init

lib/logger.ts

@@ -0,0 +1,40 @@
+import * as fs from 'fs';
+import * as winston from 'winston';
+import 'winston-daily-rotate-file';
+
+const logDir: string = process.env.LOG_DIR || 'log';
+
+if (!fs.existsSync(logDir)) {
+  fs.mkdirSync(logDir, { recursive: true });
+}
+
+const fileTransport = new winston.transports.DailyRotateFile({
+  filename: `${logDir}/%DATE%-results.log`,
+  datePattern: 'YYYY-MM-DD',
+  zippedArchive: true,
+  maxSize: '20m',
+  maxFiles: '3d',
+  level: 'info',
+});
+
+const logger: winston.Logger = winston.createLogger({
+  level: 'debug',
+  format: winston.format.combine(
+    winston.format.timestamp({
+      format: 'YYYY-MM-DD HH:mm:ss'
+    }),
+    winston.format.json()
+  ),
+  transports: [
+    fileTransport,
+    new winston.transports.Console({
+      level: 'debug',
+      format: winston.format.combine(
+        winston.format.colorize(),
+        winston.format.simple()
+      )
+    })
+  ]
+});
+
+export default logger;