41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
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const isUnsafeProperty = require('../_internal/isUnsafeProperty.js');
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const isPlainObject = require('../predicate/isPlainObject.js');
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function merge(target, source) {
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const sourceKeys = Object.keys(source);
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for (let i = 0; i < sourceKeys.length; i++) {
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const key = sourceKeys[i];
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if (isUnsafeProperty.isUnsafeProperty(key)) {
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continue;
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}
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const sourceValue = source[key];
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const targetValue = target[key];
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if (Array.isArray(sourceValue)) {
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if (Array.isArray(targetValue)) {
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target[key] = merge(targetValue, sourceValue);
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}
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else {
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target[key] = merge([], sourceValue);
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}
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}
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else if (isPlainObject.isPlainObject(sourceValue)) {
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if (isPlainObject.isPlainObject(targetValue)) {
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target[key] = merge(targetValue, sourceValue);
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}
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else {
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target[key] = merge({}, sourceValue);
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}
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}
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else if (targetValue === undefined || sourceValue !== undefined) {
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target[key] = sourceValue;
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}
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}
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return target;
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}
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exports.merge = merge;
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