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Worker threads and C++ backed objects #2754

Description

@Flackus
  • Node.js Version: 12.16.3
  • OS: Linux
  • Scope: runtime
  • Module (and version): worker_threads

Hi, I've been recently playing with worker threads as in version 12.16.3.

The doc explicitly says that you can't pass a C++ backed object via postMessage: https://nodejs.org/dist/latest-v12.x/docs/api/worker_threads.html#worker_threads_port_postmessage_value_transferlist
And this is true, you can't :) The standard makes it pretty obvious.

Any chance someone may shed some light on why is it so? Or even better, maybe someone has already found a workaround?

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