method ReadableBase.prototype.asIndexedPairs
Usage in Deno
```typescript import { ReadableBase } from "node:node__stream.d.ts"; ```
ReadableBase.prototype.asIndexedPairs(options?: Pick<ArrayOptions, "signal">): Readable
This method returns a new stream with chunks of the underlying stream paired with a counter
in the form `[index, chunk]`. The first index value is `0` and it increases by 1 for each chunk produced.
optional
options: Pick<ArrayOptions, "signal">
Readable
a stream of indexed pairs.