fix #1103

Author: sumneko

changelog.md

@@ -4,6 +4,7 @@
 * `CHG` parse `.luarc.json` as jsonc. In order to please the editor, it also supports `.luarc.jsonc` as the file name.
 * `CHG` dose not load files in symbol links
 * `FIX` diagnostic: send empty results to every file after startup
+* `FIX` [#1103](https://github.com/sumneko/lua-language-server/issues/1103)
 
 ## 3.2.2
 `2022-4-26`

script/core/diagnostics/missing-parameter.lua

@@ -21,6 +21,7 @@ local function countFuncArgs(source)
     for i = #source.args, 1, -1 do
         local arg = source.args[i]
         if  arg.type ~= '...'
+        and not (arg.name and arg.name[1] =='...')
         and not vm.compileNode(arg):isNullable() then
             return i
         end

script/core/diagnostics/redundant-parameter.lua

@@ -16,7 +16,9 @@ local function countFuncArgs(source)
     if not source.args or #source.args == 0 then
         return 0
     end
-    if source.args[#source.args].type == '...' then
+    local lastArg = source.args[#source.args]
+    if lastArg.type == '...'
+    or (lastArg.name and lastArg.name[1] == '...') then
         return math.maxinteger
     else
         return #source.args

test/diagnostics/common.lua

@@ -217,6 +217,12 @@ end
 x(1, 2, 3, 4, 5)
 ]]
 
+TEST [[
+---@type fun(a, b, ...)
+local x
+x(1, 2, 3, 4, 5)
+]]
+
 TEST [[
 local m = {}
 function m:x(a, b)