refactoring logs: use winston

server/log.js

@@ -1 +1,16 @@
-module.exports = process.winstonLog
+const { createLogger, transports, format } = require('winston')
+
+const logger = createLogger({
+  transports: process.env.NODE_ENV !== 'production'
+    ? [new transports.Console(
+        { level: 'debug', format: format.combine(format.colorize(), format.simple(), format.errors({ stack: true })) }
+      )]
+    : [new transports.File(
+        {
+          filename: 'gancio.log',
+          format: format.combine(format.simple(), format.errors({ stack: true }))
+        }
+      )]
+})
+
+module.exports = logger