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Debugger and current debugging line are both misplaced

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#335 6 comments 5 reactions 0 assignees View on GitHub

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
typescript, vite, vscode
Domain
devtools

Research direction

Use the linked vfd repository and its launch.json to reproduce the issue: run npm install, npm run dev, then set a breakpoint in src/App.vue between lines 5 and 8 and start the Firefox configuration. Compare the debugger position and current debugging line with the working Chrome configuration; done means Firefox stops on the correct source line.

Written by the indexing model from the issue text.

Description

bug sourcemaps

This is the only thing currently keeping me from switching to firefox

Repo to reproduce

Repro steps:

add launch.json from below
npm install
npm run dev
In src/App.vue add a breakpoint between line 5 and 8
Start debugging

I am trying to debug from vscode a vue 3 with TS and vite project

As stated in the docs i did:

open the Developer Tools Settings and check the checkboxes labeled “Enable browser chrome and add-on debugging toolboxes” and “Enable remote debugging”

and executed Firefox as follows

"C:\Program Files\Mozilla Firefox\firefox.exe" -start-debugger-server

The problem is that the debugger is all jumpy and doesn’t hit the correct line:
image

Here is my launch.json (the one for chrome works perfectly well)

{
    "version": "0.2.0",
    "configurations": [
        {
            "type": "chrome",
            "request": "attach",
            "name": "Attach to Chrome",
            "port": 9222,
            "webRoot": "${workspaceFolder}",
            "urlFilter": "http://127.0.0.1:4000/*"
        },
        {
            "name": "Attach to Firefox",
            "type": "firefox",
            "request": "attach",
            "url": "http://127.0.0.1:4000",
            "webRoot": "${workspaceFolder}",
            "pathMappings": [
                {
                    "url": "http://127.0.0.1:4000/src",
                    "path": "${workspaceFolder}/src"
                }
            ]
        }
    ]
}
Dominant language
TypeScript
Stars
447
Forks
76
PR merge metrics
No merged PRs in 30d

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