jdthorpe / module-federation-webworker-test

Dynamic loading in webworkers

Module Federation Webworker Test

Minimal reproduction example to demonstrate error for this issue when loading a module federation remote from a webworker script that's built using a target: 'webworker' webpack configuration.

NOTE: This project uses patch-package to apply the publicPath fix for this issue.

Error reproduction

1. Run yarn to install dependencies.
2. Run yarn serve to serve prebuilt dist (or yarn start to serve from source).
3. Load http://localhost:3001, the console should show the error Uncaught (in promise) DOMException: Failed to execute 'importScripts' on 'WorkerGlobalScope': The script at 'http://localhost:3001/webpack_container_remote_remote_remote-logger.js' failed to load.
4. Using the workaround below, the message Hello from the remote logger should appear on the page.

Workaround

Comment out this line, so that the main webworker script is not compiled using the webworker target. While this resolves the remote loading issue, presumably it would prevent chunk splitting from working, as the importScripts is replaced with a JSONP chunk loader.