refactor!: Move Base AuthClient Types to authclient.ts (#1774)

* refactor!: Move Base AuthClient Types to authclient.ts

* style: Fix lints

* chore: merge conflict

---------

Co-authored-by: d-goog <[email protected]>
Co-authored-by: Daniel Bankhead <[email protected]>

Author: HubertJan

src/auth/authclient.ts

@@ -17,7 +17,6 @@ import {Gaxios, GaxiosOptions, GaxiosPromise, GaxiosResponse} from 'gaxios';
 
 import {DefaultTransporter, Transporter} from '../transporters';
 import {Credentials} from './credentials';
-import {GetAccessTokenResponse, Headers} from './oauth2client';
 import {OriginalAndCamel, originalOrCamelOptions} from '../util';
 
 /**
@@ -307,3 +306,12 @@ export abstract class AuthClient
     };
   }
 }
+
+export interface Headers {
+  [index: string]: string;
+}
+
+export interface GetAccessTokenResponse {
+  token?: string | null;
+  res?: GaxiosResponse | null;
+}

src/auth/awsclient.ts

@@ -18,6 +18,7 @@ import {
   BaseExternalAccountClientOptions,
   ExternalAccountSupplierContext,
 } from './baseexternalclient';
+
 import {AuthClientOptions} from './authclient';
 import {DefaultAwsSecurityCredentialsSupplier} from './defaultawssecuritycredentialssupplier';
 import {originalOrCamelOptions, SnakeToCamelObject} from '../util';

src/auth/awsrequestsigner.ts

@@ -14,7 +14,7 @@
 
 import {GaxiosOptions} from 'gaxios';
 
-import {Headers} from './oauth2client';
+import {Headers} from './authclient';
 import {Crypto, createCrypto, fromArrayBufferToHex} from '../crypto/crypto';
 
 type HttpMethod =

src/auth/baseexternalclient.ts

@@ -22,9 +22,13 @@ import {
 import * as stream from 'stream';
 
 import {Credentials} from './credentials';
-import {AuthClient, AuthClientOptions} from './authclient';
+import {
+  AuthClient,
+  AuthClientOptions,
+  GetAccessTokenResponse,
+  Headers,
+} from './authclient';
 import {BodyResponseCallback, Transporter} from '../transporters';
-import {GetAccessTokenResponse, Headers} from './oauth2client';
 import * as sts from './stscredentials';
 import {ClientAuthentication} from './oauth2common';
 import {SnakeToCamelObject, originalOrCamelOptions} from '../util';

src/auth/defaultawssecuritycredentialssupplier.ts

@@ -17,7 +17,7 @@ import {Gaxios, GaxiosOptions} from 'gaxios';
 import {Transporter} from '../transporters';
 import {AwsSecurityCredentialsSupplier} from './awsclient';
 import {AwsSecurityCredentials} from './awsrequestsigner';
-import {Headers} from './oauth2client';
+import {Headers} from './authclient';
 
 /**
  * Interface defining the AWS security-credentials endpoint response.

src/auth/downscopedclient.ts

@@ -22,9 +22,13 @@ import * as stream from 'stream';
 
 import {BodyResponseCallback} from '../transporters';
 import {Credentials} from './credentials';
-import {AuthClient, AuthClientOptions} from './authclient';
+import {
+  AuthClient,
+  AuthClientOptions,
+  GetAccessTokenResponse,
+  Headers,
+} from './authclient';
 
-import {GetAccessTokenResponse, Headers} from './oauth2client';
 import * as sts from './stscredentials';
 
 /**

src/auth/externalAccountAuthorizedUserClient.ts

@@ -12,8 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-import {AuthClient, AuthClientOptions} from './authclient';
-import {Headers} from './oauth2client';
+import {AuthClient, AuthClientOptions, Headers} from './authclient';
 import {
   ClientAuthentication,
   getErrorFromOAuthErrorResponse,

src/auth/googleauth.ts

@@ -28,7 +28,7 @@ import {CredentialBody, ImpersonatedJWTInput, JWTInput} from './credentials';
 import {IdTokenClient} from './idtokenclient';
 import {GCPEnv, getEnv} from './envDetect';
 import {JWT, JWTOptions} from './jwtclient';
-import {Headers, OAuth2ClientOptions} from './oauth2client';
+import {OAuth2ClientOptions} from './oauth2client';
 import {
   UserRefreshClient,
   UserRefreshClientOptions,
@@ -47,7 +47,12 @@ import {
   EXTERNAL_ACCOUNT_TYPE,
   BaseExternalAccountClient,
 } from './baseexternalclient';
-import {AuthClient, AuthClientOptions, DEFAULT_UNIVERSE} from './authclient';
+import {
+  AuthClient,
+  AuthClientOptions,
+  DEFAULT_UNIVERSE,
+  Headers,
+} from './authclient';
 import {
   EXTERNAL_ACCOUNT_AUTHORIZED_USER_TYPE,
   ExternalAccountAuthorizedUserClient,

src/auth/idtokenclient.ts

@@ -13,8 +13,8 @@
 // limitations under the License.
 
 import {Credentials} from './credentials';
+import {Headers} from './authclient';
 import {
-  Headers,
   OAuth2Client,
   OAuth2ClientOptions,
   RequestMetadataResponse,

src/auth/jwtaccess.ts

@@ -16,7 +16,7 @@ import * as jws from 'jws';
 import * as stream from 'stream';
 
 import {JWTInput} from './credentials';
-import {Headers} from './oauth2client';
+import {Headers} from './authclient';
 import {LRUCache} from '../util';
 
 const DEFAULT_HEADER: jws.Header = {