27 lines
681 B
JavaScript
27 lines
681 B
JavaScript
/* eslint-disable no-restricted-syntax, no-param-reassign, no-continue */
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const isPlainObject = require('./is_plain_object');
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function merge(target, ...sources) {
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for (const source of sources) {
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if (!isPlainObject(source)) {
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continue;
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}
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for (const [key, value] of Object.entries(source)) {
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/* istanbul ignore if */
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if (key === '__proto__' || key === 'constructor') {
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continue;
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}
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if (isPlainObject(target[key]) && isPlainObject(value)) {
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target[key] = merge(target[key], value);
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} else if (typeof value !== 'undefined') {
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target[key] = value;
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}
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}
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}
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return target;
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}
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module.exports = merge;
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