From 429889b672eab65cabaa78c89cffcad089067988 Mon Sep 17 00:00:00 2001
From: Bryan Bonnet <bryan@peeriq.com>
Date: Thu, 17 May 2018 15:13:09 -0400
Subject: [PATCH] fix(range): Range should be same for every subscriber

---
 spec/observables/range-spec.ts   | 15 +++++++++++++++
 src/internal/observable/range.ts |  3 ++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/spec/observables/range-spec.ts b/spec/observables/range-spec.ts
index 1b3c540fea..1bd7729064 100644
--- a/spec/observables/range-spec.ts
+++ b/spec/observables/range-spec.ts
@@ -31,6 +31,21 @@ describe('range', () => {
     expectObservable(e1).toBe(expected, values);
   });
 
+  it('should work for two subscribers', () => {
+    const e1 = range(1, 5)
+      .concatMap((x, i) => Observable.of(x).delay(i === 0 ? 0 : 20, rxTestScheduler));
+    const expected = 'a-b-c-d-(e|)';
+    const values = {
+      a: 1,
+      b: 2,
+      c: 3,
+      d: 4,
+      e: 5
+    };
+    expectObservable(e1).toBe(expected, values);
+    expectObservable(e1).toBe(expected, values);
+  });
+
   it('should synchronously create a range of values by default', () => {
     const results = [] as any[];
     range(12, 4).subscribe(function (x) {
diff --git a/src/internal/observable/range.ts b/src/internal/observable/range.ts
index c5793997d6..b3f14fde24 100644
--- a/src/internal/observable/range.ts
+++ b/src/internal/observable/range.ts
@@ -36,6 +36,7 @@ export function range(start: number = 0,
                       scheduler?: SchedulerLike): Observable<number> {
   return new Observable<number>(subscriber => {
     let index = 0;
+    let current = start;
 
     if (scheduler) {
       return scheduler.schedule(dispatch, 0, {
@@ -47,7 +48,7 @@ export function range(start: number = 0,
           subscriber.complete();
           break;
         }
-        subscriber.next(start++);
+        subscriber.next(current++);
         if (subscriber.closed) {
           break;
         }