function hasSubscribers
Usage in Deno
```typescript import { hasSubscribers } from "node:node__diagnostics_channel.d.ts"; ```
hasSubscribers(name: string | symbol): boolean
Check if there are active subscribers to the named channel. This is helpful if
the message you want to send might be expensive to prepare.
This API is optional but helpful when trying to publish messages from very
performance-sensitive code.
```js
import diagnostics_channel from 'node:diagnostics_channel';
if (diagnostics_channel.hasSubscribers('my-channel')) {
// There are subscribers, prepare and publish message
}
```
boolean
If there are active subscribers