filter

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

function filter<K, V>(map, callback): Map<K, V>;

Filters a Map based on a predicate function.

This function takes a Map and a predicate function, and returns a new Map containing only the entries for which the predicate function returns true.

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 filter.
callback	(value, key, map) => boolean	A predicate function that tests each entry.

Returns

Map\<K, V>

A new Map containing only the entries that satisfy the predicate.

Example

const map = new Map([
  ['a', 1],
  ['b', 2],
  ['c', 3],
  ['d', 4]
]);
const result = filter(map, (value) => value > 2);
// result will be:
// Map(2) {
//   'c' => 3,
//   'd' => 4
// }