refactor(router): cleanup RouterLink

modules/@angular/router/src/directives/router_link.ts

@@ -14,33 +14,23 @@ import {NavigationEnd, Router} from '../router';
 import {ActivatedRoute} from '../router_state';
 import {UrlTree} from '../url_tree';
 
-
 /**
  * @whatItDoes Lets you link to specific parts of your app.
  *
  * @howToUse
  *
  * Consider the following route configuration:
-
- * ```
- * [{ path: 'user/:name', component: UserCmp }]
- * ```
+ * `[{ path: 'user/:name', component: UserCmp }]`
  *
  * When linking to this `user/:name` route, you can write:
- *
- * ```
- * <a routerLink='/user/bob'>link to user component</a>
- * ```
+ * `<a routerLink='/user/bob'>link to user component</a>`
  *
  * @description
  *
  * The RouterLink directives let you link to specific parts of your app.
  *
  * Whe the link is static, you can use the directive as follows:
- *
- * ```
- * <a routerLink="/user/bob">link to user component</a>
- * ```
+ * `<a routerLink="/user/bob">link to user component</a>`
  *
  * If you use dynamic values to generate the link, you can pass an array of path
  * segments, followed by the params for each segment.
@@ -48,29 +38,31 @@ import {UrlTree} from '../url_tree';
  * For instance `['/team', teamId, 'user', userName, {details: true}]`
  * means that we want to generate a link to `/team/11/user/bob;details=true`.
  *
- * Multiple static segments can be merged into one (e.g., `['/team/11/user', userName, {details:
- true}]`).
+ * Multiple static segments can be merged into one
+ * (e.g., `['/team/11/user', userName, {details: true}]`).
  *
  * The first segment name can be prepended with `/`, `./`, or `../`:
  * * If the first segment begins with `/`, the router will look up the route from the root of the
- app.
+ *   app.
  * * If the first segment begins with `./`, or doesn't begin with a slash, the router will
- * instead look in the children of the current activated route.
+ *   instead look in the children of the current activated route.
  * * And if the first segment begins with `../`, the router will go up one level.
  *
  * You can set query params and fragment as follows:
  *
  * ```
- * <a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" fragment="education">link to user
- component</a>
+ * <a [routerLink]="['/user/bob']" [queryParams]="{debug: true}" fragment="education">
+ *   link to user component
+ * </a>
  * ```
  * RouterLink will use these to generate this link: `/user/bob#education?debug=true`.
  *
  * You can also tell the directive to preserve the current query params and fragment:
  *
  * ```
- * <a [routerLink]="['/user/bob']" preserveQueryParams preserveFragment>link to user
- component</a>
+ * <a [routerLink]="['/user/bob']" preserveQueryParams preserveFragment>
+ *   link to user component
+ * </a>
  * ```
  *
  * The router link directive always treats the provided input as a delta to the current url.
@@ -97,9 +89,7 @@ export class RouterLink {
   @Input() replaceUrl: boolean;
   private commands: any[] = [];
 
-  constructor(
-      private router: Router, private route: ActivatedRoute,
-      private locationStrategy: LocationStrategy) {}
+  constructor(private router: Router, private route: ActivatedRoute) {}
 
   @Input()
   set routerLink(data: any[]|string) {
@@ -144,7 +134,6 @@ export class RouterLinkWithHref implements OnChanges, OnDestroy {
   @Input() target: string;
   @Input() queryParams: {[k: string]: any};
   @Input() fragment: string;
-  @Input() routerLinkOptions: {preserveQueryParams: boolean, preserveFragment: boolean};
   @Input() preserveQueryParams: boolean;
   @Input() preserveFragment: boolean;
   @Input() skipLocationChange: boolean;
@@ -208,7 +197,6 @@ export class RouterLinkWithHref implements OnChanges, OnDestroy {
   }
 }
 
