Last change
on this file since 59329aa was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
initial commit
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File size:
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[6a3a178] | 1 | var assignValue = require('./_assignValue'),
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| 2 | baseAssignValue = require('./_baseAssignValue');
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| 3 |
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| 4 | /**
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| 5 | * Copies properties of `source` to `object`.
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| 6 | *
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| 7 | * @private
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| 8 | * @param {Object} source The object to copy properties from.
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| 9 | * @param {Array} props The property identifiers to copy.
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| 10 | * @param {Object} [object={}] The object to copy properties to.
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| 11 | * @param {Function} [customizer] The function to customize copied values.
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| 12 | * @returns {Object} Returns `object`.
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| 13 | */
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| 14 | function copyObject(source, props, object, customizer) {
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| 15 | var isNew = !object;
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| 16 | object || (object = {});
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| 17 |
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| 18 | var index = -1,
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| 19 | length = props.length;
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| 20 |
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| 21 | while (++index < length) {
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| 22 | var key = props[index];
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| 23 |
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| 24 | var newValue = customizer
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| 25 | ? customizer(object[key], source[key], key, object, source)
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| 26 | : undefined;
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| 27 |
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| 28 | if (newValue === undefined) {
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| 29 | newValue = source[key];
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| 30 | }
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| 31 | if (isNew) {
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| 32 | baseAssignValue(object, key, newValue);
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| 33 | } else {
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| 34 | assignValue(object, key, newValue);
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| 35 | }
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| 36 | }
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| 37 | return object;
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| 38 | }
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| 39 |
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| 40 | module.exports = copyObject;
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