function markAsUntransferable
Usage in Deno
```typescript import { markAsUntransferable } from "node:node__worker_threads.d.ts"; ```
markAsUntransferable(object: object): void
> [!WARNING] Deno compatibility
> This symbol is not supported.
Mark an object as not transferable. If `object` occurs in the transfer list of
a `port.postMessage()` call, it is ignored.
In particular, this makes sense for objects that can be cloned, rather than
transferred, and which are used by other objects on the sending side.
For example, Node.js marks the `ArrayBuffer`s it uses for its `Buffer pool` with this.
This operation cannot be undone.
```js
import { MessageChannel, markAsUntransferable } from 'node:worker_threads';
const pooledBuffer = new ArrayBuffer(8);
const typedArray1 = new Uint8Array(pooledBuffer);
const typedArray2 = new Float64Array(pooledBuffer);
markAsUntransferable(pooledBuffer);
const { port1 } = new MessageChannel();
port1.postMessage(typedArray1, [ typedArray1.buffer ]);
// The following line prints the contents of typedArray1 -- it still owns
// its memory and has been cloned, not transferred. Without
// `markAsUntransferable()`, this would print an empty Uint8Array.
// typedArray2 is intact as well.
console.log(typedArray1);
console.log(typedArray2);
```
There is no equivalent to this API in browsers.
void