--bar.lua
local M = {}

---@field [parent=#global] bar#bar bar
bar = M

---@function [parent=#bar] foobar
function M.foobar()
end

return M

--foo.lua
local M = {}

---@field [parent=#global] foo#foo foo
foo = M

---@function [parent=#foo] completeme
function M.completeme()
end

return M

--main.lua
local Foo = require("foo")
local Bar = require("bar")

local function main()

Foo.completeme()
Bar.foobar()
bar.foobar()
foo.
end

main()