How to debug Deno in VSCode

Question

How do we configure .vscode/launch.json to debug Deno projects?

The IntelliSense the VSCode provides when I was in configurations didn't offer an option for Deno. Or is there an extension for this?

Answer 1

You need to attach the debugger, as per the deno manual.

Create .vscode/launch.json replacing <entry_point> with your actual script and then F5.

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Deno",
            "type": "node",
            "request": "launch",
            "cwd": "${workspaceFolder}",
            "runtimeExecutable": "deno",
            "runtimeArgs": ["run", "--inspect-brk", "-A", "<entry_point>"],
            "port": 9229
        }
    ]
}

It will stop at the breakpoints you set on VS Code, tried here and it worked fine.

About the VS Code plugin:

Official support in plugin is being worked on - https://github.com/denoland/vscode_deno/issues/12