perf(uniq): improve performance (#1358)

* perf(uniq): improve performance

* fix: add test case

* fix: Fix uniq function to produce consistent results with Array.from

---------

Co-authored-by: Jonghyeon Ko <[email protected]>

Author: Dohun-choi

src/array/uniq.spec.ts

@@ -36,4 +36,15 @@ describe('uniq', () => {
 
     expect(array).toEqual([1, 2, 3, 2, 1, 3]);
   });
+
+  it('should handle arrays with undefined And Hole', () => {
+    // eslint-disable-next-line no-sparse-arrays
+    const arr: any[] = [1, , 2, undefined, 3, , 2];
+    expect(uniq(arr)).toEqual([1, undefined, 2, 3]);
+  });
+
+  it('should handle arrays with special values', () => {
+    const arr = [NaN, NaN, 0, -0, Infinity, -Infinity];
+    expect(uniq(arr)).toEqual([NaN, 0, Infinity, -Infinity]);
+  });
 });

src/array/uniq.ts

@@ -14,5 +14,5 @@
  * // result will be [1, 2, 3, 4, 5]
  */
 export function uniq<T>(arr: readonly T[]): T[] {
-  return Array.from(new Set(arr));
+  return [...new Set(arr)];
 }