Error processing "stepIn": Can only perform operation while paused.

[egamma]

Testing #26557

• Using the smoke test repository https://github.com/Microsoft/vscode-smoketest-express. Change the launch config to use the inspector protocol
• set a break point at index.js line 6
• F5
• navigate to localhost:3000
• use F11 to step quickly into the code (hold F11 pressed)

[node-debug2] Error processing "stepIn": Can only perform operation while paused.: Error: [node-debug2] Error processing "stepIn": Can only perform operation while paused.
    at file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:2148932
    at Object.v [as _notify] (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:70090)
    at Object.enter (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:73591)
    at n.Class.derive._oncancel._run (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:74912)
    at n.Class.derive._oncancel._error (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:74429)
    at file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1941224
    at g.e.dispatch (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1942575)
    at g.e.handleData (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1942083)
    at Socket.<anonymous> (file:///C:/Program Files (x86)/Microsoft VS Code Insiders/resources/app/out/vs/workbench/electron-browser/workbench.main.js:28:1941084)
    at emitOne (events.js:96:13)

[isidorn]

This error is coming from the node2 debug adapter thus forwarding to @roblourens
Since it is a common use case that users quickly press step I suggest we simply swallow the error when you are not paused.

[roblourens]

@isidorn It looks like vscode will send stepIn requests constantly without waiting for the debug adapter to be paused. Is that expected? In which case, yes I should just swallow the error from Chrome.

[isidorn]

@roblourens yes vscode will send stepIn requests as user successfully clicks on them.

In the perfect scenario I would disable the stepIn until the debugger is paused, but I do not change state until I get a response from the debugger, thus the user can press StepIn 10 times before the first response is back and the debugger is no longer stopped.

Bottom line I think you should just swallow the error from Chrome :)