gnezim
40 lines
1.1 KiB
JavaScript
40 lines
1.1 KiB
JavaScript
import { isDate, isEmptyObject, isObject, hasOwnProperty, makeObjectWithoutPrototype } from './utils.js';
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const diff = (lhs, rhs) => {
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if (lhs === rhs) return {}; // equal return no diff
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if (!isObject(lhs) || !isObject(rhs)) return rhs; // return updated rhs
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const deletedValues = Object.keys(lhs).reduce((acc, key) => {
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if (!hasOwnProperty(rhs, key)) {
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acc[key] = undefined;
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}
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return acc;
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}, makeObjectWithoutPrototype());
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if (isDate(lhs) || isDate(rhs)) {
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if (lhs.valueOf() == rhs.valueOf()) return {};
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return rhs;
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}
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return Object.keys(rhs).reduce((acc, key) => {
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if (!hasOwnProperty(lhs, key)){
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acc[key] = rhs[key]; // return added r key
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return acc;
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}
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const difference = diff(lhs[key], rhs[key]);
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// If the difference is empty, and the lhs is an empty object or the rhs is not an empty object
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if (isEmptyObject(difference) && !isDate(difference) && (isEmptyObject(lhs[key]) || !isEmptyObject(rhs[key])))
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return acc; // return no diff
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acc[key] = difference // return updated key
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return acc; // return updated key
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}, deletedValues);
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};
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export default diff;
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