Microsoft/monaco-editor

[Bug] Failed to load source map simpleWorker.nls.js.map

Open

#3,336 opened on Sep 28, 2022

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 (11 comments) (11 reactions) (0 assignees)JavaScript (14,836 stars) (1,283 forks)batch import
bughelp wantedwebsite

Description

Reproducible in vscode.dev or in VS Code Desktop?

  • Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

Monaco Editor Playground Code

No response

Reproduction Steps

  • Visit playground
  • Open dev tools
  • You will see errors in the console.

Actual (Problematic) Behavior

DevTools failed to load source map: Could not load content for https://microsoft.github.io/min-maps/vs/base/common/worker/simpleWorker.nls.js.map: Fetch through target failed: Target not supported; Fallback: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

Expected Behavior

All source maps should load properly.

Additional Context

It seems that map is using an absolute path.

Contributor guide

Tech stack
javascripttypescript
Domain
frontend
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
basic understanding of source mapsweb development experience
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
The issue reports a 404 error for the source map file https://microsoft.github.io/min maps/vs/base/common/worker/simpleWorker.nls.js.map. Investigate why this file is missing from the server and whether the path should be relative instead of absolute. Check the build configuration for source map generation and deployment. Look at the monaco editor build scripts or the webpack/rollup config to see how source maps are named and referenced. Ensure that simpleWorker.nls.js.map is generated and placed in the correct location.