LuaLS / LuaLS/lua-language-server

problem with table return type checking

Open
#1,674 3 comments 1 reaction 0 assignees View on GitHub

Nobody has claimed this yet.

enhancement feat/type check
Dominant language
Lua
Stars
4.4k
Forks
442
PR merge metrics
No merged PRs in 30d

Description

related: https://github.com/sumneko/lua-language-server/issues/1667
I expected this to give an error
```lua
---@class cool_tbl
---@field test fun():string[]
local my_tbl = {
test = function()
return {
2,
{ "test" },
}
end,
}
```

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the Lua snippet in the issue and read the related issue #1667 for context on table return type checking. Trace the type-checking path that handles the annotated test function and nested returned table; done means this example produces the expected diagnostic without breaking valid table returns.

Written by the indexing model from the issue text.

Assessment

Tech stack
lua
Domain
tooling
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
42/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.