From 61ce2f9e3d1a408d8c8f6b0494d5b0e0687d0beb Mon Sep 17 00:00:00 2001
From: Ajay Bura <32841439+ajbura@users.noreply.github.com>
Date: Thu, 3 Mar 2022 15:36:25 +0530
Subject: [PATCH 1/2] Add observeNavigation in ViewModel

---
 src/domain/ViewModel.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/domain/ViewModel.ts b/src/domain/ViewModel.ts
index cfe22326..04fec86e 100644
--- a/src/domain/ViewModel.ts
+++ b/src/domain/ViewModel.ts
@@ -58,6 +58,14 @@ export class ViewModel<O extends Options = Options> extends EventEmitter<{change
         return this._options[name];
     }
 
+    observeNavigation(type: string, onChange: (value: true | string, type: string) => void) {
+      const segmentObservable = this.navigation.observe(type);
+      const unsubscribe = segmentObservable.subscribe((value: true | string) => {
+        onChange(value, type);
+      })
+      this.track(unsubscribe);
+    }
+
     track<D extends Disposable>(disposable: D): D {
         if (!this.disposables) {
             this.disposables = new Disposables();

From e07abfa02a543f1ddc9515d039f3fe56f81b5b88 Mon Sep 17 00:00:00 2001
From: Ajay Bura <32841439+ajbura@users.noreply.github.com>
Date: Mon, 7 Mar 2022 11:33:51 +0530
Subject: [PATCH 2/2] Add missing type

---
 src/domain/ViewModel.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/domain/ViewModel.ts b/src/domain/ViewModel.ts
index 04fec86e..8b8581ae 100644
--- a/src/domain/ViewModel.ts
+++ b/src/domain/ViewModel.ts
@@ -58,9 +58,9 @@ export class ViewModel<O extends Options = Options> extends EventEmitter<{change
         return this._options[name];
     }
 
-    observeNavigation(type: string, onChange: (value: true | string, type: string) => void) {
+    observeNavigation(type: string, onChange: (value: string | true | undefined, type: string) => void) {
       const segmentObservable = this.navigation.observe(type);
-      const unsubscribe = segmentObservable.subscribe((value: true | string) => {
+      const unsubscribe = segmentObservable.subscribe((value: string | true | undefined) => {
         onChange(value, type);
       })
       this.track(unsubscribe);