Remove milliseconds and time zone offset in logs

PR-URL: #172

Author: tshemsedinov

lib/logger.js

@@ -8,6 +8,8 @@ const COLORS = {
   error: '\x1b[0;31m',
 };
 
+const DATETIME_LENGTH = 19;
+
 class Logger {
   constructor(logPath, threadId = 0) {
     this.path = logPath;
@@ -18,7 +20,8 @@ class Logger {
   }
 
   write(level = 'info', s) {
-    const date = new Date().toISOString();
+    const now = new Date().toISOString();
+    const date = now.substring(0, DATETIME_LENGTH);
     const color = COLORS[level];
     const line = date + '\t' + s;
     console.log(color + line + '\x1b[0m');