22 lines
680 B
JavaScript
22 lines
680 B
JavaScript
"use strict";
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var isPlainArray = require("../../is-plain-array")
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, callable = require("../../../object/valid-callable")
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, isArray = Array.isArray
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, map = Array.prototype.map
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, forEach = Array.prototype.forEach
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, call = Function.prototype.call;
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module.exports = function (callbackFn/*, thisArg*/) {
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var result, thisArg;
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if (!this || !isArray(this) || isPlainArray(this)) {
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return map.apply(this, arguments);
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}
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callable(callbackFn);
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thisArg = arguments[1];
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result = new this.constructor(this.length);
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forEach.call(this, function (val, i, self) {
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result[i] = call.call(callbackFn, thisArg, val, i, self);
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});
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return result;
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};
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