Previewer is not available after successful build of project on Linux

[Apisteftos]

Bug

Hello I am trying to preview just a simple welcome to Avalonia project but it seems that preview button doesn't work.

To Reproduce

Steps to reproduce the behavior:

1. Build the project dotnet build
2. Go to MainWindow.axaml or App.axaml
3. Click on the Show Preview
4. Throws an error: Previewer is not available. Build the project first.
5. Type dotnet run works fine.
6. Restart the VScode same issue
7. Re-open folder does't work

Expected behavior

Working Show Preview

Environment

• OS: Linux (Ubuntu 22.04.1 LTS)
• Avalonia-Version: [0.0.31]

[tofferteves]

@Apisteftos would you like to try a workaround? I had a similar issue in MacOS. you can edit directly the extension inside the .vscode folder

Previewer is not available

[lukewire129]

I updated the post at the end
Check it out!

[wl2776]

Same here.

• OS: Linux Ubuntu 24.04
• Avalonia for VSCode version: 0.0.31

I have tried a workaround suggested by @tofferteves, and it doesn't work.

I have added a line, calling previewerAssetCommand, to out/commands/ShowPreviewToSideCommand.js:

    async execute(mainUri, allUris) {
        const activeFile = mainUri ?? vscode.window.activeTextEditor?.document.uri;
        await vscode.commands.executeCommand(Utilities_1.AppConstants.previewerAssetsCommand);   // <<-- test to force update the workspace

I had to add Utilities_1., because AppConstants was undefined.

After adding this line, on the first attempt, there was a rotating indicator on the status line of VSCode in the bottom.

However, no preview has appeared, and the Command palette now doesn't show Avalonia: Show preview

log

2024-12-27 17:14:52.185 [info] Creating language service
2024-12-27 17:14:53.123 [info] Starting Avalonia Language Server...
2024-12-27 17:14:53.139 [info] [Trace - 5:14:53 PM] Sending request 'initialize - (0)'.
2024-12-27 17:14:54.165 [info] [Trace - 5:14:54 PM] Received response 'initialize - (0)' in 1026ms.
2024-12-27 17:14:54.165 [info] [Trace - 5:14:54 PM] Sending notification 'initialized'.
2024-12-27 17:14:54.168 [info] [Trace - 5:14:54 PM] Sending notification 'workspace/didChangeConfiguration'.
2024-12-27 17:14:54.510 [info] [Trace - 5:14:54 PM] Received request 'client/registerCapability - (1)'.
2024-12-27 17:14:54.510 [info] [Trace - 5:14:54 PM] Sending response 'client/registerCapability - (1)'. Processing request took 1ms
2024-12-27 17:14:54.556 [info] [Trace - 5:14:54 PM] Received request 'workspace/configuration - (2)'.
2024-12-27 17:14:54.556 [info] [Trace - 5:14:54 PM] Sending response 'workspace/configuration - (2)'. Processing request took 1ms
2024-12-27 17:14:54.681 [info] [Trace - 5:14:54 PM] Received request 'workspace/configuration - (3)'.
2024-12-27 17:14:54.681 [info] [Trace - 5:14:54 PM] Sending response 'workspace/configuration - (3)'. Processing request took 1ms
2024-12-27 17:15:00.160 [info] [Trace - 5:15:00 PM] Sending notification 'textDocument/didOpen'.
2024-12-27 17:15:00.223 [info] [Trace - 5:15:00 PM] Received request 'workspace/configuration - (4)'.
2024-12-27 17:15:00.223 [info] [Trace - 5:15:00 PM] Sending response 'workspace/configuration - (4)'. Processing request took 0ms
2024-12-27 17:15:00.281 [info] [Trace - 5:15:00 PM] Received notification 'window/logMessage'.
2024-12-27 17:15:00.281 [info] [Info  - 5:15:00 PM] AvaloniaLanguageServer.Handlers.TextDocumentSyncHandler: ** DidOpenText: file:///home/wl2776/util/sourcegit/src/Views/DiffView.axaml | Uri='file:///home/wl2776/util/sourcegit/src/Views/DiffView.axaml'
2024-12-27 17:15:01.806 [info] Command avalonia.previewProcess, file:///home/wl2776/util/sourcegit/src/Views/DiffView.axaml
2024-12-27 17:15:09.026 [info] Command avalonia.previewProcess, file:///home/wl2776/util/sourcegit/src/Views/DiffView.axaml
2024-12-27 17:15:12.149 [info] [EXT - INFO] Solution data path path: /tmp/SourceGit.sln.json
2024-12-27 17:15:12.180 [info] parser process args: /bin/sh,-c,dotnet "/home/wl2776/.vscode/extensions/avaloniateam.vscode-avalonia-0.0.31/solutionParserTool/SolutionParser.dll" "/home/wl2776/util/sourcegit/SourceGit.sln"
2024-12-27 17:15:28.690 [info] Command avalonia.previewProcess, file:///home/wl2776/util/sourcegit/src/Views/DiffView.axaml
2024-12-27 17:15:34.682 [info] [EXT - INFO] Solution data path path: /tmp/SourceGit.sln.json
2024-12-27 17:15:34.721 [info] parser process args: /bin/sh,-c,dotnet "/home/wl2776/.vscode/extensions/avaloniateam.vscode-avalonia-0.0.31/solutionParserTool/SolutionParser.dll" "/home/wl2776/util/sourcegit/SourceGit.sln"