minor change to #6904

tasks/options/exec.js

@@ -2,6 +2,6 @@ module.exports = function(config) {
   'use strict'
   return {
     tslint : "node ./node_modules/tslint/lib/tslint-cli.js -c tslint.json --project ./tsconfig.json",
-    tscompile: "node ./node_modules/typescript/lib/tsc.js -p tsconfig.json" 
+    tscompile: "node ./node_modules/typescript/lib/tsc.js -p tsconfig.json --diagnostics"
   };
 };