LuaLS / LuaLS/lua-language-server

ipairs take string[] report "param-type-mismatch"

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Info Needed
Dominant language
Lua
Stars
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Forks
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Description

### 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?

Type Checking

### Expected Behaviour

ipairs() can take param type string[]

### Actual Behaviour

call ipairs() with param type string[], it reports warn "param-type-mismatch"

### Reproduction steps

1. use ngx.re.split return string[]
2. use ipairs take string[]
3. reports warn "param-type-mismatch"

### Additional Notes

_No response_

### Log File

_No response_

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

Reproduce the warning in the Visual Studio Code extension using ngx.re.split to produce a string[] and then passing it to ipairs(). Start by tracing the type-checking handling for ipairs and confirm that the call no longer reports param-type-mismatch for string[] input.

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
35/100

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