winston:add winston logger support

Author: himanshuteotia

src/util/logger.ts

@@ -0,0 +1,18 @@
+import winston from 'winston';
+
+const options: winston.LoggerOptions = {
+  transports: [
+    new winston.transports.Console({
+      level: process.env.NODE_ENV === 'production' ? 'error' : 'debug'
+    }),
+    new winston.transports.File({ filename: 'debug.log', level: 'debug' })
+  ]
+};
+
+const logger = winston.createLogger(options);
+
+if (process.env.NODE_ENV !== 'production') {
+  logger.debug('Logging initialized at debug level');
+}
+
+export default logger;