Filter null values from a Map in JavaScript

Is it possible to filter null values from a map?

const myMap = new Map<string, string|undefined>([
  ['id1', 'value1'],
  ['id2', null],
  ['id3', 'value3'],
  ['id4', null],
]);

I would like my map with id1 and id4 only because the other ids have null values.

Thanks

>Solution :

You can convert to array, filter and create a map again:

const myMap = new Map([
  ['id1', 'value1'],
  ['id2', null],
  ['id3', 'value3'],
  ['id4', null],
]);
const res = new Map(Array.from(myMap).filter(val => val[1]))