fix(navigation): ts2.4 compatibility

RoopeHakulinen · mhartington · commit 08be9dc58bee · 2017-07-10T15:29:25.000-04:00
Closes #12233. Closes #12235
diff --git a/src/navigation/nav-controller-base.ts b/src/navigation/nav-controller-base.ts
@@ -1174,7 +1174,7 @@ export class NavControllerBase extends Ion implements NavController {
     content && content.resize();
   }
 
-  goToRoot(_opts: NavOptions) {
+  goToRoot(_opts: NavOptions): Promise<any> {
     return Promise.reject(new Error('goToRoot needs to be implemented by child class'));
   }
 

Original file line number	Diff line number	Diff line change
`@@ -1174,7 +1174,7 @@ export class NavControllerBase extends Ion implements NavController {`
`1174`	`1174`	`content && content.resize();`
`1175`	`1175`	`}`
`1176`	`1176`
`1177`		`- goToRoot(_opts: NavOptions) {`
	`1177`	`+ goToRoot(_opts: NavOptions): Promise<any> {`
`1178`	`1178`	`return Promise.reject(new Error('goToRoot needs to be implemented by child class'));`
`1179`	`1179`	`}`
`1180`	`1180`