27 lines
1.1 KiB
JavaScript
27 lines
1.1 KiB
JavaScript
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'use strict';
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var $ = require('../internals/export');
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var IS_PURE = require('../internals/is-pure');
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var FORCED_PROMISE_CONSTRUCTOR = require('../internals/promise-constructor-detection').CONSTRUCTOR;
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var NativePromiseConstructor = require('../internals/promise-native-constructor');
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var getBuiltIn = require('../internals/get-built-in');
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var isCallable = require('../internals/is-callable');
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var defineBuiltIn = require('../internals/define-built-in');
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var NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;
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// `Promise.prototype.catch` method
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// https://tc39.es/ecma262/#sec-promise.prototype.catch
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$({ target: 'Promise', proto: true, forced: FORCED_PROMISE_CONSTRUCTOR, real: true }, {
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'catch': function (onRejected) {
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return this.then(undefined, onRejected);
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}
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});
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// makes sure that native promise-based APIs `Promise#catch` properly works with patched `Promise#then`
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if (!IS_PURE && isCallable(NativePromiseConstructor)) {
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var method = getBuiltIn('Promise').prototype['catch'];
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if (NativePromisePrototype['catch'] !== method) {
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defineBuiltIn(NativePromisePrototype, 'catch', method, { unsafe: true });
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}
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}
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