refactor: Expand Types

Author: d-goog

src/auth/authclient.ts

@@ -17,7 +17,7 @@ import {Gaxios, GaxiosOptions, GaxiosPromise, GaxiosResponse} from 'gaxios';
 
 import {DefaultTransporter, Transporter} from '../transporters';
 import {Credentials} from './credentials';
-import {Headers} from './oauth2client';
+import {GetAccessTokenResponse, Headers} from './oauth2client';
 import {OriginalAndCamel, originalOrCamelOptions} from '../util';
 
 /**
@@ -128,10 +128,7 @@ export interface CredentialsClient {
    * @return A promise that resolves with the current GCP access token
    *   response. If the current credential is expired, a new one is retrieved.
    */
-  getAccessToken(): Promise<{
-    token?: string | null;
-    res?: GaxiosResponse | null;
-  }>;
+  getAccessToken(): Promise<GetAccessTokenResponse>;
 
   /**
    * The main authentication interface. It takes an optional url which when

src/auth/passthrough.ts

@@ -14,6 +14,7 @@
 
 import {GaxiosOptions} from 'gaxios';
 import {AuthClient} from './authclient';
+import {GetAccessTokenResponse, Headers} from './oauth2client';
 
 /**
  * An AuthClient without any Authentication information. Useful for:
@@ -44,7 +45,7 @@ export class PassThroughClient extends AuthClient {
    *
    * @returns {}
    */
-  async getAccessToken() {
+  async getAccessToken(): Promise<GetAccessTokenResponse> {
     return {};
   }
 
@@ -54,7 +55,11 @@ export class PassThroughClient extends AuthClient {
    *
    * @returns {}
    */
-  async getRequestHeaders() {
+  async getRequestHeaders(): Promise<Headers> {
     return {};
   }
 }
+
+const a = new PassThroughClient();
+
+a.getAccessToken();