From 9cd80cbfe81954b79ea23a8923ff14de702dccff Mon Sep 17 00:00:00 2001
From: Adam Bradley <adambradley25@gmail.com>
Date: Wed, 1 Jun 2016 22:19:09 -0500
Subject: [PATCH] chore(nav): add promise rejects to popTo

---
 src/components/nav/nav-controller.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/components/nav/nav-controller.ts b/src/components/nav/nav-controller.ts
index 1cde1f0820..61b391bfca 100644
--- a/src/components/nav/nav-controller.ts
+++ b/src/components/nav/nav-controller.ts
@@ -745,6 +745,10 @@ export class NavController extends Ion {
    */
   popTo(view: ViewController, opts?: NavOptions): Promise<any> {
     let startIndex = this.indexOf(view);
+    if (startIndex < 0) {
+      return Promise.reject('View not found to pop to');
+    }
+
     let activeView = this.getByState(STATE_TRANS_ENTER) ||
                      this.getByState(STATE_INIT_ENTER) ||
                      this.getActive();