Function map

map<T, R>(fn: (chunk: T) => SyncOrAsync<R>): TransformStream<T, R>
Map function for transforming stream chunks
Type Parameters
- T
- R
Parameters
- fn: (chunk: T) => SyncOrAsync<R>
  The transformation function to apply to each chunk
Returns TransformStream<T, R>
A TransformStream that applies the transformation
Example
```
const stream = readable.pipeThrough(map(x => x * 2));
```
- Defined in index.ts:43