feat(core): upgrade rxjs to 6.0.0-alpha.4 (#22573)

PR Close #22573

packages/common/http/src/backend.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Observable} from 'rxjs/Observable';
+import {Observable} from 'rxjs';
 import {HttpRequest} from './request';
 import {HttpEvent} from './response';
 

packages/common/http/src/client.ts

@@ -7,11 +7,8 @@
  */
 
 import {Injectable} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
-import {of } from 'rxjs/observable/of';
-import {concatMap} from 'rxjs/operator/concatMap';
-import {filter} from 'rxjs/operator/filter';
-import {map} from 'rxjs/operator/map';
+import {Observable, of } from 'rxjs';
+import {concatMap, filter, map} from 'rxjs/operators';
 
 import {HttpHandler} from './backend';
 import {HttpHeaders} from './headers';
@@ -384,7 +381,7 @@ export class HttpClient {
     // inside an Observable chain, which causes interceptors to be re-run on every
     // subscription (this also makes retries re-run the handler, including interceptors).
     const events$: Observable<HttpEvent<any>> =
-        concatMap.call(of (req), (req: HttpRequest<any>) => this.handler.handle(req));
+        of (req).pipe(concatMap((req: HttpRequest<any>) => this.handler.handle(req)));
 
     // If coming via the API signature which accepts a previously constructed HttpRequest,
     // the only option is to get the event stream. Otherwise, return the event stream if
@@ -396,8 +393,8 @@ export class HttpClient {
     // The requested stream contains either the full response or the body. In either
     // case, the first step is to filter the event stream to extract a stream of
     // responses(s).
-    const res$: Observable<HttpResponse<any>> =
-        filter.call(events$, (event: HttpEvent<any>) => event instanceof HttpResponse);
+    const res$: Observable<HttpResponse<any>> = <Observable<HttpResponse<any>>>events$.pipe(
+        filter((event: HttpEvent<any>) => event instanceof HttpResponse));
 
     // Decide which stream to return.
     switch (options.observe || 'body') {
@@ -409,33 +406,33 @@ export class HttpClient {
         // requested type.
         switch (req.responseType) {
           case 'arraybuffer':
-            return map.call(res$, (res: HttpResponse<any>) => {
+            return res$.pipe(map((res: HttpResponse<any>) => {
               // Validate that the body is an ArrayBuffer.
               if (res.body !== null && !(res.body instanceof ArrayBuffer)) {
                 throw new Error('Response is not an ArrayBuffer.');
               }
               return res.body;
-            });
+            }));
           case 'blob':
-            return map.call(res$, (res: HttpResponse<any>) => {
+            return res$.pipe(map((res: HttpResponse<any>) => {
               // Validate that the body is a Blob.
               if (res.body !== null && !(res.body instanceof Blob)) {
                 throw new Error('Response is not a Blob.');
               }
               return res.body;
-            });
+            }));
           case 'text':
-            return map.call(res$, (res: HttpResponse<any>) => {
+            return res$.pipe(map((res: HttpResponse<any>) => {
               // Validate that the body is a string.
               if (res.body !== null && typeof res.body !== 'string') {
                 throw new Error('Response is not a string.');
               }
               return res.body;
-            });
+            }));
           case 'json':
           default:
             // No validation needed for JSON responses, as they can be of any type.
-            return map.call(res$, (res: HttpResponse<any>) => res.body);
+            return res$.pipe(map((res: HttpResponse<any>) => res.body));
         }
       case 'response':
         // The response stream was requested directly, so return it.

packages/common/http/src/interceptor.ts

@@ -7,7 +7,7 @@
  */
 
 import {Injectable, InjectionToken} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
+import {Observable} from 'rxjs';
 
 import {HttpHandler} from './backend';
 import {HttpRequest} from './request';

packages/common/http/src/jsonp.ts

@@ -7,9 +7,8 @@
  */
 
 import {DOCUMENT} from '@angular/common';
-import {Inject, Injectable, InjectionToken} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
-import {Observer} from 'rxjs/Observer';
+import {Inject, Injectable} from '@angular/core';
+import {Observable, Observer} from 'rxjs';
 
 import {HttpBackend, HttpHandler} from './backend';
 import {HttpRequest} from './request';

packages/common/http/src/module.ts

@@ -6,8 +6,8 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {Injectable, Injector, ModuleWithProviders, NgModule, Optional} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
+import {Injectable, Injector, ModuleWithProviders, NgModule} from '@angular/core';
+import {Observable} from 'rxjs';
 
 import {HttpBackend, HttpHandler} from './backend';
 import {HttpClient} from './client';

packages/common/http/src/xhr.ts

@@ -7,8 +7,7 @@
  */
 
 import {Injectable} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
-import {Observer} from 'rxjs/Observer';
+import {Observable, Observer} from 'rxjs';
 
 import {HttpBackend} from './backend';
 import {HttpHeaders} from './headers';

packages/common/http/src/xsrf.ts

@@ -8,7 +8,7 @@
 
 import {DOCUMENT, ɵparseCookieValue as parseCookieValue} from '@angular/common';
 import {Inject, Injectable, InjectionToken, PLATFORM_ID} from '@angular/core';
-import {Observable} from 'rxjs/Observable';
+import {Observable} from 'rxjs';
 
 import {HttpHandler} from './backend';
 import {HttpInterceptor} from './interceptor';