From 7e6f3467cd530dd52e6d97e96ea254d7300d7db2 Mon Sep 17 00:00:00 2001
From: TaoWei <twchn@live.com>
Date: Sat, 7 Jul 2018 21:44:17 +0800
Subject: [PATCH] style: add white space

---
 chapter-01/rxjs/timingSenseTest.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chapter-01/rxjs/timingSenseTest.js b/chapter-01/rxjs/timingSenseTest.js
index 8f16c2a..2657834 100644
--- a/chapter-01/rxjs/timingSenseTest.js
+++ b/chapter-01/rxjs/timingSenseTest.js
@@ -3,7 +3,7 @@ const mouseDown$ = Rx.Observable.fromEvent(holdMeButton, 'mousedown');
 const mouseUp$ = Rx.Observable.fromEvent(holdMeButton, 'mouseup');
 
 const holdTime$ = mouseUp$.timestamp().withLatestFrom(mouseDown$.timestamp(), (mouseUpEvent, mouseDownEvent) => {
-  return mouseUpEvent.timestamp- mouseDownEvent.timestamp;
+  return mouseUpEvent.timestamp - mouseDownEvent.timestamp;
 });
 
 holdTime$.subscribe(ms => {