1 | 'use strict';
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2 |
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3 | var $ = require('../internals/export');
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4 | var DESCRIPTORS = require('../internals/descriptors');
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5 | var getBuiltIn = require('../internals/get-built-in');
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6 | var aCallable = require('../internals/a-callable');
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7 | var anInstance = require('../internals/an-instance');
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8 | var defineBuiltIn = require('../internals/define-built-in');
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9 | var defineBuiltIns = require('../internals/define-built-ins');
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10 | var defineBuiltInAccessor = require('../internals/define-built-in-accessor');
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11 | var wellKnownSymbol = require('../internals/well-known-symbol');
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12 | var InternalStateModule = require('../internals/internal-state');
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13 | var addDisposableResource = require('../internals/add-disposable-resource');
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14 |
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15 | var Promise = getBuiltIn('Promise');
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16 | var SuppressedError = getBuiltIn('SuppressedError');
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17 | var $ReferenceError = ReferenceError;
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18 |
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19 | var ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');
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20 | var TO_STRING_TAG = wellKnownSymbol('toStringTag');
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21 |
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22 | var ASYNC_DISPOSABLE_STACK = 'AsyncDisposableStack';
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23 | var setInternalState = InternalStateModule.set;
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24 | var getAsyncDisposableStackInternalState = InternalStateModule.getterFor(ASYNC_DISPOSABLE_STACK);
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25 |
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26 | var HINT = 'async-dispose';
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27 | var DISPOSED = 'disposed';
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28 | var PENDING = 'pending';
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29 |
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30 | var getPendingAsyncDisposableStackInternalState = function (stack) {
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31 | var internalState = getAsyncDisposableStackInternalState(stack);
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32 | if (internalState.state === DISPOSED) throw new $ReferenceError(ASYNC_DISPOSABLE_STACK + ' already disposed');
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33 | return internalState;
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34 | };
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35 |
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36 | var $AsyncDisposableStack = function AsyncDisposableStack() {
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37 | setInternalState(anInstance(this, AsyncDisposableStackPrototype), {
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38 | type: ASYNC_DISPOSABLE_STACK,
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39 | state: PENDING,
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40 | stack: []
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41 | });
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42 |
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43 | if (!DESCRIPTORS) this.disposed = false;
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44 | };
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45 |
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46 | var AsyncDisposableStackPrototype = $AsyncDisposableStack.prototype;
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47 |
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48 | defineBuiltIns(AsyncDisposableStackPrototype, {
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49 | disposeAsync: function disposeAsync() {
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50 | var asyncDisposableStack = this;
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51 | return new Promise(function (resolve, reject) {
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52 | var internalState = getAsyncDisposableStackInternalState(asyncDisposableStack);
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53 | if (internalState.state === DISPOSED) return resolve(undefined);
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54 | internalState.state = DISPOSED;
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55 | if (!DESCRIPTORS) asyncDisposableStack.disposed = true;
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56 | var stack = internalState.stack;
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57 | var i = stack.length;
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58 | var thrown = false;
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59 | var suppressed;
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60 |
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61 | var handleError = function (result) {
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62 | if (thrown) {
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63 | suppressed = new SuppressedError(result, suppressed);
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64 | } else {
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65 | thrown = true;
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66 | suppressed = result;
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67 | }
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68 |
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69 | loop();
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70 | };
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71 |
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72 | var loop = function () {
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73 | if (i) {
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74 | var disposeMethod = stack[--i];
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75 | stack[i] = undefined;
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76 | try {
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77 | Promise.resolve(disposeMethod()).then(loop, handleError);
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78 | } catch (error) {
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79 | handleError(error);
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80 | }
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81 | } else {
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82 | internalState.stack = undefined;
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83 | thrown ? reject(suppressed) : resolve(undefined);
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84 | }
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85 | };
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86 |
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87 | loop();
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88 | });
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89 | },
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90 | use: function use(value) {
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91 | addDisposableResource(getPendingAsyncDisposableStackInternalState(this), value, HINT);
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92 | return value;
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93 | },
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94 | adopt: function adopt(value, onDispose) {
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95 | var internalState = getPendingAsyncDisposableStackInternalState(this);
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96 | aCallable(onDispose);
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97 | addDisposableResource(internalState, undefined, HINT, function () {
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98 | return onDispose(value);
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99 | });
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100 | return value;
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101 | },
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102 | defer: function defer(onDispose) {
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103 | var internalState = getPendingAsyncDisposableStackInternalState(this);
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104 | aCallable(onDispose);
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105 | addDisposableResource(internalState, undefined, HINT, onDispose);
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106 | },
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107 | move: function move() {
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108 | var internalState = getPendingAsyncDisposableStackInternalState(this);
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109 | var newAsyncDisposableStack = new $AsyncDisposableStack();
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110 | getAsyncDisposableStackInternalState(newAsyncDisposableStack).stack = internalState.stack;
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111 | internalState.stack = [];
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112 | internalState.state = DISPOSED;
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113 | if (!DESCRIPTORS) this.disposed = true;
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114 | return newAsyncDisposableStack;
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115 | }
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116 | });
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117 |
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118 | if (DESCRIPTORS) defineBuiltInAccessor(AsyncDisposableStackPrototype, 'disposed', {
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119 | configurable: true,
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120 | get: function disposed() {
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121 | return getAsyncDisposableStackInternalState(this).state === DISPOSED;
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122 | }
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123 | });
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124 |
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125 | defineBuiltIn(AsyncDisposableStackPrototype, ASYNC_DISPOSE, AsyncDisposableStackPrototype.disposeAsync, { name: 'disposeAsync' });
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126 | defineBuiltIn(AsyncDisposableStackPrototype, TO_STRING_TAG, ASYNC_DISPOSABLE_STACK, { nonWritable: true });
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127 |
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128 | $({ global: true, constructor: true }, {
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129 | AsyncDisposableStack: $AsyncDisposableStack
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130 | });
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