fix(test): typing

test/functional/plugin/lsp/helpers.lua

@@ -128,6 +128,18 @@ local function fake_lsp_server_setup(test_name, timeout_ms, options, settings)
   )
 end
 
+--- @class test.lsp.Config
+--- @field test_name string
+--- @field timeout_ms? integer
+--- @field options? table
+--- @field settings? table
+---
+--- @field on_setup? fun()
+--- @field on_init? fun(client: vim.lsp.Client, ...)
+--- @field on_handler? fun(...)
+--- @field on_exit? fun(code: integer, signal: integer)
+
+--- @param config test.lsp.Config
 function M.test_rpc_server(config)
   if config.test_name then
     M.clear_notrace()
@@ -158,6 +170,7 @@ function M.test_rpc_server(config)
       end
     end,
   })
+  --- @type integer, integer
   local code, signal
   local function on_request(method, args)
     if method == 'init' then