/**
 * Transform object keys using a mapper function.
 *
 * @param obj - Input object
 * @param mapper - Function that takes (key, value) and returns new key
 * @returns New object with transformed keys
 */
export declare function mapKeysHot<K extends PropertyKey, V, NK extends PropertyKey>(obj: Record<K, V>, mapper: (key: K, value: V) => NK): Record<NK, V>;
//# sourceMappingURL=mapKeys.d.ts.map