Fixed TeamsProvider.handleAuth by using instance of userAgentApplication (#820)

Co-authored-by: Nicolas Vogt <[email protected]>

Author: nmetulev

packages/providers/mgt-msal-provider/src/MsalProvider.ts

@@ -111,13 +111,15 @@ export class MsalProvider extends IProvider {
   public scopes: string[];
 
   /**
-   * Determines application
+   * Gets the user agent application instance
    *
    * @protected
    * @type {UserAgentApplication}
    * @memberof MsalProvider
    */
-  protected _userAgentApplication: UserAgentApplication;
+  public get userAgentApplication() {
+    return this._userAgentApplication;
+  }
 
   /**
    * client-id authentication
@@ -127,6 +129,8 @@ export class MsalProvider extends IProvider {
    * @memberof MsalProvider
    */
   protected clientId: string;
+
+  private _userAgentApplication: UserAgentApplication;
   private _loginType: LoginType;
   private _loginHint: string;
 

packages/providers/mgt-teams-provider/src/TeamsProvider.ts

@@ -187,7 +187,7 @@ export class TeamsProvider extends MsalProvider {
       scopes
     });
 
-    if ((UserAgentApplication.prototype as any).urlContainsHash(window.location.hash)) {
+    if (provider.userAgentApplication.urlContainsHash(window.location.hash)) {
       // the page should redirect again
       return;
     }
@@ -347,7 +347,7 @@ export class TeamsProvider extends MsalProvider {
     }
 
     try {
-      const response = await this._userAgentApplication.acquireTokenSilent(accessTokenRequest);
+      const response = await this.userAgentApplication.acquireTokenSilent(accessTokenRequest);
       return response.accessToken;
     } catch (e) {
       if (this.requiresInteraction(e)) {