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27 lines
1012 B
27 lines
1012 B
2 years ago
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'use strict';
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// https://github.com/tc39/proposal-async-explicit-resource-management
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var call = require('../internals/function-call');
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var defineBuiltIn = require('../internals/define-built-in');
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var getBuiltIn = require('../internals/get-built-in');
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var getMethod = require('../internals/get-method');
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var hasOwn = require('../internals/has-own-property');
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var wellKnownSymbol = require('../internals/well-known-symbol');
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var AsyncIteratorPrototype = require('../internals/async-iterator-prototype');
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var ASYNC_DISPOSE = wellKnownSymbol('asyncDispose');
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var Promise = getBuiltIn('Promise');
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if (!hasOwn(AsyncIteratorPrototype, ASYNC_DISPOSE)) {
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defineBuiltIn(AsyncIteratorPrototype, ASYNC_DISPOSE, function () {
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var O = this;
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return new Promise(function (resolve, reject) {
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var $return = getMethod(O, 'return');
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if ($return) {
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Promise.resolve(call($return, O)).then(function () {
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resolve(undefined);
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}, reject);
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} else resolve(undefined);
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});
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});
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}
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