syntaxes tokens supports ---@diagnostic

Author: sumneko

syntaxes/lua.tmLanguage.json

@@ -634,6 +634,36 @@
 						}
 					]
 				},
+				{
+					"begin": "(?<=---\\s*)@diagnostic(?:)?",
+					"beginCaptures": {
+						"0": {
+							"name": "storage.type.annotation.lua"
+						}
+					},
+					"end": "(?=\\n)",
+					"patterns": [
+						{
+							"begin": "\\s+[a-zA-Z_\\-0-9]+",
+							"beginCaptures": {
+								"0": {
+									"name": "keyword.other.unit"
+								}
+							},
+							"end": "(?=\\n)",
+							"patterns": [
+								{
+									"match": "\\b([a-zA-Z_\\*][a-zA-Z0-9_\\-]*)",
+									"name": "support.class.lua"
+								},
+								{
+									"match": ",",
+									"name": "keyword.operator.lua"
+								}
+							]
+						}
+					]
+				},
 				{
 					"begin": "(?<=---)\\|\\s*[\\>\\+]?",
 					"beginCaptures": {