[Bug] 0.51.0 only: Could not create web worker

[AndersMad]

Reproducible in vscode.dev or in VS Code Desktop?

• [X] Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• [X] Not reproducible in the monaco editor playground

Monaco Editor Playground Link

No response

Monaco Editor Playground Code

No response

Reproduction Steps

If I update from 0.50.0 to 0.51.0-rc2 I get these errors:

simpleWorker.ts:36 
 Could not create web worker(s). Falling back to loading web worker code in main thread, which might cause UI freezes. Please see https://github.com/microsoft/monaco-editor#faq
simpleWorker.ts:38 
 Uncaught SyntaxError: Failed to execute 'importScripts' on 'WorkerGlobalScope': The URL './node_modules/monaco-editor/dev/vs/base/worker/workerMain.js#css' is invalid.
simpleWorker.ts:38 
 Uncaught SyntaxError: Failed to execute 'importScripts' on 'WorkerGlobalScope': The URL './node_modules/monaco-editor/dev/vs/base/worker/workerMain.js#editorWorkerService' is invalid.
...

Downgrade and it works again. Using requirejs as loader - everything has worked fine for years.

I know its RC - just a heads up.

Actual (Problematic) Behavior

No response

Expected Behavior

No response

Additional Context

No response

[AndersMad]

now also in 0.51.0

[EdiWang]

This is also happening on the monaco editor official website:

[realwugang]

try like this import EditorWorker from worker-loader?inline=no-fallback!./node_modules/monaco-editor/esm/vs/editor/editor.worker

[mattgodbolt]

We're seeing this in the released version too (0.52.0), but only on diffEditors

[AndersMad]

in v0.52 this has been fixed if you use absolute paths: requirejs.config({ paths: { "vs": window.location.origin + "/scripts/modelyn-editor/vs" .. (I am using requirejs) and @mattgodbolt I also tested the diff and that works fine.

[mattgodbolt]

@AndersMad we're using webpack; any advice on that welcomed.