How to annotate dynamically created functions?

[AMD-NICK]

local ROUTER_MT = {}
ROUTER_MT.__index = ROUTER_MT

for _, method in ipairs({"get", "post"}) do
	--- @function router:$method
	ROUTER_MT[method] = function(self, path, ...)
		-- ...
	end
end

[Frityet]

---@class Router
---@field [string] fun(self: Router. path: string, ...)

[AMD-NICK]

Now I did it in this way, but the methods are created from the methods table in several places: router, route and application. And while in my case the list of methods is pretty static, in some other case (like some telegram api framework) it can be a big problem

[tomlau10]

There seems no 1 line way to add dynamically created function into a class definition. After all luals will not execute the actual forloop 😅 . I would suggest adding each method using @field manually, like the following:

---@alias Router.method fun(self: Router, path: string, ...)
---@class Router
---@field get Router.method
---@field set Router.method
local ROUTER_MT = {}
ROUTER_MT.__index = ROUTER_MT

ROUTER_MT:  --< here will suggest get|set

---

methods are created from the methods table in several places: router, route and application

In luals we can add annotation to the same class multiple times, so you may add these @field in different places. luals will be able to union them together:

---@alias Router.method fun(self: Router, path: string, ...)
---@class Router
---@field get Router.method
---@field set Router.method
local ROUTER_MT = {}
ROUTER_MT.__index = ROUTER_MT

ROUTER_MT:  --< here will suggest delete|get|put|set

---@class Router
---@field put Router.method
---@field delete Router.method