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perf: optimize uniq for primitives using Set
- Uses `Set` for O(1) lookups on primitive values - Falls back to `deepHash` only for objects and functions - Achieves ~7x speedup on primitive arrays (625ms -> 87ms) Co-authored-by: jaruesink <4207065+jaruesink@users.noreply.github.com>
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  • packages/components/src/ui/data-table-filter/lib

packages/components/src/ui/data-table-filter/lib/array.ts

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@@ -97,9 +97,19 @@ function deepEqual(a: unknown, b: unknown): boolean {
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export function uniq<T>(arr: T[]): T[] {
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// Use a Map where key is the deep hash and value is an array of items sharing the same hash.
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const seen = new Map<string, T[]>();
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const primitives = new Set<unknown>();
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const result: T[] = [];
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for (const item of arr) {
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const type = typeof item;
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if (item === null || (type !== 'object' && type !== 'function')) {
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if (!primitives.has(item)) {
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primitives.add(item);
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result.push(item);
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}
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continue;
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}
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const hash = deepHash(item);
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if (seen.has(hash)) {
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// There is a potential duplicate; check the stored items with the same hash.

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