update

1 files changed, 24 insertions, 1 deletions

diff --git a/script/core/diagnostics/duplicate-doc-field.lua b/script/core/diagnostics/duplicate-doc-field.lua
index 03f4dee5..4bed984c 100644
--- a/script/core/diagnostics/duplicate-doc-field.lua
+++ b/script/core/diagnostics/duplicate-doc-field.lua
@@ -1,8 +1,31 @@
 local files   = require 'files'
 local lang    = require 'language'
+local infer   = require 'vm.infer'
 
 local function getFieldEventName(doc)
-    
+    if not doc.extends then
+        return nil
+    end
+    if #doc.extends.types ~= 1 then
+        return nil
+    end
+    local docFunc = doc.extends.types[1]
+    if docFunc.type ~= 'doc.type.function' then
+        return nil
+    end
+    for i = 1, 2 do
+        local arg = docFunc.args[i]
+        if arg
+        and #arg.extends.types == 1 then
+            local literal = arg.extends.types[1]
+            if literal.type == 'doc.type.boolean'
+            or literal.type == 'doc.type.string'
+            or literal.type == 'doc.type.integer' then
+                return ('%q'):format(literal[1])
+            end
+        end
+    end
+    return nil
 end
 
 return function (uri, callback)