Table with generic type breaks if instantiated explicitly

[sporblord]

From what I tested, it seems like it's specifically breaking if the method contains a callback in any form. If I change the type of add_callback to something like (T) -> (), it works fine.

export type Object<T> = {
	add_callback: ((instance: Instance) -> T) -> ()
}

local function new<T>(): Object<T>
	return {} :: any
end

local obj1 = new<<string>>() -- *error-type*
local obj2 = new() :: Object<string> -- typed properly

[hgoldstein]

I can't seem to reproduce this issue on Roblox Studio, in VSCode with luau-lsp, nor isolated in our test suite. Is it possible you're on an outdated version of luau-lsp?

[sporblord]

I'm using studio