fix return types for .fetch() and .watch(), export additional types

Fixes rethinkdb#834

client/index.d.ts

@@ -2,37 +2,40 @@
 import { Observable } from 'rxjs';
 
 declare namespace hz {
+
+    interface Feed {
+        watch (options?: { rawChanges: boolean }): Observable<any>;
+        fetch (): Observable<any>;
+    }
+
     type Bound = 'open' | 'closed';
     type Direction = 'ascending' | 'descending';
     type Primitive = boolean | number | string | Date;
     type IdValue = Primitive | Primitive[] | { id: Primitive };
+    type WriteOp = Object | Object[];
 
-    interface TermBase {
-        watch (options?: { rawChanges: boolean }): TermBase;
-        fetch (): TermBase;
-
-        findAll (...values: IdValue[]): TermBase;
+    interface TermBase extends Feed {
         find (value: IdValue): TermBase;
+        findAll (...values: IdValue[]): TermBase;
 
         order (fields: string[], direction?: Direction): TermBase;
         limit (size: Number): TermBase;
         above (spec: any, bound?: Bound): TermBase;
         below (spec: any, bound?: Bound): TermBase;
     }
 
-    type WriteOp = Object | Object[];
-
     interface Collection extends TermBase {
         store (docs: WriteOp): Observable<any>;
         upsert (docs: WriteOp): Observable<any>;
         insert (docs: WriteOp): Observable<any>;
         replace (docs: WriteOp): Observable<any>;
         update (docs: WriteOp): Observable<any>;
+
         remove (docs: IdValue): Observable<any>;
-        remove (docs: IdValue[]): Observable<any>;
+        removeAll (docs: IdValue[]): Observable<any>;
     }
 
-    interface User extends TermBase {}
+    interface User extends Feed {}
 
     interface HorizonInstance {
         (name: string): Collection;
@@ -70,5 +73,11 @@ declare namespace hz {
     }
 }
 
+export type HorizonOptions = hz.HorizonOptions;
+export type HorizonInstance = hz.HorizonInstance;
+export type TermBase = hz.TermBase;
+export type Collection = hz.Collection;
+export type User = hz.User;
+
 declare var Horizon: hz.Horizon;
 export default Horizon;