Function filter

filter<In, Out>(
predicate: (chunk: In) => chunk is Out,
): TransformStream<In, Out>
Filters out queued chunks based on a predicate.
Type Parameters
- In
- Out
Parameters
- predicate: (chunk: In) => chunk is Out
Returns TransformStream<In, Out>
Example
```
--1--2--3--4--5--6--7--8--9--

filter((x) => x % 2 === 0)

-----2-----4-----6-----8-----

Using type guards will extract the types you want to work with.
```
--A--B--A--B---

filter((x): x is B => x.type === 'b')

-----B-----B---
- Defined in packages/stream/src/transformers/filter.ts:25
filter<In>(predicate: Predicate<In>): TransformStream<In, In>
Filters out queued chunks based on a predicate.
Type Parameters
- In
Parameters
- predicate: Predicate<In>
Returns TransformStream<In, In>
Example
```
--1--2--3--4--5--6--7--8--9--

filter((x) => x % 2 === 0)

-----2-----4-----6-----8-----

Using type guards will extract the types you want to work with.
```
--A--B--A--B---

filter((x): x is B => x.type === 'b')

-----B-----B---
- Defined in packages/stream/src/transformers/filter.ts:29