Worker is not defined for target Node.js

[kevzettler]

Bug report

I am trying to use the new Webpack 5 native worker features. per @alexander-akait 's comment at webpack-contrib/worker-loader#301 (comment)

I was under the impression the worker support would work for both web workers and node.js worker-threads.
I understand the documentation is not yet ready and hope i'm missing something obvious.

What is the current behavior?
ReferenceError: Worker is not defined

in a target:node build

If the current behavior is a bug, please provide the steps to reproduce.

I have created a minimal reproduction repository at: https://github.com/kevzettler/webpack5-worker-test

What is the expected behavior?
Per comment at: webpack-contrib/worker-loader#301 (comment)
and discussion at:
#6472 (comment)

I assumed new Worker(new URL("./worker", import.meta.url)) would work in a Node.js target

Other relevant information:
webpack version:

webpack 5.11.1
webpack-cli 4.3.1

Node.js version:
v12.18.1
Operating System:
macOs Mojave 10.14.6
Additional tools:

[alexander-akait]

Because Worker doesn't exists in Node.js you need to use, supported syntaxes

webpack/lib/dependencies/WorkerPlugin.js

Line 37 in 923be31

];

(but you can add own too), please look at Worker from worker_threads

[kevzettler]

@alexander-akait I need help. How do I use this syntax?

 worker = new Worker from worker_threads(new URL('./server.worker', import.meta.url));

Is not valid and breaks typescript

(but you can add own too),

How would I do this?

[sokra]

Please also read the node.js documentation about how to use workers in node. It's a bit different compared to the browser.

import { Worker } from "worker_threads";

new Worker(new URL(...))

[alexander-akait]

@kevzettler answer above

[kevzettler]

thanks yall. got it.