[Feature]: Split chunk & return the path

[felixmosh]

What problem does this feature solve?

I've an intersting use-case, when bundling Node server.

There are some time Workers that expect to get a file path.
I would like it to work exactly like rsbuild works which native worker_threads.

import { Worker } from 'bullmq'
import { pathToFileURL } from 'url';

const processorUrl = pathToFileURL(__dirname + '/my_procesor.ts');

worker = new Worker(queueName, processorUrl);

It would be cool it rsbuild / rspack would create a chunk from the my_processor.ts file, and pass the path to it. Just like it does with native worker_threads.

I've tested it, looks like it does creates a asset chunk from it, but it doesn't process the typescript.

What does the proposed API look like?

import { Worker } from 'bullmq'

worker = new Worker(queueName, new URL('/my_procesor.ts', import.meta.url));

[chenjiahan]

Thanks for the feature request. While we understand your use case with bullmq workers, we believe this is outside the scope of Rspack's core responsibilities. We want to keep Rspack focused on its primary bundling responsibilities rather than adding features for specific libraries.

The processing of worker files is specific to BullMQ's implementation, and we recommend handling this at the application level instead.

[felixmosh]

Thank you for a quick response.
It looks like there something that handles new URL as an asset, maybe, there is some config that can be changed?

[chenjiahan]

Set module.parser.javascript.url to false should disable the new URL parsing:

// rsbuild.config.ts
export default defineConfig({
  tools: {
    rspack: {
      module: {
        parser: {
          javascript: {
            url: false,
          },
        },
      },
    },
  },
});

https://rspack.dev/config/module#moduleparserjavascripturl

[felixmosh]

This just disables the parsing, no?
It would not create a chunk out of it, correct?

[chenjiahan]

Correct, no chunk will be created.

[felixmosh]

Is it possible to keep the URL parsing and just changing the type? instead of asset type to js/auto?

[felixmosh]

Maybe It can be used with this??
https://rspack.dev/config/module#moduleparserjavascriptworker

[chenjiahan]

module.parser.javascript.worker is definitely worth a try

[felixmosh]

I've tried:

        config.module.parser.javascript.worker = ['Worker from bullmq', '...'];

without success, what is the correct syntax?