fix: improve types for instance (#655)

Author: JustinBeckwith

handwritten/bigtable/src/app-profile.ts

@@ -100,6 +100,15 @@ export type GetAppProfileResponse = [
   AppProfile,
   google.bigtable.admin.v2.IAppProfile
 ];
+export type GetAppProfilesCallback = (
+  err: ServiceError | null,
+  appProfiles?: AppProfile[],
+  apiResponse?: google.bigtable.admin.v2.IAppProfile[]
+) => void;
+export type GetAppProfilesResponse = [
+  AppProfile[],
+  google.bigtable.admin.v2.IAppProfile[]
+];
 export type SetAppProfileMetadataCallback = (
   err: ServiceError | null,
   apiResponse?: google.protobuf.Empty

handwritten/bigtable/src/cluster.ts

@@ -18,7 +18,7 @@ import {promisifyAll} from '@google-cloud/promisify';
 import {CallOptions, Operation as GaxOperation} from 'google-gax';
 import {ServiceError} from '@grpc/grpc-js';
 
-import {google as btTypes} from '../protos/protos';
+import {google} from '../protos/protos';
 import {Bigtable} from '.';
 import {Instance} from './instance';
 
@@ -40,20 +40,26 @@ export interface GenericOperationCallback<T> {
   ): void;
 }
 
-export type IEmpty = btTypes.protobuf.IEmpty;
-export type ICluster = btTypes.bigtable.admin.v2.ICluster;
-export type IOperation = btTypes.longrunning.IOperation;
+export type IEmpty = google.protobuf.IEmpty;
+export type ICluster = google.bigtable.admin.v2.ICluster;
+export type IOperation = google.longrunning.IOperation;
 
 export type ApiResponse = [IOperation];
 export type CreateClusterResponse = [ICluster, GaxOperation, IOperation];
 export type BooleanResponse = [boolean];
 export type GetClusterResponse = [ICluster, IOperation];
+export type GetClustersResponse = [ICluster[], IOperation];
 export type MetadataResponse = [Metadata, IOperation];
 
 export type CreateClusterCallback = GenericCallback<IOperation>;
 export type DeleteClusterCallback = GenericCallback<IOperation>;
 export type ExistsClusterCallback = GenericCallback<boolean>;
 export type GetClusterCallback = GenericClusterCallback<ICluster>;
+export type GetClustersCallback = (
+  err: ServiceError | null,
+  clusters?: ICluster[],
+  apiResponse?: google.bigtable.admin.v2.IListClustersResponse
+) => void;
 export type SetClusterMetadataCallback = GenericOperationCallback<IOperation>;
 
 export interface CreateClusterOptions {