fix use before definition

lib/log.js

@@ -79,6 +79,9 @@ Logger.create = function (config, cb) {
         config.logLevel = 'info';
     }
 
+    var date = new Date();
+    var launchTime = ('' + date.getUTCFullYear()).slice(-2) + date.toISOString();
+
     var ctx = {
         channelName: launchTime,
         logFeedback: Boolean(config.logFeedback),
@@ -90,9 +93,6 @@ Logger.create = function (config, cb) {
         return void cb(Object.freeze(createMethods(ctx)));
     }
 
-    var date = new Date();
-    var launchTime = ('' + date.getUTCFullYear()).slice(-2) + date.toISOString();
-
     Store.create({
         filePath: config.logPath,
     }, function (store) {