From 9b7083332be55f5758dbb05633fd3e772395c0ba Mon Sep 17 00:00:00 2001
From: Michel Weststrate <mweststrate@gmail.com>
Date: Wed, 28 Feb 2018 16:37:17 +0100
Subject: [PATCH] Merged #817

---
 src/api/observe.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/api/observe.ts b/src/api/observe.ts
index 76c209e25..6bc598fa5 100644
--- a/src/api/observe.ts
+++ b/src/api/observe.ts
@@ -33,10 +33,10 @@ export function observe(
     listener: (change: IObjectChange) => void,
     fireImmediately?: boolean
 ): Lambda
-export function observe(
-    object: Object,
-    property: string,
-    listener: (change: IValueDidChange<any>) => void,
+export function observe<T, K extends keyof T>(
+    object: T,
+    property: K,
+    listener: (change: IValueDidChange<T[K]>) => void,
     fireImmediately?: boolean
 ): Lambda
 export function observe(thing, propOrCb?, cbOrFire?, fireImmediately?): Lambda {