/**
 * Internal helper to convert iteratee shorthand to functions.
 * Supports:
 * - Function: passed through as-is
 * - String: property access (including dot-notation for deep paths)
 */
/**
 * Iteratee type that accepts function or property path string.
 */
export type Iteratee<T, R> = ((item: T, index: number) => R) | keyof T | (string & {});
/**
 * Convert an iteratee (function or string) to a function.
 * String iteratees support dot-notation for deep property access.
 *
 * @param iteratee - Function or property path string
 * @returns Function that extracts the value
 */
export declare function toIteratee<T, R>(iteratee: Iteratee<T, R>): (item: T, index: number) => R;
/**
 * Deep property getter with default value support.
 * Used by getHot utility.
 */
export declare function getPath<T, D = undefined>(obj: T, path: string | readonly (string | number)[], defaultValue?: D): unknown | D;
/**
 * Deep property setter.
 * Used by setHot utility.
 */
export declare function setPath<T extends object>(obj: T, path: string | readonly (string | number)[], value: unknown): T;
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