Error when exporting Lua language server documentation

How are you using the lua-language-server?

Visual Studio Code Extension (sumneko.lua)

Which OS are you using?

Windows

What is the issue affecting?

Other

Expected Behaviour

documentation export

Actual Behaviour

I encountered an error when trying to export documentation using the Lua language server (sumneko.lua-3.14.0):
[error]: script\cli\doc\export.lua:61: bad argument #1 to 'canonical' (bee::path expected, got nil)

Reproduction steps

1. Install sumneko.lua-3.14.0 extension in VS Code
2. Create a simple Lua project with documentation comments
3. Try to export documentation (through command palette)

Additional Notes

This appears to be a regression or oversight in the extension where it attempts to use a variable before it's defined. The fix is straightforward and might help other users encountering the same issue.

Solution

I fixed this by modifying script\cli\doc\export.lua to define the DOC variable with a simpler fallback approach that doesn't rely on non-existent functions:

-- Define DOC variable to avoid nil error
local DOC = DOC or (ws.rootUri and fs.path(furi.decode(ws.rootUri)) or fs.current_path())

This simple fix ensures that DOC is always defined with a valid path value before it's used in the getLocalPath function, allowing the documentation export functionality to work properly.

Log File

[00:02:10.453][error][#0]: script\cli\doc\export.lua:61: bad argument #1 to 'canonical' (bee::path expected, got nil)
stack traceback:
[C]: in function 'bee.filesystem.canonical'
script\cli\doc\export.lua:61: in field 'getLocalPath'
script\cli\doc\export.lua:170: in field '?'
script\cli\doc\export.lua:118: in field 'documentObject'
script\cli\doc\export.lua:261: in field 'variable'
script\cli\doc\export.lua:235: in field '?'
script\cli\doc\export.lua:118: in field 'documentObject'
script\cli\doc\export.lua:287: in field 'makeDocs'
script\cli\doc\init.lua:162: in function 'cli.doc.makeDoc'
script\core\command\exportDocument.lua:10: in function 'core.command.exportDocument'
script\provider\provider.lua:1009: in function <script\provider\provider.lua:987>
[C]: in function 'xpcall'
script\proto\proto.lua:202: in function <script\proto\proto.lua:177>

Start with script/cli/doc/export.lua, especially getLocalPath at line 61, and reproduce the failure by exporting documentation from the VS Code command palette in a Lua project. Check the proposed path fallback and verify that documentation export completes without the nil-path canonical error.