/**
 * Remove duplicate values from an array using Set (reference equality).
 * Preserves order of first occurrence.
 *
 * @param arr - Input array
 * @returns New array with duplicates removed
 */
export declare function dedupeFast<T>(arr: readonly T[]): T[];
/**
 * Alias for dedupeFast.
 */
export declare const uniqueFast: typeof dedupeFast;
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