31 lines
1.0 KiB
JavaScript
31 lines
1.0 KiB
JavaScript
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'use strict';
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const { transform, isEqual, isArray, isObject } = require('lodash');
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/**
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* Find difference between two objects
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* @param {object} origObj - Source object to compare newObj against
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* @param {object} newObj - New object with potential changes
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* @return {object} differences
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*/
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const difference = (origObj, newObj) => {
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let arrayIndexCounter = 0;
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const newObjChange = transform(newObj, (result, value, key) => {
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if (!isEqual(value, origObj[key])) {
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const resultKey = isArray(origObj) ? arrayIndexCounter++ : key;
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result[resultKey] = (isObject(value) && isObject(origObj[key])) ? difference(value, origObj[key]) : value;
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}
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});
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const origObjChange = transform(origObj, (result, value, key) => {
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if (!isEqual(value, newObj[key])) {
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const resultKey = isArray(newObj) ? arrayIndexCounter++ : key;
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result[resultKey] = (isObject(value) && isObject(newObj[key])) ? difference(value, newObj[key]) : value;
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}
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});
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return Object.assign(newObjChange, origObjChange);
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};
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module.exports = difference;
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