-function toBool(s?: any): boolean {
-  if (s === '') return true;
-  return !!s;
+function toBool(s: any): boolean {
+  return s === '' || !!s;
 }

modules/@angular/router/test/integration.spec.ts

@@ -700,27 +700,25 @@ describe('Integration', () => {
      })));
 
   it('should not deactivate aux routes when navigating from a componentless routes',
-     fakeAsync(inject(
-         [Router, Location, NgModuleFactoryLoader],
-         (router: Router, location: Location, loader: SpyNgModuleFactoryLoader) => {
-           const fixture = createRoot(router, TwoOutletsCmp);
+     fakeAsync(inject([Router, Location], (router: Router, location: Location) => {
+       const fixture = createRoot(router, TwoOutletsCmp);
 
-           router.resetConfig([
-             {path: 'simple', component: SimpleCmp},
-             {path: 'componentless', children: [{path: 'simple', component: SimpleCmp}]},
-             {path: 'user/:name', outlet: 'aux', component: UserCmp}
-           ]);
+       router.resetConfig([
+         {path: 'simple', component: SimpleCmp},
+         {path: 'componentless', children: [{path: 'simple', component: SimpleCmp}]},
+         {path: 'user/:name', outlet: 'aux', component: UserCmp}
+       ]);
 
-           router.navigateByUrl('/componentless/simple(aux:user/victor)');
-           advance(fixture);
-           expect(location.path()).toEqual('/componentless/simple(aux:user/victor)');
-           expect(fixture.nativeElement).toHaveText('[ simple, aux: user victor ]');
+       router.navigateByUrl('/componentless/simple(aux:user/victor)');
+       advance(fixture);
+       expect(location.path()).toEqual('/componentless/simple(aux:user/victor)');
+       expect(fixture.nativeElement).toHaveText('[ simple, aux: user victor ]');
 
-           router.navigateByUrl('/simple(aux:user/victor)');
-           advance(fixture);
-           expect(location.path()).toEqual('/simple(aux:user/victor)');
-           expect(fixture.nativeElement).toHaveText('[ simple, aux: user victor ]');
-         })));
+       router.navigateByUrl('/simple(aux:user/victor)');
+       advance(fixture);
+       expect(location.path()).toEqual('/simple(aux:user/victor)');
+       expect(fixture.nativeElement).toHaveText('[ simple, aux: user victor ]');
+     })));
 
   it('should emit an event when an outlet gets activated', fakeAsync(() => {
        @Component({
@@ -766,7 +764,7 @@ describe('Integration', () => {
      }));
 
   it('should update url and router state before activating components',
-     fakeAsync(inject([Router, Location], (router: Router, location: Location) => {
+     fakeAsync(inject([Router], (router: Router) => {
 
        const fixture = createRoot(router, RootCmp);
 
@@ -843,8 +841,7 @@ describe('Integration', () => {
          ]);
        })));
 
-    it('should handle errors',
-       fakeAsync(inject([Router, Location], (router: Router, location: Location) => {
+    it('should handle errors', fakeAsync(inject([Router], (router: Router) => {
          const fixture = createRoot(router, RootCmp);
 
          router.resetConfig(
@@ -865,8 +862,7 @@ describe('Integration', () => {
          expect(e).toEqual('error');
        })));
 
-    it('should preserve resolved data',
-       fakeAsync(inject([Router, Location], (router: Router, location: Location) => {
+    it('should preserve resolved data', fakeAsync(inject([Router], (router: Router) => {
          const fixture = createRoot(router, RootCmp);
 
          router.resetConfig([{
@@ -890,7 +886,7 @@ describe('Integration', () => {
        })));
 
     it('should rerun resolvers when the urls segments of a wildcard route change',
-       fakeAsync(inject([Router, Location], (router: Router, location: Location) => {
+       fakeAsync(inject([Router, Location], (router: Router) => {
          const fixture = createRoot(router, RootCmp);
 
          router.resetConfig([{
@@ -899,7 +895,6 @@ describe('Integration', () => {
            resolve: {numberOfUrlSegments: 'numberOfUrlSegments'}
          }]);
 
-         const e: any = null;
          router.navigateByUrl('/one/two');
          advance(fixture);
          const cmp = fixture.debugElement.children[1].componentInstance;