add ignore log prod error code < 400

src/helpers/express/morgan.ts

@@ -4,6 +4,12 @@ import express from 'express';
 
 export class MorganHelper {
     static setup(app: express.Application) {
+        if (process.env.NODE_ENV == 'prod') {
+            app.use(morgan(config.get('server.morgan'), {
+                skip: function (req, res) { return res.statusCode < 400 }
+            }));
+        } else {
             app.use(morgan(config.get('server.morgan')));
         }
     }
+}