upd

server/src/utils/logger.ts

@@ -0,0 +1,27 @@
+import * as winston from "winston";
+
+const { combine, timestamp, json } = winston.format;
+
+export const logger = winston.createLogger({
+  level: "info",
+  format: combine(
+    timestamp({
+      format: "YYYY-MM-DD hh:mm:ss.SSS A",
+    }),
+    json()
+  ),
+  transports: [
+    //
+    // - Write to all logs with level `debug` and below to `all.log`
+    // - Write all logs error (and below) to `error.log`.
+    //
+    new winston.transports.File({
+      filename: "logs/error.log",
+      level: "error",
+    }),
+    new winston.transports.File({
+      filename: "logs/all.log",
+      level: "debug",
+    }),
+  ],
+});