add a message to let users know where pylance output window is

Author: bschnurr

src/client/activation/node/languageServerProxy.ts

@@ -17,11 +17,12 @@ import { captureTelemetry, sendTelemetryEvent } from '../../telemetry';
 import { EventName } from '../../telemetry/constants';
 import { FileBasedCancellationStrategy } from '../common/cancellationUtils';
 import { ProgressReporting } from '../progress';
-import { ILanguageClientFactory, ILanguageServerProxy } from '../types';
+import { ILanguageClientFactory, ILanguageServerOutputChannel, ILanguageServerProxy } from '../types';
 import { traceDecoratorError, traceDecoratorVerbose, traceError } from '../../logging';
 import { IWorkspaceService } from '../../common/application/types';
 import { PYLANCE_EXTENSION_ID } from '../../common/constants';
 import { PylanceApi } from './pylanceApi';
+import { Pylance } from '../../common/utils/localize';
 
 // eslint-disable-next-line @typescript-eslint/no-namespace
 namespace InExperiment {
@@ -67,6 +68,7 @@ export class NodeLanguageServerProxy implements ILanguageServerProxy {
         private readonly environmentService: IEnvironmentVariablesProvider,
         private readonly workspace: IWorkspaceService,
         private readonly extensions: IExtensions,
+        private readonly lsOutputChannel: ILanguageServerOutputChannel,
     ) {}
 
     private static versionTelemetryProps(instance: NodeLanguageServerProxy) {
@@ -100,6 +102,7 @@ export class NodeLanguageServerProxy implements ILanguageServerProxy {
         if (api && api.client && api.client.isEnabled()) {
             this.pylanceApi = api;
             await api.client.start();
+            this.lsOutputChannel.channel.appendLine(Pylance.pylanceOutputChannelMessage);
             return;
         }
 

src/client/api.ts

@@ -1,32 +1,33 @@
-// Copyright (c) Microsoft Corporation. All rights reserved.
-// Licensed under the MIT License.
-
-'use strict';
-
-import { BaseLanguageClient } from 'vscode-languageclient';
-import { LanguageClient } from 'vscode-languageclient/browser';
-import { PYTHON_LANGUAGE } from '../common/constants';
-import { ApiForPylance, TelemetryReporter } from '../pylanceApi';
-
-export interface IBrowserExtensionApi {
-    /**
-     * @deprecated Temporarily exposed for Pylance until we expose this API generally. Will be removed in an
-     * iteration or two.
-     */
-    pylance: ApiForPylance;
-}
-
-export function buildApi(reporter: TelemetryReporter): IBrowserExtensionApi {
-    const api: IBrowserExtensionApi = {
-        pylance: {
-            // eslint-disable-next-line @typescript-eslint/no-explicit-any
-            createClient: (...args: any[]): BaseLanguageClient =>
-                new LanguageClient(PYTHON_LANGUAGE, 'Python Language Server', args[0], args[1]),
-            start: (client: BaseLanguageClient): Promise<void> => client.start(),
-            stop: (client: BaseLanguageClient): Promise<void> => client.stop(),
-            getTelemetryReporter: () => reporter,
-        },
-    };
-
-    return api;
-}
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+'use strict';
+
+import { BaseLanguageClient } from 'vscode-languageclient';
+import { LanguageClient } from 'vscode-languageclient/browser';
+import { PYTHON_LANGUAGE } from '../common/constants';
+import { ApiForPylance, TelemetryReporter } from '../pylanceApi';
+
+export interface IBrowserExtensionApi {
+    /**
+     * @deprecated Temporarily exposed for Pylance until we expose this API generally. Will be removed in an
+     * iteration or two.
+     */
+    pylance: ApiForPylance;
+}
+
+export function buildApi(reporter: TelemetryReporter): IBrowserExtensionApi {
+    const api: IBrowserExtensionApi = {
+        pylance: {
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            // deprecated
+            createClient: (...args: any[]): BaseLanguageClient =>
+                new LanguageClient(PYTHON_LANGUAGE, 'Python Language Server', args[0], args[1]),
+            start: (client: BaseLanguageClient): Promise<void> => client.start(),
+            stop: (client: BaseLanguageClient): Promise<void> => client.stop(),
+            getTelemetryReporter: () => reporter,
+        },
+    };
+
+    return api;
+}