passing parameters

how do you pass parameters into the worker-dom? globalThis is available inside the worker for onMessage but from the main thread, we can't seem to send anything into it
Looked into the demo/ + issues, can't find any example

Start by reviewing the demo/ examples and the existing onMessage and globalThis usage described in the issue. Document or add an example showing how parameters are sent from the main thread into the worker, with completion marked by a clear working example.

Written by the indexing model from the issue text.