Jesse_Chen
19 lines
578 B
TypeScript
19 lines
578 B
TypeScript
export function preserveShallowEqual<T extends object>(current: T, next: T): T {
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if (Object.is(current, next)) return current;
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const currentRecord = current as Record<string, unknown>;
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const nextRecord = next as Record<string, unknown>;
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const currentKeys = Object.keys(currentRecord);
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const nextKeys = Object.keys(nextRecord);
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if (currentKeys.length !== nextKeys.length) return next;
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for (const key of currentKeys) {
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if (!Object.hasOwn(nextRecord, key) || !Object.is(currentRecord[key], nextRecord[key])) {
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return next;
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}
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}
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return current;
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}
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