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doc: clarify Worker exit/message event ordering #31642

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doc: clarify Worker exit/message event ordering #31642

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5 changes: 5 additions & 0 deletions doc/api/worker_threads.md
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Expand Up @@ -582,6 +582,8 @@ exited by calling [`process.exit()`][], the `exitCode` parameter will be the
passed exit code. If the worker was terminated, the `exitCode` parameter will
be `1`.

This is the final event emitted by any `Worker` instance.

### Event: `'message'`
<!-- YAML
added: v10.5.0
Expand All @@ -593,6 +595,9 @@ The `'message'` event is emitted when the worker thread has invoked
[`require('worker_threads').parentPort.postMessage()`][].
See the [`port.on('message')`][] event for more details.

All messages sent from the worker thread will be emitted before the
[`'exit'` event][] is emitted on the `Worker` object.

### Event: `'online'`
<!-- YAML
added: v10.5.0
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