import type { ArrayPredicate } from '../types.js';
/**
 * Find all indices where predicate returns true.
 *
 * @param arr - Input array
 * @param predicate - Function that returns true/false for each item
 * @returns Array of indices where predicate returned true
 */
export declare function findIndicesFast<T>(arr: readonly T[], predicate: ArrayPredicate<T>): number[];
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