1 | 'use strict';
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2 |
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3 | Object.defineProperty(exports, '__esModule', { value: true });
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4 |
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5 | var classCallCheck = function (instance, Constructor) {
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6 | if (!(instance instanceof Constructor)) {
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7 | throw new TypeError("Cannot call a class as a function");
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8 | }
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9 | };
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10 |
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11 | var createClass = function () {
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12 | function defineProperties(target, props) {
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13 | for (var i = 0; i < props.length; i++) {
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14 | var descriptor = props[i];
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15 | descriptor.enumerable = descriptor.enumerable || false;
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16 | descriptor.configurable = true;
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17 | if ("value" in descriptor) descriptor.writable = true;
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18 | Object.defineProperty(target, descriptor.key, descriptor);
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19 | }
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20 | }
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21 |
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22 | return function (Constructor, protoProps, staticProps) {
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23 | if (protoProps) defineProperties(Constructor.prototype, protoProps);
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24 | if (staticProps) defineProperties(Constructor, staticProps);
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25 | return Constructor;
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26 | };
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27 | }();
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28 |
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29 | var get = function get(object, property, receiver) {
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30 | if (object === null) object = Function.prototype;
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31 | var desc = Object.getOwnPropertyDescriptor(object, property);
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32 |
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33 | if (desc === undefined) {
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34 | var parent = Object.getPrototypeOf(object);
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35 |
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36 | if (parent === null) {
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37 | return undefined;
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38 | } else {
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39 | return get(parent, property, receiver);
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40 | }
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41 | } else if ("value" in desc) {
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42 | return desc.value;
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43 | } else {
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44 | var getter = desc.get;
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45 |
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46 | if (getter === undefined) {
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47 | return undefined;
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48 | }
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49 |
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50 | return getter.call(receiver);
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51 | }
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52 | };
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53 |
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54 | var inherits = function (subClass, superClass) {
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55 | if (typeof superClass !== "function" && superClass !== null) {
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56 | throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
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57 | }
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58 |
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59 | subClass.prototype = Object.create(superClass && superClass.prototype, {
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60 | constructor: {
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61 | value: subClass,
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62 | enumerable: false,
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63 | writable: true,
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64 | configurable: true
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65 | }
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66 | });
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67 | if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
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68 | };
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69 |
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70 | var possibleConstructorReturn = function (self, call) {
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71 | if (!self) {
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72 | throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
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73 | }
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74 |
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75 | return call && (typeof call === "object" || typeof call === "function") ? call : self;
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76 | };
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77 |
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78 | var Emitter = function () {
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79 | function Emitter() {
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80 | classCallCheck(this, Emitter);
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81 |
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82 | this.listeners = {};
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83 | }
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84 |
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85 | createClass(Emitter, [{
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86 | key: 'addEventListener',
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87 | value: function addEventListener(type, callback) {
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88 | if (!(type in this.listeners)) {
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89 | this.listeners[type] = [];
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90 | }
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91 | this.listeners[type].push(callback);
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92 | }
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93 | }, {
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94 | key: 'removeEventListener',
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95 | value: function removeEventListener(type, callback) {
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96 | if (!(type in this.listeners)) {
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97 | return;
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98 | }
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99 | var stack = this.listeners[type];
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100 | for (var i = 0, l = stack.length; i < l; i++) {
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101 | if (stack[i] === callback) {
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102 | stack.splice(i, 1);
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103 | return;
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104 | }
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105 | }
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106 | }
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107 | }, {
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108 | key: 'dispatchEvent',
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109 | value: function dispatchEvent(event) {
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110 | var _this = this;
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111 |
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112 | if (!(event.type in this.listeners)) {
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113 | return;
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114 | }
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115 | var debounce = function debounce(callback) {
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116 | setTimeout(function () {
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117 | return callback.call(_this, event);
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118 | });
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119 | };
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120 | var stack = this.listeners[event.type];
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121 | for (var i = 0, l = stack.length; i < l; i++) {
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122 | debounce(stack[i]);
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123 | }
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124 | return !event.defaultPrevented;
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125 | }
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126 | }]);
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127 | return Emitter;
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128 | }();
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129 |
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130 | var AbortSignal = function (_Emitter) {
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131 | inherits(AbortSignal, _Emitter);
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132 |
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133 | function AbortSignal() {
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134 | classCallCheck(this, AbortSignal);
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135 |
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136 | var _this2 = possibleConstructorReturn(this, (AbortSignal.__proto__ || Object.getPrototypeOf(AbortSignal)).call(this));
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137 |
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138 | _this2.aborted = false;
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139 | _this2.onabort = null;
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140 | return _this2;
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141 | }
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142 |
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143 | createClass(AbortSignal, [{
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144 | key: 'toString',
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145 | value: function toString() {
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146 | return '[object AbortSignal]';
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147 | }
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148 | }, {
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149 | key: 'dispatchEvent',
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150 | value: function dispatchEvent(event) {
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151 | if (event.type === 'abort') {
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152 | this.aborted = true;
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153 | if (typeof this.onabort === 'function') {
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154 | this.onabort.call(this, event);
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155 | }
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156 | }
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157 |
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158 | get(AbortSignal.prototype.__proto__ || Object.getPrototypeOf(AbortSignal.prototype), 'dispatchEvent', this).call(this, event);
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159 | }
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160 | }]);
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161 | return AbortSignal;
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162 | }(Emitter);
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163 |
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164 | var AbortController = function () {
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165 | function AbortController() {
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166 | classCallCheck(this, AbortController);
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167 |
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168 | this.signal = new AbortSignal();
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169 | }
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170 |
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171 | createClass(AbortController, [{
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172 | key: 'abort',
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173 | value: function abort() {
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174 | var event = void 0;
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175 | try {
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176 | event = new Event('abort');
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177 | } catch (e) {
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178 | if (typeof document !== 'undefined') {
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179 | if (!document.createEvent) {
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180 |
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181 | event = document.createEventObject();
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182 | event.type = 'abort';
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183 | } else {
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184 |
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185 | event = document.createEvent('Event');
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186 | event.initEvent('abort', false, false);
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187 | }
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188 | } else {
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189 |
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190 | event = {
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191 | type: 'abort',
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192 | bubbles: false,
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193 | cancelable: false
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194 | };
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195 | }
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196 | }
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197 | this.signal.dispatchEvent(event);
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198 | }
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199 | }, {
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200 | key: 'toString',
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201 | value: function toString() {
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202 | return '[object AbortController]';
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203 | }
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204 | }]);
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205 | return AbortController;
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206 | }();
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207 |
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208 | if (typeof Symbol !== 'undefined' && Symbol.toStringTag) {
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209 |
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210 |
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211 | AbortController.prototype[Symbol.toStringTag] = 'AbortController';
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212 | AbortSignal.prototype[Symbol.toStringTag] = 'AbortSignal';
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213 | }
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214 |
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215 | exports.AbortSignal = AbortSignal;
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216 | exports.AbortController = AbortController;
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217 | exports.default = AbortController;
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