Can I skip debugging of a script?

[MF91WorkPS]

Hi,

our users can use Visual Studio Code to write and debug their scripts. Before executing user scripts, the engine loads a few placeholders, containing information about the runtime or occurred events that caused the script execution. The code looks like this:

          using (V8Runtime runtime = new V8Runtime("V8RuntimeTest"))
            {
                //If user enables debugging, these flags are set.
                var flags = V8ScriptEngineFlags.EnableRemoteDebugging 
                    | V8ScriptEngineFlags.EnableDebugging 
                    | V8ScriptEngineFlags.AwaitDebuggerAndPauseOnStart;

                using (V8ScriptEngine engine = new V8ScriptEngine("V8ScriptEngineTest", flags))
                {
                    //I want the debugger to skip this script.
                    engine.Execute("const placeholders = {"placeholder1":"placeholderValue1","placeholder2":"placeholderValue2"};");

                    engine.Execute("someUserScript.js", "test(); async function test() { }");
                }
            }

Currently, the Visual Studio Code Debugger halts on the placeholder definition. To improve the user experience I would like the debugger to skip the first script and only enable debugging of the user script. I have tried several approches to achieve this such as using the engine.Execute(documentName, code); overload and specifying skipFiles with different path variations - such as:

{
  "launch": {
    "version": "0.2.0",
    "configurations": [
      {
        "name": "Attach to ClearScript V8 on port 9222",
        "type": "node",
        "request": "attach",
        "protocol": "inspector",
        "address": "localhost",
        "port": 9222,
        "skipFiles": [
          "<node_internals>/documentName"
        ]
      }
    ]
  }
}

Is it possible to tell the Visual Studio Code Debugger to skip the script or can I tell the V8ScriptEngine somehow to enable remote debugging only for the second script? Thanks!

[ClearScriptLib]

Hi @MF91WorkPS,

can I tell the V8ScriptEngine somehow to enable remote debugging only for the second script?

V8 provides no way to enable debugging support on a per-script basis.

If you specify V8ScriptEngineFlags.AwaitDebuggerAndPauseOnStart, ClearScript will wait for a debugger connection the first time you execute a script. There's currently no way to alter that behavior.

However, being able to run "system" scripts before waiting for a debugger connection is something several users have asked for. We'll look into that for a future release.

Thanks!

[MF91WorkPS]

Thanks for the information.

[ClearScriptLib]

Version 7.3.6 added DocumentFlags.AwaitDebuggerAndPause.