Extension 'ESlint' cannot format file 'index.ts' caused by probing failure

I encountered the problem Extension 'ESlint' cannot format file 'index.ts' while trying to format my TypeScript code in a Vue project. Here is the snapshot:

And here is my settings.json in the workspace:

"eslint.format.enable": true,
"editor.codeActionsOnSave": {
  "source.fixAll.eslint": true
},
"[typescript]": {
  "editor.defaultFormatter": "dbaeumer.vscode-eslint"
}

Then, I try to turn on the trace log of plugin with "eslint.trace.server": "verbose". The plugin gives the following output:

[Info  - 下午10:17:00] ESLint library loaded from: D:\code\web\***\node_modules\eslint\lib\api.js
[Trace - 下午10:17:01] Received request 'eslint/probeFailed - (4)'.
Params: {
    "textDocument": {
        "uri": "file:///d%3A/code/web/***/src/backend/index.ts"
    }
}


[Trace - 下午10:17:01] Sending notification 'textDocument/didClose'.
Params: {
    "textDocument": {
        "uri": "file:///d%3A/code/web/***/src/backend/index.ts"
    }
}


[Trace - 下午10:17:01] Sending response 'eslint/probeFailed - (4)'. Processing request took 0ms
No result returned.

It seems that probing failure causes the problem. So, I use the settings "eslint.validate": ["typescript"] to enforce validating of TypeScript. Finally, the problem got solved, and soon it is available to format my TypeScript code with ESLint.

The question has been reported for multiple times (#1086, #850, #951), is it a bug or feature?

The following information may be useful:

• The project is generated by @vue/cli v4
• Problem can be reproduced on any kinds of TypeScript file, even a Hello World
• The .ts file can be fixed by eslint --fix index.ts
• OS System: Windows 10 20H2
• Node: v14 globally installed, v12 used by VSCode
• VSCode version: v1.52.1
• Extension version: v2.1.14

Thank you for help!

[dbaeumer]

@jamiehaywood great that you figured it out. I agree ESLint can be confusing especially you need some configuration to validate anything other than js.

Looking forward to your PR. I will close the issue

@maximumstock can you please provide me with a GitHub repository I can clone that demos what you are experiencing.

[mrvisser]

I had this issue just now, same error, not vue or anything, just a typescript project with no TSX files.

I nuked my node_modules, ran npm install, then shift+cmd+p: Reload window / restart vscode, and that fixed it for me. I didn’t update the eslint.validate setting.

Not the solution we need, but perhaps the one that we deserve.