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Type checking for functions as argument?

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
55/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Active
Tech stack
lua
Domain
devtools

Research direction

Start with the minimal Lua example in the issue and trace how the language server checks accepts_integer_function's fun(i: integer) parameter against mismatching_function's fun(s: string) type. Done means the language server reports a type error at the call where the incompatible function is passed.

Written by the indexing model from the issue text.

Description

Is there something I can do have type checking for passed in functions?

---@param fn fun(i: integer)
local function accepts_integer_function(fn)
end

---@type fun(s: string)
local function mismatching_function(s)
end

-- expecting this to raise an error, but it doesn't
accepts_integer_function(mismatching_function)
Dominant language
Lua
Stars
4.4k
Forks
442
Avg merge
8d 9h
Merged PRs (30d)
1

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