Ability to use MSAL in the Desktop (#225272)

* Ability to use MSAL in the Desktop

* add comment about MSAL workaround

extensions/microsoft-authentication/src/common/loggerOptions.ts

@@ -0,0 +1,61 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { LogLevel as MsalLogLevel } from '@azure/msal-node';
+import { env, LogLevel, LogOutputChannel } from 'vscode';
+
+export class MsalLoggerOptions {
+	piiLoggingEnabled = false;
+
+	constructor(private readonly _output: LogOutputChannel) { }
+
+	get logLevel(): MsalLogLevel {
+		return this._toMsalLogLevel(env.logLevel);
+	}
+
+	loggerCallback(level: MsalLogLevel, message: string, containsPii: boolean): void {
+		if (containsPii) {
+			return;
+		}
+
+		switch (level) {
+			case MsalLogLevel.Error:
+				this._output.error(message);
+				return;
+			case MsalLogLevel.Warning:
+				this._output.warn(message);
+				return;
+			case MsalLogLevel.Info:
+				this._output.info(message);
+				return;
+			case MsalLogLevel.Verbose:
+				this._output.debug(message);
+				return;
+			case MsalLogLevel.Trace:
+				this._output.trace(message);
+				return;
+			default:
+				this._output.info(message);
+				return;
+		}
+	}
+
+	private _toMsalLogLevel(logLevel: LogLevel): MsalLogLevel {
+		switch (logLevel) {
+			case LogLevel.Trace:
+				return MsalLogLevel.Trace;
+			case LogLevel.Debug:
+				return MsalLogLevel.Verbose;
+			case LogLevel.Info:
+				return MsalLogLevel.Info;
+			case LogLevel.Warning:
+				return MsalLogLevel.Warning;
+			case LogLevel.Error:
+				return MsalLogLevel.Error;
+			default:
+				return MsalLogLevel.Info;
+		}
+	}
+}