function default.duplexPair
Usage in Deno
```typescript import mod from "node:node__stream.d.ts"; ```
duplexPair(options?: DuplexOptions): [Duplex, Duplex]
The utility function `duplexPair` returns an Array with two items,
each being a `Duplex` stream connected to the other side:
```js
const [ sideA, sideB ] = duplexPair();
```
Whatever is written to one stream is made readable on the other. It provides
behavior analogous to a network connection, where the data written by the client
becomes readable by the server, and vice-versa.
The Duplex streams are symmetrical; one or the other may be used without any
difference in behavior.
optional
options: DuplexOptions
A value to pass to both [Duplex](../.././node__stream.d.ts/~/default.Duplex) constructors,
to set options such as buffering.