updated webpack.config

added configuration change to manager-webpack.config

enabled display error details feature

added in configuration change to stats

lib/core/src/server/dev-server.js

@@ -53,6 +53,7 @@ export default function(options) {
             error.error = err;
             error.close = true;
             error.stats = stats;
+            stats.toJson(options.errorDetails);
             logger.line();
             logger.line();
             try {