cleanup(router): fix tslint errors

modules/@angular/router/src/shared.ts

@@ -2,9 +2,11 @@
  * Name of the primary outlet.
  * @type {string}
  */
-export const PRIMARY_OUTLET: string = "PRIMARY_OUTLET";
+export const PRIMARY_OUTLET = 'PRIMARY_OUTLET';
 
 /**
  * A collection of parameters.
  */
-export type Params = { [key: string]: string };
+export type Params = {
+  [key: string]: string
+};