From 8bf815e8c0cc8544ea41bf435b41979de7619388 Mon Sep 17 00:00:00 2001
From: Maciej Chmielarski <m.chmielarski@gmail.com>
Date: Thu, 11 Feb 2016 09:11:33 +0100
Subject: [PATCH] fix(typings): set map function parameter for Observable.from
 as optional

without this change typescript returns TS2346 error
when we use Observable.from with one parameter.

I think that it will be nice if tests will be written in typescript
because it will eliminate situations like this.
---
 src/observable/FromObservable.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/observable/FromObservable.ts b/src/observable/FromObservable.ts
index be9a0db618..ef54497e6d 100644
--- a/src/observable/FromObservable.ts
+++ b/src/observable/FromObservable.ts
@@ -20,7 +20,7 @@ export class FromObservable<T> extends Observable<T> {
     super(null);
   }
 
-  static create<T>(ish: any, mapFnOrScheduler: Scheduler | ((x: any, y: number) => T), thisArg?: any, lastScheduler?: Scheduler): Observable<T> {
+  static create<T>(ish: any, mapFnOrScheduler?: Scheduler | ((x: any, y: number) => T), thisArg?: any, lastScheduler?: Scheduler): Observable<T> {
     let scheduler: Scheduler = null;
     let mapFn: (x: number, y: any) => T = null;
     if (isFunction(mapFnOrScheduler)) {