59 lines
1.3 KiB
JavaScript
59 lines
1.3 KiB
JavaScript
/**
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* @fileoverview Utilities to operate on option objects.
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* @author Josh Goldberg
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*/
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'use strict';
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/**
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* Determines whether any of input's properties are different
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* from values that already exist in original.
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* @template T
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* @param {Partial<T>} input New value.
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* @param {T} original Original value.
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* @returns {boolean} Whether input includes an explicit difference.
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*/
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function containsDifferentProperty(input, original) {
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if (input === original) {
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return false;
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}
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if (
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typeof input !== typeof original ||
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Array.isArray(input) !== Array.isArray(original)
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) {
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return true;
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}
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if (Array.isArray(input)) {
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return (
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input.length !== original.length ||
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input.some((value, i) => containsDifferentProperty(value, original[i]))
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);
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}
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if (typeof input === 'object') {
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if (input === null || original === null) {
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return true;
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}
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const inputKeys = Object.keys(input);
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const originalKeys = Object.keys(original);
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return (
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inputKeys.length !== originalKeys.length ||
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inputKeys.some(
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(inputKey) =>
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!Object.hasOwn(original, inputKey) ||
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containsDifferentProperty(input[inputKey], original[inputKey])
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)
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);
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}
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return true;
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}
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module.exports = {
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containsDifferentProperty,
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};
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