mapKeys

Import from @varavel/vdl-plugin-sdk/utils/maps.

function mapKeys<K, V>(map, getNewKey): Map<K, V>;

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.

Type Parameters

Type Parameter	Description
K	The type of keys in the Map.
V	The type of values in the Map.

Parameters

Parameter	Type	Description
map	Map\<K, V>	The Map to transform.
getNewKey	(value, key, object) => K	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
// }