From 31de1cb1334bf3eee033d30b73fd892ba517a45a Mon Sep 17 00:00:00 2001
From: Darren Nelsen <darren@bitpay.com>
Date: Thu, 26 Apr 2018 15:37:46 -0400
Subject: [PATCH] fix memory leak by clearing interval on destroy hook

---
 app/src/components/latest-blocks/latest-blocks.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/src/components/latest-blocks/latest-blocks.ts b/app/src/components/latest-blocks/latest-blocks.ts
index 00dc06e..ed65f6c 100644
--- a/app/src/components/latest-blocks/latest-blocks.ts
+++ b/app/src/components/latest-blocks/latest-blocks.ts
@@ -20,17 +20,19 @@ export class LatestBlocksComponent {
   @Input() public numBlocks: number;
   @Input() public showAllBlocksButton: boolean;
   @Input() public showTimeAs: string;
+  private reloadInterval: any;
 
   constructor(private blocksProvider: BlocksProvider, private navCtrl: NavController, ngZone: NgZone) {
     this.loadBlocks();
+    const seconds: number = 15;
     ngZone.runOutsideAngular(() => {
-      setInterval(
+      this.reloadInterval = setInterval(
         function (): void {
           ngZone.run(function (): void {
             this.loadBlocks.call(this);
           }.bind(this));
         }.bind(this),
-        1000 * 30
+        1000 * seconds
       );
     });
   }
@@ -63,4 +65,8 @@ export class LatestBlocksComponent {
   public goToBlocks(): void {
     this.navCtrl.push(BlocksPage);
   }
+
+  private ngOnDestroy(): void {
+    clearInterval(this.reloadInterval);
+  }
 }