fix #1680

Author: sumneko

changelog.md

@@ -4,9 +4,11 @@
 * `FIX` incorrect type check for generic with nil
 * `FIX` [#1676]
 * `FIX` [#1677]
+* `FIX` [#1680]
 
 [#1676]: https://github.com/sumneko/lua-language-server/issues/1676
 [#1677]: https://github.com/sumneko/lua-language-server/issues/1677
+[#1680]: https://github.com/sumneko/lua-language-server/issues/1680
 
 ## 3.6.1
 `2022-11-8`

script/vm/compiler.lua

@@ -1367,7 +1367,8 @@ local compilerSwitch = util.switch()
         vm.compileByParentNode(source.parent, source.tindex, false, function (src)
             if src.type == 'doc.field'
             or src.type == 'doc.type.field'
-            or src.type == 'doc.type.name' then
+            or src.type == 'doc.type.name'
+            or guide.isLiteral(src) then
                 hasMarkDoc = true
                 vm.setNode(source, vm.compileNode(src))
             end

test/diagnostics/type-check.lua

@@ -1114,6 +1114,11 @@ local a, b = foo(function()
 end)
 ]]
 
+TEST [[
+---@type string|string[]|string[][]
+local t = {{'a'}}
+]]
+
 config.remove(nil, 'Lua.diagnostics.disable', 'unused-local')
 config.remove(nil, 'Lua.diagnostics.disable', 'unused-function')
 config.remove(nil, 'Lua.diagnostics.disable', 'undefined-global')