 1;
-
-          case 1:
-            _a.trys.push([1, 3,, 4]);
-
-            return [4
-            /*yield*/
-            , fetch(url)];
-
-          case 2:
-            response = _a.sent();
-
-            if (response.status !== 200) {
-              if (response.status === 401) {
-                helpfulError = "";
-
-                if (this._options.host === util_1.util.CLOUD_HOST) {
-                  helpfulError = "It looks like you're using the cloud server. You can email " + "team@peerjs.com to enable peer listing for your API key.";
-                } else {
-                  helpfulError = "You need to enable `allow_discovery` on your self-hosted " + "PeerServer to use this feature.";
-                }
-
-                throw new Error("It doesn't look like you have permission to list peers IDs. " + helpfulError);
-              }
-
-              throw new Error("Error. Status:" + response.status);
-            }
-
-            return [2
-            /*return*/
-            , response.json()];
-
-          case 3:
-            error_2 = _a.sent();
-            logger_1.default.error("Error retrieving list peers", error_2);
-            throw new Error("Could not get list peers from the server." + error_2);
-
-          case 4:
-            return [2
-            /*return*/
-            ];
-        }
-      });
-    });
-  };
-
-  return API;
-}();
-
-exports.API = API;
-},{"./util":"BHXf","./logger":"WOs9"}],"Hxpd":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
-  var _extendStatics = function extendStatics(d, b) {
-    _extendStatics = Object.setPrototypeOf || {
-      __proto__: []
-    } instanceof Array && function (d, b) {
-      d.__proto__ = b;
-    } || function (d, b) {
-      for (var p in b) {
-        if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
-      }
-    };
-
-    return _extendStatics(d, b);
-  };
-
-  return function (d, b) {
-    if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
-    _extendStatics(d, b);
-
-    function __() {
-      this.constructor = d;
-    }
-
-    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
-  };
-}();
-
-var __assign = this && this.__assign || function () {
-  __assign = Object.assign || function (t) {
-    for (var s, i = 1, n = arguments.length; i < n; i++) {
-      s = arguments[i];
-
-      for (var p in s) {
-        if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
-      }
-    }
-
-    return t;
-  };
-
-  return __assign.apply(this, arguments);
-};
-
-var __values = this && this.__values || function (o) {
-  var s = typeof Symbol === "function" && Symbol.iterator,
-      m = s && o[s],
-      i = 0;
-  if (m) return m.call(o);
-  if (o && typeof o.length === "number") return {
-    next: function next() {
-      if (o && i >= o.length) o = void 0;
-      return {
-        value: o && o[i++],
-        done: !o
-      };
-    }
-  };
-  throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __read = this && this.__read || function (o, n) {
-  var m = typeof Symbol === "function" && o[Symbol.iterator];
-  if (!m) return o;
-  var i = m.call(o),
-      r,
-      ar = [],
-      e;
-
-  try {
-    while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
-      ar.push(r.value);
-    }
-  } catch (error) {
-    e = {
-      error: error
-    };
-  } finally {
-    try {
-      if (r && !r.done && (m = i["return"])) m.call(i);
-    } finally {
-      if (e) throw e.error;
-    }
-  }
-
-  return ar;
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
-  return mod && mod.__esModule ? mod : {
-    "default": mod
-  };
-};
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.Peer = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var socket_1 = require("./socket");
-
-var mediaconnection_1 = require("./mediaconnection");
-
-var dataconnection_1 = require("./dataconnection");
-
-var enums_1 = require("./enums");
-
-var api_1 = require("./api");
-
-var PeerOptions =
-/** @class */
-function () {
-  function PeerOptions() {}
-
-  return PeerOptions;
-}();
-/**
- * A peer who can initiate connections with other peers.
- */
-
-
-var Peer =
-/** @class */
-function (_super) {
-  __extends(Peer, _super);
-
-  function Peer(id, options) {
-    var _this = _super.call(this) || this;
-
-    _this._id = null;
-    _this._lastServerId = null; // States.
