GitHub - bjesuiter/filter-async-rxjs-pipe: Some pipe functions for rxjs 6+ which accept predicate lambdas with async return value (Promise or Observable)
![typescript - RxJS filter function not narrowing type unless directly given a typeguard its the only parameter - Stack Overflow typescript - RxJS filter function not narrowing type unless directly given a typeguard its the only parameter - Stack Overflow](https://i.stack.imgur.com/wZ8CY.png)
typescript - RxJS filter function not narrowing type unless directly given a typeguard its the only parameter - Stack Overflow
![Guard operator to filter the undefined or null object with type safe · Issue #5163 · ReactiveX/rxjs · GitHub Guard operator to filter the undefined or null object with type safe · Issue #5163 · ReactiveX/rxjs · GitHub](https://user-images.githubusercontent.com/1210596/69697486-70fdaa80-1097-11ea-9e0d-0b3ea57ab2a2.png)