[Bug] TypeError: Failed to execute 'fetch' on 'WorkerGlobalScope': Failed to parse URL from app/monaco/vs/language/json/jsonWorker.js

[cintaccs]

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Link

No response

Monaco Editor Playground Code

Reproduction Steps

No response

Actual (Problematic) Behavior

editor.main.js:9 Uncaught Error: Failed to execute 'fetch' on 'WorkerGlobalScope': Failed to parse URL from app/monaco/vs/language/json/jsonWorker.js

TypeError: Failed to parse URL from app/monaco/vs/language/json/jsonWorker.js
at A.load (workerMain.js:6:13847)
at n.load (workerMain.js:6:11936)
at r (workerMain.js:8:9341)
at f._loadModule (workerMain.js:8:9469)
at f._resolve (workerMain.js:9:452)
at f.defineModule (workerMain.js:8:5564)
at f._relativeRequire (workerMain.js:8:6188)
at a (workerMain.js:8:8519)
at workerMain.js:29:82407
at new Promise ()
at A.load (workerMain.js:6:13847)
at n.load (workerMain.js:6:11936)
at r (workerMain.js:8:9341)
at f._loadModule (workerMain.js:8:9469)
at f._resolve (workerMain.js:9:452)
at f.defineModule (workerMain.js:8:5564)
at f._relativeRequire (workerMain.js:8:6188)
at a (workerMain.js:8:8519)
at workerMain.js:29:82407
at new Promise ()
at editor.main.js:9:12

Expected Behavior

No response

Additional Context

This is 52.2 using Chrome latest - using

import loader from '@monaco-editor/loader';

"@monaco-editor/loader": "^1.4.0",

[cintaccs]

the worker loads used to work in 0.50.0

[philipsens]

Did it fail to parse because the page gives a 404?

[cintaccs]

I dont see any 404 - however I saw something....

Seems to be related to CSSMODE and JSONMODE ... ??

when using it for SQL

there is no issue

[coader]

it's ok when use sql, but show this error when load htmlworker.js

[cintaccs]

it's ok when use sql, but show this error when load htmlworker.js

not sure I understand... What I see is that it fails with jsonmode and cssmode ... which I assume will try to load workers ... however when using "sql" mode - it is using the workermain and have no loading worker issues...

[serdarciplak]

I have the same issue.

It happens when a relative path is used for paths.vs as in this sample.

require.config({ paths: { vs: 'monaco-editor/min/vs' } });

Using an absolute path fixes the issue.

require.config({ paths: { vs: 'http://localhost:5000/monaco-editor/min/vs' } });

Looks like relative paths are broken somewhere between 0.50.0 and 0.52.0. Can we get a fix for this soon, or should we use a workaround like manually adding document.baseURI as a prefix to the path?