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deps/v8/test/mjsunit/es6/array-concat-spreadable-function.js
21 строка
749 B
Michaël Zasso
deps: update V8 to 11.3.244.4
31 мар 2023, 17:15
31 мар 2023, 17:15
f226350
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// Copyright 2014 the V8 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. "use strict"; var fn = function(a, b, c) {} // Functions are not concat-spreadable by default assertEquals([fn], [].concat(fn)); // Functions may be individually concat-spreadable fn[Symbol.isConcatSpreadable] = true; fn[0] = 1, fn[1] = 2, fn[2] = 3; assertEquals([1, 2, 3], [].concat(fn)); Function.prototype[Symbol.isConcatSpreadable] = true; // Functions may be concat-spreadable assertEquals(new Array(3), [].concat(function(a,b,c) {})); Function.prototype[0] = 1; Function.prototype[1] = 2; Function.prototype[2] = 3; assertEquals([1,2,3], [].concat(function(a, b, c) {}));