import { type Iteratee } from '../internal/iteratee.js';
/**
 * Count occurrences of items by a key selector.
 *
 * @param arr - Input array
 * @param iteratee - Function or property path string that returns a key for each item
 * @returns Object mapping key to count
 *
 * @example
 * countByHot(users, 'role')
 * countByHot(users, user => user.department)
 */
export declare function countByHot<T, K extends PropertyKey>(arr: readonly T[], iteratee: Iteratee<T, K>): Record<K, number>;
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