Fix #79431

src/vs/workbench/api/common/extHostOutput.ts

@@ -7,7 +7,7 @@ import { MainContext, MainThreadOutputServiceShape, ExtHostOutputServiceShape }
 import * as vscode from 'vscode';
 import { URI } from 'vs/base/common/uri';
 import { Event, Emitter } from 'vs/base/common/event';
-import { Disposable, MutableDisposable } from 'vs/base/common/lifecycle';
+import { Disposable } from 'vs/base/common/lifecycle';
 import { VSBuffer } from 'vs/base/common/buffer';
 import { createDecorator } from 'vs/platform/instantiation/common/instantiation';
 import { IExtHostRpcService } from 'vs/workbench/api/common/extHostRpcService';
@@ -140,20 +140,12 @@ export class ExtHostOutputService implements ExtHostOutputServiceShape {
 	readonly _serviceBrand: any;
 
 	protected readonly _proxy: MainThreadOutputServiceShape;
-	protected readonly _channels: Map<string, AbstractExtHostOutputChannel> = new Map<string, AbstractExtHostOutputChannel>();
-	protected readonly _visibleChannelDisposable = new MutableDisposable();
 
 	constructor(@IExtHostRpcService extHostRpc: IExtHostRpcService) {
 		this._proxy = extHostRpc.getProxy(MainContext.MainThreadOutputService);
 	}
 
 	$setVisibleChannel(channelId: string): void {
-		if (channelId) {
-			const channel = this._channels.get(channelId);
-			if (channel) {
-				this._visibleChannelDisposable.value = channel.onDidAppend(() => channel.update());
-			}
-		}
 	}
 
 	createOutputChannel(name: string): vscode.OutputChannel {

src/vs/workbench/api/node/extHostOutputService.ts

@@ -13,6 +13,7 @@ import { dirExists, mkdirp } from 'vs/base/node/pfs';
 import { AbstractExtHostOutputChannel, ExtHostPushOutputChannel, ExtHostOutputService, LazyOutputChannel } from 'vs/workbench/api/common/extHostOutput';
 import { IExtHostInitDataService } from 'vs/workbench/api/common/extHostInitDataService';
 import { IExtHostRpcService } from 'vs/workbench/api/common/extHostRpcService';
+import { MutableDisposable } from 'vs/base/common/lifecycle';
 
 export class ExtHostOutputChannelBackedByFile extends AbstractExtHostOutputChannel {
 
@@ -49,6 +50,8 @@ export class ExtHostOutputService2 extends ExtHostOutputService {
 
 	private _logsLocation: URI;
 	private _namePool: number = 1;
+	private readonly _channels: Map<string, AbstractExtHostOutputChannel> = new Map<string, AbstractExtHostOutputChannel>();
+	private readonly _visibleChannelDisposable = new MutableDisposable();
 
 	constructor(
 		@IExtHostRpcService extHostRpc: IExtHostRpcService,
@@ -58,12 +61,23 @@ export class ExtHostOutputService2 extends ExtHostOutputService {
 		this._logsLocation = initData.logsLocation;
 	}
 
+	$setVisibleChannel(channelId: string): void {
+		if (channelId) {
+			const channel = this._channels.get(channelId);
+			if (channel) {
+				this._visibleChannelDisposable.value = channel.onDidAppend(() => channel.update());
+			}
+		}
+	}
+
 	createOutputChannel(name: string): vscode.OutputChannel {
 		name = name.trim();
 		if (!name) {
 			throw new Error('illegal argument `name`. must not be falsy');
 		}
-		return new LazyOutputChannel(name, this._doCreateOutChannel(name));
+		const extHostOutputChannel = this._doCreateOutChannel(name);
+		extHostOutputChannel.then(channel => channel._id.then(id => this._channels.set(id, channel)));
+		return new LazyOutputChannel(name, extHostOutputChannel);
 	}
 
 	private async _doCreateOutChannel(name: string): Promise<AbstractExtHostOutputChannel> {