From a1986db73aa3487f2f814189dd75b7c7320de01e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jan=20Buscht=C3=B6ns?= <buschtoens@gmail.com>
Date: Mon, 24 Aug 2020 17:53:55 +0200
Subject: [PATCH] feat(Transition): expose `previousTransition`

---
 lib/router/transition.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/router/transition.ts b/lib/router/transition.ts
index 43cd3264..f429f49c 100644
--- a/lib/router/transition.ts
+++ b/lib/router/transition.ts
@@ -64,6 +64,7 @@ export default class Transition<T extends Route> implements Partial<Promise<T>>
   isCausedByInitialTransition = false;
   isCausedByAbortingReplaceTransition = false;
   _visibleQueryParams: Dict<unknown> = {};
+  previousTransition: Maybe<Transition<T>>;
 
   constructor(
     router: Router<T>,
@@ -85,6 +86,7 @@ export default class Transition<T extends Route> implements Partial<Promise<T>>
     this.targetName = undefined;
     this.pivotHandler = undefined;
     this.sequence = -1;
+    this.previousTransition = previousTransition;
 
     if (error) {
       this.promise = Promise.reject(error);