-
-    _this._destroyed = false; // Connections have been killed
-
-    _this._disconnected = false; // Connection to PeerServer killed but P2P connections still active
-
-    _this._open = false; // Sockets and such are not yet open.
-
-    _this._connections = new Map(); // All connections for this peer.
-
-    _this._lostMessages = new Map(); // src => [list of messages]
-
-    var userId; // Deal with overloading
-
-    if (id && id.constructor == Object) {
-      options = id;
-    } else if (id) {
-      userId = id.toString();
-    } // Configurize options
-
-
-    options = __assign({
-      debug: 0,
-      host: util_1.util.CLOUD_HOST,
-      port: util_1.util.CLOUD_PORT,
-      path: "/",
-      key: Peer.DEFAULT_KEY,
-      token: util_1.util.randomToken(),
-      config: util_1.util.defaultConfig
-    }, options);
-    _this._options = options; // Detect relative URL host.
-
-    if (_this._options.host === "/") {
-      _this._options.host = window.location.hostname;
-    } // Set path correctly.
-
-
-    if (_this._options.path) {
-      if (_this._options.path[0] !== "/") {
-        _this._options.path = "/" + _this._options.path;
-      }
-
-      if (_this._options.path[_this._options.path.length - 1] !== "/") {
-        _this._options.path += "/";
-      }
-    } // Set whether we use SSL to same as current host
-
-
-    if (_this._options.secure === undefined && _this._options.host !== util_1.util.CLOUD_HOST) {
-      _this._options.secure = util_1.util.isSecure();
-    } else if (_this._options.host == util_1.util.CLOUD_HOST) {
-      _this._options.secure = true;
-    } // Set a custom log function if present
-
-
-    if (_this._options.logFunction) {
-      logger_1.default.setLogFunction(_this._options.logFunction);
-    }
-
-    logger_1.default.logLevel = _this._options.debug || 0;
-    _this._api = new api_1.API(options);
-    _this._socket = _this._createServerConnection(); // Sanity checks
-    // Ensure WebRTC supported
-
-    if (!util_1.util.supports.audioVideo && !util_1.util.supports.data) {
-      _this._delayedAbort(enums_1.PeerErrorType.BrowserIncompatible, "The current browser does not support WebRTC");
-
-      return _this;
-    } // Ensure alphanumeric id
-
-
-    if (!!userId && !util_1.util.validateId(userId)) {
-      _this._delayedAbort(enums_1.PeerErrorType.InvalidID, "ID \"" + userId + "\" is invalid");
-
-      return _this;
-    }
-
-    if (userId) {
-      _this._initialize(userId);
-    } else {
-      _this._api.retrieveId().then(function (id) {
-        return _this._initialize(id);
-      }).catch(function (error) {
-        return _this._abort(enums_1.PeerErrorType.ServerError, error);
-      });
-    }
-
-    return _this;
-  }
-
-  Object.defineProperty(Peer.prototype, "id", {
-    get: function get() {
-      return this._id;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "options", {
-    get: function get() {
-      return this._options;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "open", {
-    get: function get() {
-      return this._open;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "socket", {
-    get: function get() {
-      return this._socket;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "connections", {
-    /**
-     * @deprecated
-     * Return type will change from Object to Map<string,[]>
-     */
-    get: function get() {
-      var e_1, _a;
-
-      var plainConnections = Object.create(null);
-
-      try {
-        for (var _b = __values(this._connections), _c = _b.next(); !_c.done; _c = _b.next()) {
-          var _d = __read(_c.value, 2),
-              k = _d[0],
-              v = _d[1];
-
-          plainConnections[k] = v;
-        }
-      } catch (e_1_1) {
-        e_1 = {
-          error: e_1_1
-        };
-      } finally {
