Function mapNotUndefined

Maps the given iterable to a new array with the given transform function. The result of the transform function will only be included in the returned array, if and only if the result was strictly not equal to undefined.

Thus, the returned array can never include undefined. However, it could include null.

Use this if you want to map and filter simultaneously; avoiding unnecessary loops.

See

mapNotNullish

Example

const accounts = [{ id: 0, name: 'A' }, { id: 1 }];
const names: string[] = mapNotUndefined(accounts, account => account.name);