Cast to any is no longer necessary, string enums are supported as of typescript 2.4

src/app/core/data/remote-data.ts

@@ -3,10 +3,10 @@ import { Observable } from 'rxjs/Observable';
 import { PageInfo } from '../shared/page-info.model';
 
 export enum RemoteDataState {
-  RequestPending = 'RequestPending' as any,
-  ResponsePending = 'ResponsePending' as any,
-  Failed = 'Failed' as any,
-  Success = 'Success' as any
+  RequestPending = 'RequestPending',
+  ResponsePending = 'ResponsePending',
+  Failed = 'Failed',
+  Success = 'Success'
 }
 
 /**

src/app/core/shared/resource-type.ts

@@ -3,10 +3,10 @@
  * https://github.com/Microsoft/TypeScript/pull/15486
  */
 export enum ResourceType {
-  Bundle = 'bundle' as any,
-  Bitstream = 'bitstream' as any,
-  BitstreamFormat = 'bitstreamformat' as any,
-  Item = 'item' as any,
-  Collection = 'collection' as any,
-  Community = 'community' as any,
+  Bundle = 'bundle',
+  Bitstream = 'bitstream',
+  BitstreamFormat = 'bitstreamformat',
+  Item = 'item',
+  Collection = 'collection',
+  Community = 'community',
 }