-        try {
-          if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
-        } finally {
-          if (e_1) throw e_1.error;
-        }
-      }
-
-      return plainConnections;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "destroyed", {
-    get: function get() {
-      return this._destroyed;
-    },
-    enumerable: false,
-    configurable: true
-  });
-  Object.defineProperty(Peer.prototype, "disconnected", {
-    get: function get() {
-      return this._disconnected;
-    },
-    enumerable: false,
-    configurable: true
-  });
-
-  Peer.prototype._createServerConnection = function () {
-    var _this = this;
-
-    var socket = new socket_1.Socket(this._options.secure, this._options.host, this._options.port, this._options.path, this._options.key, this._options.pingInterval);
-    socket.on(enums_1.SocketEventType.Message, function (data) {
-      _this._handleMessage(data);
-    });
-    socket.on(enums_1.SocketEventType.Error, function (error) {
-      _this._abort(enums_1.PeerErrorType.SocketError, error);
-    });
-    socket.on(enums_1.SocketEventType.Disconnected, function () {
-      if (_this.disconnected) {
-        return;
-      }
-
-      _this.emitError(enums_1.PeerErrorType.Network, "Lost connection to server.");
-
-      _this.disconnect();
-    });
-    socket.on(enums_1.SocketEventType.Close, function () {
-      if (_this.disconnected) {
-        return;
-      }
-
-      _this._abort(enums_1.PeerErrorType.SocketClosed, "Underlying socket is already closed.");
-    });
-    return socket;
-  };
-  /** Initialize a connection with the server. */
-
-
-  Peer.prototype._initialize = function (id) {
-    this._id = id;
-    this.socket.start(id, this._options.token);
-  };
-  /** Handles messages from the server. */
-
-
-  Peer.prototype._handleMessage = function (message) {
-    var e_2, _a;
-
-    var type = message.type;
-    var payload = message.payload;
-    var peerId = message.src;
-
-    switch (type) {
-      case enums_1.ServerMessageType.Open:
-        // The connection to the server is open.
-        this._lastServerId = this.id;
-        this._open = true;
-        this.emit(enums_1.PeerEventType.Open, this.id);
-        break;
-
-      case enums_1.ServerMessageType.Error:
-        // Server error.
-        this._abort(enums_1.PeerErrorType.ServerError, payload.msg);
-
-        break;
-
-      case enums_1.ServerMessageType.IdTaken:
-        // The selected ID is taken.
-        this._abort(enums_1.PeerErrorType.UnavailableID, "ID \"" + this.id + "\" is taken");
-
-        break;
-
-      case enums_1.ServerMessageType.InvalidKey:
-        // The given API key cannot be found.
-        this._abort(enums_1.PeerErrorType.InvalidKey, "API KEY \"" + this._options.key + "\" is invalid");
-
-        break;
-
-      case enums_1.ServerMessageType.Leave:
-        // Another peer has closed its connection to this peer.
-        logger_1.default.log("Received leave message from " + peerId);
-
-        this._cleanupPeer(peerId);
-
-        this._connections.delete(peerId);
-
-        break;
-
-      case enums_1.ServerMessageType.Expire:
-        // The offer sent to a peer has expired without response.
-        this.emitError(enums_1.PeerErrorType.PeerUnavailable, "Could not connect to peer " + peerId);
-        break;
-
-      case enums_1.ServerMessageType.Offer:
-        {
-          // we should consider switching this to CALL/CONNECT, but this is the least breaking option.
-          var connectionId = payload.connectionId;
-          var connection = this.getConnection(peerId, connectionId);
-
-          if (connection) {
-            connection.close();
-            logger_1.default.warn("Offer received for existing Connection ID:" + connectionId);
-          } // Create a new connection.
