quiz init commit

services/LoggingService.js

@@ -0,0 +1,37 @@
+const winston = require("winston");
+winston.level = process.env.LOG_LEVEL;
+const tsFormat = () => new Date().toLocaleString();
+const logger = winston.createLogger({
+  level: "info",
+  format: winston.format.json(),
+  transports: [
+    //
+    // - Write to all logs with level `info` and below to `combined.log`
+    // - Write all logs error (and below) to `error.log`.
+    //
+    new winston.transports.File({
+      filename: "error.log",
+      level: "error",
+      timestamp: tsFormat,
+    }),
+    new winston.transports.File({
+      filename: "combined.log",
+      timestamp: tsFormat,
+    }),
+  ],
+});
+
+//
+// If we're not in production then log to the `console` with the format:
+// `${info.level}: ${info.message} JSON.stringify({ ...rest }) `
+if (process.env.NODE_ENV != "production") {
+  logger.add(
+    new winston.transports.Console({
+      format: winston.format.simple(),
+      timestamp: tsFormat,
+      colorize: true,
+    })
+  );
+}
+
+module.exports = logger;