fix #1229

Author: sumneko

Diff for: changelog.md

@@ -27,6 +27,7 @@
 * `FIX` diagnostics flash when opening a file
 * `FIX` sometimes workspace diagnostics are not triggered
 * `FIX` [#1228](https://github.com/sumneko/lua-language-server/issues/1228)
+* `FIX` [#1229](https://github.com/sumneko/lua-language-server/issues/1229)
 
 ## 3.3.1
 `2022-6-17`

Diff for: script/vm/compiler.lua

@@ -102,6 +102,7 @@ local searchFieldSwitch = util.switch()
         end
     end)
     : case 'string'
+    : case 'doc.type.string'
     : call(function (suri, source, key, ref, pushResult)
         -- change to `string: stringlib` ?
         local stringlib = vm.getGlobal('type', 'stringlib')
@@ -706,7 +707,8 @@ function vm.compileByParentNode(source, key, ref, pushResult)
             and node.cate == 'type'
             ---@cast node vm.global
             and not guide.isBasicType(node.name)
-        ) then
+        )
+        or node.type == 'doc.type.string' then
             searchFieldSwitch(node.type, suri, node, key, ref, function (res, markDoc)
                 if markDoc then
                     docedResults[#docedResults+1] = res

Diff for: test/diagnostics/common.lua

@@ -1675,3 +1675,23 @@ TEST [[
 ---@field [A] A
 ---@field [<!A!>] true
 ]]
+
+TEST [[
+---@diagnostic disable: unused-local
+
+---@type 'x'
+local t
+
+local n = t:upper()
+]]
+
+TEST [[
+---@diagnostic disable: unused-local
+
+---@alias A 'x'
+
+---@type A
+local t
+
+local n = t:upper()
+]]