-
-
-          if (payload.type === enums_1.ConnectionType.Media) {
-            connection = new mediaconnection_1.MediaConnection(peerId, this, {
-              connectionId: connectionId,
-              _payload: payload,
-              metadata: payload.metadata
-            });
-
-            this._addConnection(peerId, connection);
-
-            this.emit(enums_1.PeerEventType.Call, connection);
-          } else if (payload.type === enums_1.ConnectionType.Data) {
-            connection = new dataconnection_1.DataConnection(peerId, this, {
-              connectionId: connectionId,
-              _payload: payload,
-              metadata: payload.metadata,
-              label: payload.label,
-              serialization: payload.serialization,
-              reliable: payload.reliable
-            });
-
-            this._addConnection(peerId, connection);
-
-            this.emit(enums_1.PeerEventType.Connection, connection);
-          } else {
-            logger_1.default.warn("Received malformed connection type:" + payload.type);
-            return;
-          } // Find messages.
-
-
-          var messages = this._getMessages(connectionId);
-
-          try {
-            for (var messages_1 = __values(messages), messages_1_1 = messages_1.next(); !messages_1_1.done; messages_1_1 = messages_1.next()) {
-              var message_1 = messages_1_1.value;
-              connection.handleMessage(message_1);
-            }
-          } catch (e_2_1) {
-            e_2 = {
-              error: e_2_1
-            };
-          } finally {
-            try {
-              if (messages_1_1 && !messages_1_1.done && (_a = messages_1.return)) _a.call(messages_1);
-            } finally {
-              if (e_2) throw e_2.error;
-            }
-          }
-
-          break;
-        }
-
-      default:
-        {
-          if (!payload) {
-            logger_1.default.warn("You received a malformed message from " + peerId + " of type " + type);
-            return;
-          }
-
-          var connectionId = payload.connectionId;
-          var connection = this.getConnection(peerId, connectionId);
-
-          if (connection && connection.peerConnection) {
-            // Pass it on.
-            connection.handleMessage(message);
-          } else if (connectionId) {
-            // Store for possible later use
-            this._storeMessage(connectionId, message);
-          } else {
-            logger_1.default.warn("You received an unrecognized message:", message);
-          }
-
-          break;
-        }
-    }
-  };
-  /** Stores messages without a set up connection, to be claimed later. */
-
-
-  Peer.prototype._storeMessage = function (connectionId, message) {
-    if (!this._lostMessages.has(connectionId)) {
-      this._lostMessages.set(connectionId, []);
-    }
-
-    this._lostMessages.get(connectionId).push(message);
-  };
-  /** Retrieve messages from lost message store */
-  //TODO Change it to private
-
-
-  Peer.prototype._getMessages = function (connectionId) {
-    var messages = this._lostMessages.get(connectionId);
-
-    if (messages) {
-      this._lostMessages.delete(connectionId);
-
-      return messages;
-    }
-
-    return [];
-  };
-  /**
-   * Returns a DataConnection to the specified peer. See documentation for a
-   * complete list of options.
-   */
-
-
-  Peer.prototype.connect = function (peer, options) {
-    if (options === void 0) {
-      options = {};
-    }
-
-    if (this.disconnected) {
-      logger_1.default.warn("You cannot connect to a new Peer because you called " + ".disconnect() on this Peer and ended your connection with the " + "server. You can create a new Peer to reconnect, or call reconnect " + "on this peer if you believe its ID to still be available.");
-      this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
-      return;
-    }
-
-    var dataConnection = new dataconnection_1.DataConnection(peer, this, options);
-
-    this._addConnection(peer, dataConnection);
-
-    return dataConnection;
-  };
-  /**
-   * Returns a MediaConnection to the specified peer. See documentation for a
-   * complete list of options.
