33 lines
1.1 KiB
JavaScript
33 lines
1.1 KiB
JavaScript
'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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function changes(newObj, origObj) {
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let arrayIndexCounter = 0
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const newObjChange = transform(newObj, function (result, value, key) {
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if (!isEqual(value, origObj[key])) {
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let resultKey = isArray(origObj) ? arrayIndexCounter++ : key
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result[resultKey] = (isObject(value) && isObject(origObj[key])) ? changes(value, origObj[key]) : value
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}
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});
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const origObjChange = transform(origObj, function (result, value, key) {
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if (!isEqual(value, newObj[key])) {
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let resultKey = isArray(newObj) ? arrayIndexCounter++ : key
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result[resultKey] = (isObject(value) && isObject(newObj[key])) ? changes(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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return changes(newObj, origObj)
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}
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module.exports = difference; |