refactor(router): compile router cleanly with TypeScript 2.4 (#18465)

packages/router/src/router.ts

@@ -533,7 +533,7 @@ export class Router {
     let resolve: any = null;
     let reject: any = null;
 
-    const promise = new Promise((res, rej) => {
+    const promise = new Promise<boolean>((res, rej) => {
       resolve = res;
       reject = rej;
     });

packages/router/src/utils/collection.ts

@@ -116,5 +116,5 @@ export function wrapIntoObservable<T>(value: T | NgModuleFactory<T>| Promise<T>|
     return fromPromise(Promise.resolve(value));
   }
 
-  return of (value);
+  return of (value as T);
 }

packages/router/test/config.spec.ts

@@ -45,7 +45,7 @@ describe('config', () => {
       expect(() => {
         validateConfig([
           {path: 'a', component: ComponentA},
-          [{path: 'b', component: ComponentB}, {path: 'c', component: ComponentC}]
+          [{path: 'b', component: ComponentB}, {path: 'c', component: ComponentC}] as any
         ]);
       }).toThrowError(`Invalid configuration of route '': Array cannot be specified`);
     });

packages/router/test/integration.spec.ts

@@ -1820,7 +1820,7 @@ describe('Integration', () => {
 
         function delayPromise(delay: number): Promise<boolean> {
           let resolve: (val: boolean) => void;
-          const promise = new Promise(res => resolve = res);
+          const promise = new Promise<boolean>(res => resolve = res);
           setTimeout(() => resolve(true), delay);
           return promise;
         }