-   */
-
-
-  Peer.prototype.call = function (peer, stream, options) {
-    if (options === void 0) {
-      options = {};
-    }
-
-    if (this.disconnected) {
-      logger_1.default.warn("You cannot connect to a new Peer because you called " + ".disconnect() on this Peer and ended your connection with the " + "server. You can create a new Peer to reconnect.");
-      this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
-      return;
-    }
-
-    if (!stream) {
-      logger_1.default.error("To call a peer, you must provide a stream from your browser's `getUserMedia`.");
-      return;
-    }
-
-    options._stream = stream;
-    var mediaConnection = new mediaconnection_1.MediaConnection(peer, this, options);
-
-    this._addConnection(peer, mediaConnection);
-
-    return mediaConnection;
-  };
-  /** Add a data/media connection to this peer. */
-
-
-  Peer.prototype._addConnection = function (peerId, connection) {
-    logger_1.default.log("add connection " + connection.type + ":" + connection.connectionId + " to peerId:" + peerId);
-
-    if (!this._connections.has(peerId)) {
-      this._connections.set(peerId, []);
-    }
-
-    this._connections.get(peerId).push(connection);
-  }; //TODO should be private
-
-
-  Peer.prototype._removeConnection = function (connection) {
-    var connections = this._connections.get(connection.peer);
-
-    if (connections) {
-      var index = connections.indexOf(connection);
-
-      if (index !== -1) {
-        connections.splice(index, 1);
-      }
-    } //remove from lost messages
-
-
-    this._lostMessages.delete(connection.connectionId);
-  };
-  /** Retrieve a data/media connection for this peer. */
-
-
-  Peer.prototype.getConnection = function (peerId, connectionId) {
-    var e_3, _a;
-
-    var connections = this._connections.get(peerId);
-
-    if (!connections) {
-      return null;
-    }
-
-    try {
-      for (var connections_1 = __values(connections), connections_1_1 = connections_1.next(); !connections_1_1.done; connections_1_1 = connections_1.next()) {
-        var connection = connections_1_1.value;
-
-        if (connection.connectionId === connectionId) {
-          return connection;
-        }
-      }
-    } catch (e_3_1) {
-      e_3 = {
-        error: e_3_1
-      };
-    } finally {
-      try {
-        if (connections_1_1 && !connections_1_1.done && (_a = connections_1.return)) _a.call(connections_1);
-      } finally {
-        if (e_3) throw e_3.error;
-      }
-    }
-
-    return null;
-  };
-
-  Peer.prototype._delayedAbort = function (type, message) {
-    var _this = this;
-
-    setTimeout(function () {
-      _this._abort(type, message);
-    }, 0);
-  };
-  /**
-   * Emits an error message and destroys the Peer.
-   * The Peer is not destroyed if it's in a disconnected state, in which case
-   * it retains its disconnected state and its existing connections.
-   */
-
-
-  Peer.prototype._abort = function (type, message) {
-    logger_1.default.error("Aborting!");
-    this.emitError(type, message);
-
-    if (!this._lastServerId) {
-      this.destroy();
-    } else {
-      this.disconnect();
-    }
-  };
-  /** Emits a typed error message. */
-
-
-  Peer.prototype.emitError = function (type, err) {
-    logger_1.default.error("Error:", err);
-    var error;
-
-    if (typeof err === "string") {
-      error = new Error(err);
-    } else {
-      error = err;
-    }
-
-    error.type = type;
-    this.emit(enums_1.PeerEventType.Error, error);
-  };
-  /**
-   * Destroys the Peer: closes all active connections as well as the connection
-   *  to the server.
-   * Warning: The peer can no longer create or accept connections after being
-   *  destroyed.
