Unhandled promise rejections when changing branch with missing files

[kevinbeal]

This doesn't appear to be breaking any functionality, the "OUTPUT" log pops up with messages like this:

[Error - 10:32:01 AM] (node:32486) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
[Error - 10:32:01 AM] (node:32486) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): Error: ENOENT: no such file or directory, stat '/Users/kevin/engine/vars.less'

The file at /Users/kevin/engine/vars.less is on the branch I'm moving away from and not in the branch I'm moving to.

I'm on 1.12.1 of VSCode and 0.6.2 of vscode-less (if that matters).

I'm not really sure what upgrading to a new Node.js will do to the extension or the editor, but it sounds bad.

[jkondela]

I'm getting similar error as above in the Output tab.
But my problem is not with switching branch or something with missing file, it's in general when I start vscode with less files in project.
And the last thing it breaks funkcionality, not sure if all, but some as variable/mixins completion, go to definition don't work anymore.

I'm not sure, but i have opinion the last update of vscode (April update) broke this plugin.

OUTPUT:
[Error - 8:03:44] (node:11068) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property '1' of null [Error - 8:03:44] (node:11068) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. [Error - 8:03:44] (node:11068) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property '1' of null [Error - 8:04:13] (node:11068) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 1) [Error - 8:04:13] (node:11068) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 2)

Less IntelliSense v0.6.2
VSCode v1.12.1

[mrmlnc]

Thanks for Issue. I'll work on this very soon.

[mrmlnc]

@kevinbeal, @jkondela, Please, try to use this version of plugin. I'm fix some problems and add debug parameters for catch errors. just try your cases and report the error to this issue.

https://github.com/mrmlnc/vscode-less/releases/tag/0.6.3 (*.vsix file)

How to install this version:

• Remove previous version of this plugin.
• Click on the plugins menu (three dots) and click on the "Install from VSIX" label.
• Select .vsix file from link above and click "ok"
• Follow the instructions of the editor.

This is not final fix for @kevinbeal issue. I'm just trying to get more information, before start work on this issue.

[jkondela]

@mrmlnc After reinstall from .vsix I'm getting the same error + some debug, but nothing more.
See below:

[Error - 9:35:21] (node:6716) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property '1' of null [Error - 9:35:21] (node:6716) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code. [Error - 9:35:21] (node:6716) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 2): TypeError: Cannot read property '1' of null [Error - 9:35:46] (node:6716) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 1) [Error - 9:35:46] (node:6716) PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 2) [Error - 9:35:46] [object Object]

New log: [Error - 9:35:46] [object Object]

Update:
Errors are generated when I started vscode and also when switching git branchs

[kevinbeal]

@mrmlnc After installing the .vsix file, I am no longer getting the output console popping up with promise rejection errors as before.

It worked for me :) 👍

[kevinbeal]

I spoke too soon. I'm also getting the [Error - 9:36:37 AM] [object Object] message.

I'm not sure exactly when it happened, but I had a .less file open. I think having a .less file open was necessary to reproduce the error..?

[mrmlnc]

Hello,

I'm will be work on this issue today. You can provide more detailed steps to reproduce your issue?

As I understand your steps:

0. Create two files in the master branch: a.less and b.less and them commit their.
1. Create switcher branch.
2. Commit c.less to master branch
3. Open c.less in the editor
4. Switch to switcher branch

Also I think that the b.less file has @import for c.less? May be you can provide simple repository to reproduce?

[jkondela]

I have tried this on my personal computer with clean install vscode-less a it is working properly. Also when I have switched branches. That's so weird.

[mrmlnc]

Please, try to use 0.6.3 from the Marketplace.

[jkondela]

Ok, I tried to use new version from market and now I'm getting in OUTPUT tab 2 more lines
[vscode-less]: TypeError [vscode-less]: TypeError: Cannot read property '1' of null

And in developer console is this error. I hope it helps.

Language client is not ready yet: Error: Language client is not ready yet at LanguageClient.sendRequest (C:\Users\jaro\.vscode\extensions\mrmlnc.vscode-less-0.6.3\node_modules\vscode-languageclient\lib\main.js:585:19) at disposable.(anonymous function).vscode.window.onDidChangeActiveTextEditor (C:\Users\jaro\.vscode\extensions\mrmlnc.vscode-less-0.6.3\out\client.js:44:16) at e.invoke (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:30934) at e.fire (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:34741) at c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:346486 at e.invoke (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:30934) at e.fire (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:34741) at t.$acceptDocumentsAndEditorsDelta (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:300898) at t.e.handle (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:266428) at s (c:\Program Files (x86)\Microsoft VS Code\resources\app\out\vs\workbench\node\extensionHostProcess.js:4:154931) e.onUnexpectedError @ /C:/Program Files (x86)/Microsoft VS Code/resources/app/out/vs/workbench/electron-browser/workbench.main.js:29

[mrmlnc]

Well, most likely now error related to one of providers (completion and etc.) or parser. You can provide GIF for your case or/and your file (for reproduce error)?

Also you can set less.showErrors to False to skip errors.

P.S.: In 1.0.0 version I'll add telemetry for this cases.