source: node_modules/es-toolkit/dist/map/mapKeys.d.ts

/**
 * Creates a new Map with the same values but with keys transformed by the provided function.
 *
 * This function takes a Map and a function that generates a new key from each value-key pair.
 * It returns a new Map where the keys are the result of applying the function to each entry,
 * while the values remain the same.
 *
 * @template K - The type of keys in the Map.
 * @template V - The type of values in the Map.
 * @param {Map<K, V>} map - The Map to transform.
 * @param {(value: V, key: K, object: Map<K, V>) => K} getNewKey - A function that generates a new key from a value-key pair.
 * @returns {Map<K, V>} A new Map with transformed keys and the same values.
 *
 * @example
 * const map = new Map([
 *   ['a', 1],
 *   ['b', 2],
 *   ['c', 3]
 * ]);
 * const result = mapKeys(map, (value, key) => key.toUpperCase());
 * // result will be:
 * // Map(3) {
 * //   'A' => 1,
 * //   'B' => 2,
 * //   'C' => 3
 * // }
 */
declare function mapKeys<K, V>(map: Map<K, V>, getNewKey: (value: V, key: K, object: Map<K, V>) => K): Map<K, V>;

export { mapKeys };