Merge from vscode 4d91d96e5e121b38d33508cdef17868bab255eae

src/vs/platform/request/browser/requestService.ts

@@ -16,7 +16,7 @@ import { IRequestService } from 'vs/platform/request/common/request';
  */
 export class RequestService implements IRequestService {
 
-	_serviceBrand: undefined;
+	declare readonly _serviceBrand: undefined;
 
 	constructor(
 		@IConfigurationService private readonly configurationService: IConfigurationService,

src/vs/platform/request/common/request.ts

@@ -14,7 +14,7 @@ import { IRequestOptions, IRequestContext } from 'vs/base/parts/request/common/r
 export const IRequestService = createDecorator<IRequestService>('requestService');
 
 export interface IRequestService {
-	_serviceBrand: undefined;
+	readonly _serviceBrand: undefined;
 
 	request(options: IRequestOptions, token: CancellationToken): Promise<IRequestContext>;
 

src/vs/platform/request/common/requestIpc.ts

@@ -40,7 +40,7 @@ export class RequestChannel implements IServerChannel {
 
 export class RequestChannelClient {
 
-	_serviceBrand: undefined;
+	declare readonly _serviceBrand: undefined;
 
 	constructor(private readonly channel: IChannel) { }
 

src/vs/platform/request/node/requestService.ts

@@ -36,7 +36,7 @@ export interface NodeRequestOptions extends IRequestOptions {
  */
 export class RequestService extends Disposable implements IRequestService {
 
-	_serviceBrand: undefined;
+	declare readonly _serviceBrand: undefined;
 
 	private proxyUrl?: string;
 	private strictSSL: boolean | undefined;