Fixes #22066: Allow extensions to contribute named problem matchers via package.json

extensions/typescript/package.json

@@ -365,6 +365,42 @@
         "fileMatch": "typings.json",
         "url": "http://json.schemastore.org/typings"
       }
+    ],
+    "problemPatterns": [
+      {
+        "name": "tsc",
+        "regexp": "^([^\\s].*)\\((\\d+|\\d+,\\d+|\\d+,\\d+,\\d+,\\d+)\\):\\s+(error|warning|info)\\s+(TS\\d+)\\s*:\\s*(.*)$",
+        "file": 1,
+        "location": 2,
+        "severity": 3,
+        "code": 4,
+        "message": 5
+      }
+    ],
+    "problemMatchers": [
+      {
+        "name": "tsc",
+        "owner": "typescript",
+        "applyTo": "closedDocuments",
+        "fileLocation": ["relative", "$cwd"],
+	      "pattern": "$tsc"
+      },
+      {
+        "name": "tsc-watch",
+        "owner": "typescript",
+        "applyTo": "closedDocuments",
+        "fileLocation": ["relative", "$cwd"],
+        "pattern": "$tsc",
+        "watching": {
+          "activeOnStart": true,
+          "beginsPattern": {
+            "regexp": "^\\s*(?:message TS6032:|\\d{1,2}:\\d{1,2}:\\d{1,2}(?: AM| PM)? -) File change detected\\. Starting incremental compilation\\.\\.\\."
+          },
+          "endsPattern": {
+            "regexp": "^\\s*(?:message TS6042:|\\d{1,2}:\\d{1,2}:\\d{1,2}(?: AM| PM)? -) Compilation complete\\. Watching for file changes\\."
+          }
+        }
+      }
     ]
   }
-}
+}