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19 lines
758 B
19 lines
758 B
4 weeks ago
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'use strict';
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var lengthOfArrayLike = require('../internals/length-of-array-like');
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var toIntegerOrInfinity = require('../internals/to-integer-or-infinity');
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var $RangeError = RangeError;
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// https://tc39.es/proposal-change-array-by-copy/#sec-array.prototype.with
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// https://tc39.es/proposal-change-array-by-copy/#sec-%typedarray%.prototype.with
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module.exports = function (O, C, index, value) {
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var len = lengthOfArrayLike(O);
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var relativeIndex = toIntegerOrInfinity(index);
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var actualIndex = relativeIndex < 0 ? len + relativeIndex : relativeIndex;
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if (actualIndex >= len || actualIndex < 0) throw new $RangeError('Incorrect index');
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var A = new C(len);
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var k = 0;
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for (; k < len; k++) A[k] = k === actualIndex ? value : O[k];
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return A;
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};
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