Last change
on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
1023 bytes
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[6a3a178] | 1 | 'use strict';
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| 2 |
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| 3 | /**
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| 4 | * Module dependenices
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| 5 | */
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| 6 |
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| 7 | const clone = require('shallow-clone');
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| 8 | const typeOf = require('kind-of');
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| 9 | const isPlainObject = require('is-plain-object');
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| 10 |
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| 11 | function cloneDeep(val, instanceClone) {
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| 12 | switch (typeOf(val)) {
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| 13 | case 'object':
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| 14 | return cloneObjectDeep(val, instanceClone);
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| 15 | case 'array':
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| 16 | return cloneArrayDeep(val, instanceClone);
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| 17 | default: {
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| 18 | return clone(val);
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| 19 | }
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| 20 | }
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| 21 | }
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| 22 |
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| 23 | function cloneObjectDeep(val, instanceClone) {
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| 24 | if (typeof instanceClone === 'function') {
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| 25 | return instanceClone(val);
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| 26 | }
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| 27 | if (instanceClone || isPlainObject(val)) {
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| 28 | const res = new val.constructor();
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| 29 | for (let key in val) {
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| 30 | res[key] = cloneDeep(val[key], instanceClone);
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| 31 | }
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| 32 | return res;
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| 33 | }
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| 34 | return val;
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| 35 | }
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| 36 |
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| 37 | function cloneArrayDeep(val, instanceClone) {
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| 38 | const res = new val.constructor(val.length);
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| 39 | for (let i = 0; i < val.length; i++) {
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| 40 | res[i] = cloneDeep(val[i], instanceClone);
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| 41 | }
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| 42 | return res;
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| 43 | }
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| 44 |
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| 45 | /**
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| 46 | * Expose `cloneDeep`
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| 47 | */
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| 48 |
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| 49 | module.exports = cloneDeep;
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