Vscode-arduino: Error "Cannot read property 'map' of undefined" when calling Arduino commands

[Karlo-Emilo]

I am using Windows 10.

Arduino initialize, Arduino Examples, Arduino board manager.. all gives the error:

Cannot read property 'map' of undefined

[lcguida]

Same here.

VSCode info:

Version 1.2.0 Shell 1.7.9 Renderer 58.0.3029.110 Node 7.9.0 Architecture x64
Arduino version 1.8.5

[liydu]

@Karlo-Emilo can you paste the log details so that we can look into it? Thanks.

[Karlo-Emilo]

The log:

messageService.ts:126 Cannot read property 'map' of undefined
e.doShow @ messageService.ts:126
e.show @ messageService.ts:105
e.resume @ messageService.ts:64
(anonymous) @ workbench.ts:1008
e.fire @ event.ts:142
(anonymous) @ quickOpenController.ts:534

[bjepson]

I'm getting the same thing. I tried checking out the code and debugging the extension, but I think I'm just seeing front end errors and I don't know how to debug the back end where the error is probably originating. Here's the call stack; I don't see anything in the output or debug console though:

(anonymous function) (c:\Users\bjeps\src\vscode-arduino\src\arduinoActivator.ts:19) rejected (c:\Users\bjeps\src\vscode-arduino\out\src\arduinoActivator.js:7) [ Promise.reject ] (Unknown Source:undefined) rejected (c:\Users\bjeps\src\vscode-arduino\out\src\arduinoActivator.js:7) [ Promise.reject ] (Unknown Source:undefined) m (winjs.base.raw.js:1209) enter (winjs.base.raw.js:852) _run (winjs.base.raw.js:1068) _completed (winjs.base.raw.js:1036) e.resolveOk (lazyPromise.ts:65) e._receiveReply (rpcProtocol.ts:135) e._receiveOneMessage (rpcProtocol.ts:96) (anonymous function) (rpcProtocol.ts:33) (anonymous function) (rpcProtocol.ts:213) (anonymous function) (event.ts:382) e.fire (event.ts:142) (anonymous function) (ipc.net.ts:81) emitOne (events.js:96) emit (events.js:191) readableAddChunk (_stream_readable.js:178) Readable.push (_stream_readable.js:136) onread (net.js:560)

[dstaley]

Just wanted to note that I'm experiencing the same error (with the same stack trace) running VS Code 1.20.0 on macOS 10.13.3 with Arduino IDE 1.8.5.

[bjepson]

I reverted to VS Code 1.19.3, and the extension works fine. Looks like there were a lot of changes in 1.20, so it's likely related to one of those changes.

[dstaley]

So it looks like this might be a VS Code bug, not related to this extension. To test, open a folder in VS Code (doesn't matter what kind of folder) and then try to run one of the Arduino commands. I can only replicate this issue when running in an empty workspace. The error seems to be coming from vscode.workspace.findFiles which seems to throw the error whenever the workspace is empty.

[keyoke]

that's right I also just debugged this and basically looks like this error is thrown because the "arduino.json" is not found, also makes sense that it works then with an existing project.

[keyoke]

I opened Issue here for this
https://github.com/Microsoft/vscode/issues/43757

I also have workaround here where if the findfiles promise is rejected I still initialize the Arduino settings

https://github.com/keyoke/vscode-arduino/blob/184fb032cb3b0b20ba07a9818f793f0771a518b8/src/deviceContext.ts#L142

[bleach103]

same problem I meet emmm.....
Windows 10
VScode version:1.20.1
Arduino IDE version:1.8.5
It's must be VScode‘s bug,just wait for fix.
For now just rolling back to 1.19

[czgtest]

How to repro on:

1. Open vs code new windows . here vs code not open any project.
2. Press F1 and select Arduino :Examples command
3. Verify the error: Cannot read property 'map' of undefined

[angela-rph]

Same issue with VScode 1.21.0 . Does anyone know how to fix this problem ?

[Sneezry]

We just released 0.2.11 which should have fixed this issue, please upgrade to 0.2.11 and have a try.

[czgtest]

@Karlo-Emilo @angela-rph , can you upgrade the Arduino extension to version 0.2.11 and have a try again ?

[angela-rph]

Does not work as expected for me. I got some error messages now :

However Verification & Upload still work regardless of these errors.

[keyoke]

Switching C_Cpp.intelliSenseEngine to Tag Parser in user settings as described in these instructions fixed it for me - https://stackoverflow.com/questions/47401731/issues-setting-up-mxchip-vscode-arduino-mx3166-environment-on-mac/47448652#47448652

[lirenhe]

The original problem was solved. Close it.