style(docs-infra): Active tslint rule `semicolon` (#28282)

PR Close #28282

aio/src/app/app.component.spec.ts

@@ -52,7 +52,7 @@ describe('AppComponent', () => {
     await newDocPromise;       // Wait for the new document to be fetched.
     fixture.detectChanges();   // Propagate document change to the view (i.e to `DocViewer`).
     await docRenderedPromise;  // Wait for the `docRendered` event.
-  };
+  }
 
   function initializeTest(waitForDoc = true) {
     fixture = TestBed.createComponent(AppComponent);
@@ -73,7 +73,7 @@ describe('AppComponent', () => {
     tocService = de.injector.get<TocService>(TocService);
 
     return waitForDoc && awaitDocRendered();
-  };
+  }
 
 
   describe('with proper DocViewer', () => {

aio/src/app/custom-elements/api/api-list.component.ts

@@ -125,7 +125,7 @@ export class ApiListComponent implements OnInit {
         return status === 'all' ||
           status === item.stability ||
           (status === 'security-risk' && item.securityRisk);
-      };
+      }
 
       function matchesType() {
         return type === 'all' || type === item.docType;

aio/src/app/custom-elements/api/api.service.ts

@@ -54,7 +54,7 @@ export class ApiService implements OnDestroy {
             section.items.every(item => item.stability === 'deprecated');
       });
     }));
-  };
+  }
 
   constructor(private http: HttpClient, private logger: Logger) { }
 

aio/src/app/custom-elements/contributor/contributor-list.component.spec.ts

@@ -79,7 +79,7 @@ describe('ContributorListComponent', () => {
     return comp;
   }
 
-  interface SearchResult { [index: string]: string; };
+  interface SearchResult { [index: string]: string; }
 
   class TestLocationService {
     searchResult: SearchResult = {};

aio/src/app/custom-elements/elements-loader.spec.ts

@@ -245,7 +245,7 @@ class FakeComponentFactory extends ComponentFactory<any> {
          rootSelectorOrNode?: string | any,
          ngModule?: NgModuleRef<any>): ComponentRef<any> {
     return jasmine.createSpy('ComponentRef') as any;
-  };
+  }
 }
 
 class FakeComponentFactoryResolver extends ComponentFactoryResolver {

aio/src/app/custom-elements/getting-started/ng-for/ng-for.component.spec.ts

@@ -37,6 +37,6 @@ describe('Getting Started NgFor Component', () => {
 
     component.parseError$.subscribe(error => {
       expect(error).toBeTruthy();
-    })
+    });
   });
 });

aio/src/app/custom-elements/getting-started/ng-if/ng-if.component.spec.ts

@@ -46,6 +46,6 @@ describe('Getting Started NgIf Component', () => {
 
     component.parseError$.subscribe(error => {
       expect(error).toBeTruthy();
-    })
+    });
   });
 });

aio/src/app/custom-elements/resource/resource.service.ts

@@ -26,7 +26,7 @@ export class ResourceService {
 
     (categories as ConnectableObservable<Category[]>).connect();
     return categories;
-  };
+  }
 }
 
 // Extract sorted Category[] from resource JSON data

aio/src/app/shared/deployment.service.ts

@@ -14,4 +14,4 @@ export class Deployment {
   mode: string = this.location.search()['mode'] || environment.mode;
 
   constructor(private location: LocationService) {}
-};
+}

aio/tslint.json

@@ -75,6 +75,7 @@
     ],
     "radix": true,
     "semicolon": [
+      true,
       "always"
     ],
     "triple-equals": [