27 lines
758 B
Plaintext
27 lines
758 B
Plaintext
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'use strict';
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var ArraySpeciesCreate = require('es-abstract/2023/ArraySpeciesCreate');
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var FlattenIntoArray = require('es-abstract/2023/FlattenIntoArray');
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var Get = require('es-abstract/2023/Get');
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var IsCallable = require('es-abstract/2023/IsCallable');
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var ToLength = require('es-abstract/2023/ToLength');
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var ToObject = require('es-abstract/2023/ToObject');
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module.exports = function flatMap(mapperFunction) {
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var O = ToObject(this);
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var sourceLen = ToLength(Get(O, 'length'));
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if (!IsCallable(mapperFunction)) {
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throw new TypeError('mapperFunction must be a function');
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}
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var T;
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if (arguments.length > 1) {
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T = arguments[1];
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}
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var A = ArraySpeciesCreate(O, 0);
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FlattenIntoArray(A, O, sourceLen, 0, 1, mapperFunction, T);
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return A;
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};
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