error: unexpected argument --experimental-network-inspection when trying to debug

I'm using the following vscode launch.json config

{
      "name": "deno run",
      "request": "launch",
      "type": "node",
      "runtimeExecutable": "deno",
      "cwd": "${workspaceFolder}",
      "program": "${file}",
      "runtimeArgs": [
        "run",
        "--unstable",
        "--inspect-wait",
        "--allow-all"
      ],
      "env": {},
      "attachSimplePort": 9229
    },

{
      "name": "deno run",
      "request": "launch",
      "type": "node",
      "runtimeExecutable": "deno",
      "cwd": "${workspaceFolder}",
      "program": "${file}",
      "runtimeArgs": [
        "run",
        "--unstable",
        "--inspect-wait",
        "--allow-all"
      ],
      "env": {},
      "attachSimplePort": 9229
    },

which has been working fine for the last year, but now I'm getting the following error when trying to do breakpoint debugging with it:

/usr/local/bin/deno --experimental-network-inspection run ./effect-system/run.ts error: unexpected argument '--experimental-network-inspection' found tip: to pass '--experimental-network-inspection' as a value, use '-- --experimental-network-inspection' Usage: deno [OPTIONS] [COMMAND] Process exited with code 1

So it seems something is adding the --experimental-network-inspection flag I've attached a short clip showing the problem. Any ideas how to solve this? Thanks!

5 Replies

fcrozatierOP•5d ago

I've reinstalled Deno and the extension and still have the problem. I think this could have to do with vscode, I remember seeing the update screen earlier today before I had the problem for the first time 😬 So I have found a workaround If I use an attach request instead of a launch request I can debug both inside scripts and tests. The dx was a bit better with the launch request as I could do everything from the editor, now I must connect the debugger via the command line

{
      "type": "node",
      "request": "attach",
      "name": "Attach to Deno",
      "port": 9229,
      "restart": false,
      "timeout": 10000,
      "localRoot": "${workspaceFolder}",
      "remoteRoot": null
    }

{
      "type": "node",
      "request": "attach",
      "name": "Attach to Deno",
      "port": 9229,
      "restart": false,
      "timeout": 10000,
      "localRoot": "${workspaceFolder}",
      "remoteRoot": null
    }

bartlomieju•5d ago

Ugh, it looks like VSCode is adding that automatically... Could you please open an issue in Deno repo - we'll reach out to VSCode folks to try and fix it

fcrozatierOP•5d ago

There you go! https://github.com/denoland/deno/issues/29242

bartlomieju•3d ago

Thanks!

fcrozatierOP•3d ago

SOLUTION: To remove the flag add "experimentalNetworking": "off" in your launch config https://github.com/microsoft/vscode-js-debug/issues/2220

error: unexpected argument --experimental-network-inspection when trying to debug

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