main
Last change
on this file was d24f17c, checked in by Aleksandar Panovski <apano77@…>, 15 months ago |
Initial commit
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File size:
877 bytes
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[d24f17c] | 1 | import { bind } from 'ramda';
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| 2 |
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| 3 | import isIterable from '../../isIterable';
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| 4 | import isNotUndefined from '../../isNotUndefined';
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| 5 | import isNotNil from '../../isNotNil';
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| 6 | import isNotFunction from '../../isNotFunction';
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| 7 |
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| 8 | const copyArray = (items, mapFn, thisArg) => {
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| 9 | const boundMapFn = isNotUndefined(thisArg) ? bind(mapFn, thisArg) : mapFn;
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| 10 |
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| 11 | return isNotUndefined(mapFn) ? [...items].map(boundMapFn) : [...items];
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| 12 | };
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| 13 |
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| 14 | const fromArray = (items, mapFn, thisArg) => {
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| 15 | if (items == null) {
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| 16 | throw new TypeError(
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| 17 | 'Array.from requires an array-like object - not null or undefined'
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| 18 | );
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| 19 | }
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| 20 |
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| 21 | if (isNotNil(mapFn) && isNotFunction(mapFn)) {
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| 22 | throw new TypeError(
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| 23 | 'Array.from: when provided, the second argument must be a function'
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| 24 | );
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| 25 | }
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| 26 |
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| 27 | if (isIterable(items)) {
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| 28 | return copyArray(items, mapFn, thisArg);
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| 29 | }
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| 30 |
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| 31 | return [];
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| 32 | };
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| 33 |
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| 34 | export default fromArray;
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