From 9c2d584170f7eec6574917d34e1acb916ec8c280 Mon Sep 17 00:00:00 2001
From: Phil Kunz <github@philkunz.com>
Date: Fri, 23 Nov 2018 19:26:41 +0100
Subject: [PATCH] fix(core): update

---
 ts/smarttime.classes.timer.ts | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/ts/smarttime.classes.timer.ts b/ts/smarttime.classes.timer.ts
index 448a98f..34754a0 100644
--- a/ts/smarttime.classes.timer.ts
+++ b/ts/smarttime.classes.timer.ts
@@ -61,9 +61,11 @@ export class Timer {
   }
 
   public pause() {
-    clearTimeout(this.currentTimeout);
-    this.currentTimeout = null;
-    this.pausedAt = TimeStamp.fromTimeStamp(this.startedAt);
+    if (this.startedAt) {
+      clearTimeout(this.currentTimeout);
+      this.currentTimeout = null;
+      this.pausedAt = TimeStamp.fromTimeStamp(this.startedAt);
+    }
   }
 
   public resume() {