Strict null auto add

src/tsconfig.strictNullChecks.json

@@ -243,13 +243,17 @@
 		"./vs/editor/contrib/rename/renameInputField.ts",
 		"./vs/editor/contrib/snippet/snippetController2.ts",
 		"./vs/editor/contrib/snippet/snippetParser.ts",
+		"./vs/editor/contrib/snippet/snippetSession.ts",
 		"./vs/editor/contrib/snippet/snippetVariables.ts",
+		"./vs/editor/contrib/snippet/test/snippetController2.old.test.ts",
+		"./vs/editor/contrib/snippet/test/snippetController2.test.ts",
 		"./vs/editor/contrib/snippet/test/snippetParser.test.ts",
 		"./vs/editor/contrib/snippet/test/snippetVariables.test.ts",
 		"./vs/editor/contrib/suggest/completionModel.ts",
 		"./vs/editor/contrib/suggest/suggest.ts",
 		"./vs/editor/contrib/suggest/suggestAlternatives.ts",
 		"./vs/editor/contrib/suggest/suggestMemory.ts",
+		"./vs/editor/contrib/suggest/suggestModel.ts",
 		"./vs/editor/contrib/suggest/suggestWidget.ts",
 		"./vs/editor/contrib/suggest/test/completionModel.test.ts",
 		"./vs/editor/contrib/suggest/test/suggest.test.ts",
@@ -874,4 +878,4 @@
 	"exclude": [
 		"./typings/require-monaco.d.ts"
 	]
-}
+}
\ No newline at end of file