build: enable TSLint on the packages folder (#18459)

porting PRs #18392 and #18441 to 4.x

packages/router/src/apply_redirects.ts

@@ -444,8 +444,11 @@ function match(segmentGroup: UrlSegmentGroup, route: Route, segments: UrlSegment
 
   if (!res) {
     return {
-      matched: false, consumedSegments: <any[]>[], lastChild: 0, positionalParamSegments: {},
-    }
+      matched: false,
+      consumedSegments: <any[]>[],
+      lastChild: 0,
+      positionalParamSegments: {},
+    };
   }
 
   return {

packages/router/src/router.ts

@@ -1128,7 +1128,7 @@ class ActivateRoutes {
       const children: {[outletName: string]: any} = nodeChildrenAsMap(route);
       const contexts = route.value.component ? context.children : parentContexts;
 
-      forEach(children, (v: any, k: string) => {this.deactivateRouteAndItsChildren(v, contexts)});
+      forEach(children, (v: any, k: string) => this.deactivateRouteAndItsChildren(v, contexts));
 
       if (context.outlet) {
         // Destroy the component

packages/router/src/utils/collection.ts

@@ -64,7 +64,7 @@ export function forEach<K, V>(map: {[key: string]: V}, callback: (v: V, k: strin
 export function waitForMap<A, B>(
     obj: {[k: string]: A}, fn: (k: string, a: A) => Observable<B>): Observable<{[k: string]: B}> {
   if (Object.keys(obj).length === 0) {
-    return of ({})
+    return of ({});
   }
 
   const waitHead: Observable<B>[] = [];

packages/router/test/integration.spec.ts

@@ -1070,7 +1070,7 @@ describe('Integration', () => {
                 return map.call(of (null), () => {
                   log.push('resolver2');
                   observer.next(null);
-                  observer.complete()
+                  observer.complete();
                 });
               }
             },