Function compactMap

compactMap<T, U>(items: readonly T[], fn: (item: T) => Maybe<U>): U[]
compact(items.map(fn)) — map each item to Maybe, drop None, collect the rest.
Type Parameters
- T
- U
Parameters
- items: readonly T[]
- fn: (item: T) => Maybe<U>
Returns U[]
Example
```
compactMap(rawRows, (row) =>
  row.deletedAt ? none() : some(row.id),
);
// string[]
```
- Defined in maybe.ts:210