58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
import assert from 'node:assert';
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// IMPORTANT: this file is required from the migration logic. avoid requires
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// note: returns shallow copy. use structuredClone() on top to get a deep copy
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function pick(obj, keys) {
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assert(Array.isArray(keys));
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return Object.fromEntries(Object.entries(obj).filter(([key]) => keys.includes(key)));
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}
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// note: returns shallow copy. use structuredClone() on top to get a deep copy
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function omit(obj, keys) {
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assert(Array.isArray(keys));
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return Object.fromEntries(Object.entries(obj).filter(([key]) => !keys.includes(key)));
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}
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function intersection(arr1, arr2) {
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assert(Array.isArray(arr1));
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assert(Array.isArray(arr2));
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return arr1.filter(value => arr2.includes(value));
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}
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// can be arrays or objects
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function isEqual(val1, val2) {
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if (val1 === val2) return true;
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if (Array.isArray(val1) && Array.isArray(val2)) {
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if (val1.length !== val2.length) return false;
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return val1.every((item, index) => isEqual(item, val2[index]));
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} else if (val1 !== null && typeof val1 === 'object' && val2 !== null && typeof val2 === 'object') {
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const keys1 = Object.keys(val1), keys2 = Object.keys(val2);
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if (keys1.length !== keys2.length) return false;
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return keys1.every(key => isEqual(val1[key], val2[key])); // Recursively compare object properties
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} else {
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return false;
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}
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}
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function difference(array, values) {
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assert(Array.isArray(array));
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assert(Array.isArray(values));
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const valueSet = new Set(values);
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return array.filter(item => !valueSet.has(item));
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}
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export default {
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pick,
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omit,
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intersection,
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isEqual,
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difference
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};
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