-   */
-
-
-  Peer.prototype.destroy = function () {
-    if (this.destroyed) {
-      return;
-    }
-
-    logger_1.default.log("Destroy peer with ID:" + this.id);
-    this.disconnect();
-
-    this._cleanup();
-
-    this._destroyed = true;
-    this.emit(enums_1.PeerEventType.Close);
-  };
-  /** Disconnects every connection on this peer. */
-
-
-  Peer.prototype._cleanup = function () {
-    var e_4, _a;
-
-    try {
-      for (var _b = __values(this._connections.keys()), _c = _b.next(); !_c.done; _c = _b.next()) {
-        var peerId = _c.value;
-
-        this._cleanupPeer(peerId);
-
-        this._connections.delete(peerId);
-      }
-    } catch (e_4_1) {
-      e_4 = {
-        error: e_4_1
-      };
-    } finally {
-      try {
-        if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
-      } finally {
-        if (e_4) throw e_4.error;
-      }
-    }
-
-    this.socket.removeAllListeners();
-  };
-  /** Closes all connections to this peer. */
-
-
-  Peer.prototype._cleanupPeer = function (peerId) {
-    var e_5, _a;
-
-    var connections = this._connections.get(peerId);
-
-    if (!connections) return;
-
-    try {
-      for (var connections_2 = __values(connections), connections_2_1 = connections_2.next(); !connections_2_1.done; connections_2_1 = connections_2.next()) {
-        var connection = connections_2_1.value;
-        connection.close();
-      }
-    } catch (e_5_1) {
-      e_5 = {
-        error: e_5_1
-      };
-    } finally {
-      try {
-        if (connections_2_1 && !connections_2_1.done && (_a = connections_2.return)) _a.call(connections_2);
-      } finally {
-        if (e_5) throw e_5.error;
-      }
-    }
-  };
-  /**
-   * Disconnects the Peer's connection to the PeerServer. Does not close any
-   *  active connections.
-   * Warning: The peer can no longer create or accept connections after being
-   *  disconnected. It also cannot reconnect to the server.
-   */
-
-
-  Peer.prototype.disconnect = function () {
-    if (this.disconnected) {
-      return;
-    }
-
-    var currentId = this.id;
-    logger_1.default.log("Disconnect peer with ID:" + currentId);
-    this._disconnected = true;
-    this._open = false;
-    this.socket.close();
-    this._lastServerId = currentId;
-    this._id = null;
-    this.emit(enums_1.PeerEventType.Disconnected, currentId);
-  };
-  /** Attempts to reconnect with the same ID. */
-
-
-  Peer.prototype.reconnect = function () {
-    if (this.disconnected && !this.destroyed) {
-      logger_1.default.log("Attempting reconnection to server with ID " + this._lastServerId);
-      this._disconnected = false;
-
-      this._initialize(this._lastServerId);
-    } else if (this.destroyed) {
-      throw new Error("This peer cannot reconnect to the server. It has already been destroyed.");
-    } else if (!this.disconnected && !this.open) {
-      // Do nothing. We're still connecting the first time.
-      logger_1.default.error("In a hurry? We're still trying to make the initial connection!");
-    } else {
-      throw new Error("Peer " + this.id + " cannot reconnect because it is not disconnected from the server!");
-    }
-  };
-  /**
-   * Get a list of available peer IDs. If you're running your own server, you'll
-   * want to set allow_discovery: true in the PeerServer options. If you're using
-   * the cloud server, email team@peerjs.com to get the functionality enabled for
-   * your key.
-   */
-
-
-  Peer.prototype.listAllPeers = function (cb) {
-    var _this = this;
-
-    if (cb === void 0) {
-      cb = function cb(_) {};
-    }
-
-    this._api.listAllPeers().then(function (peers) {
-      return cb(peers);
-    }).catch(function (error) {
-      return _this._abort(enums_1.PeerErrorType.ServerError, error);
-    });
-  };
-
-  Peer.DEFAULT_KEY = "peerjs";
-  return Peer;
-}(eventemitter3_1.EventEmitter);
-
-exports.Peer = Peer;
-},{"eventemitter3":"JJlS","./util":"BHXf","./logger":"WOs9","./socket":"wJlv","./mediaconnection":"dbHP","./dataconnection":"GBTQ","./enums":"ZRYf","./api":"in7L"}],"iTK6":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
-  value: true
-});
-exports.peerjs = void 0;
-
-var util_1 = require("./util");
-
-var peer_1 = require("./peer");
-
-exports.peerjs = {
-  Peer: peer_1.Peer,
-  util: util_1.util
-};
-exports.default = peer_1.Peer;
-window.peerjs = exports.peerjs;
-/** @deprecated Should use peerjs namespace */
-
-window.Peer = peer_1.Peer;
-},{"./util":"BHXf","./peer":"Hxpd"}]},{},["iTK6"], null)
-//# sourceMappingURL=/peerjs.js.map