Added useCustomAuth0Domain flag

openid-configuration now contains an optional flag to allow
 custom domains in auth0 to function as normal.
 A small change in the url service checks if the authority ends
 with auth0.com OR the useCustomAuth0Domain is set.

projects/angular-auth-oidc-client/src/lib/config/openid-configuration.ts

@@ -66,6 +66,12 @@ export interface OpenIdConfiguration {
    * By entering a value, you can renew the tokens before the tokens expire.
    */
   renewTimeBeforeTokenExpiresInSeconds?: number;
+  /**
+   * Allows for a custom domain to be used with Auth0.
+   * With this flag set the 'authority' does not have to end with
+   * 'auth0.com' to trigger the auth0 special handling of logouts.
+   */
+  useCustomAuth0Domain?: boolean;
   /**
    * When set to true, refresh tokens are used to renew the user session.
    * When set to false, standard silent renew is used.

projects/angular-auth-oidc-client/src/lib/utils/url/url.service.ts

@@ -796,13 +796,13 @@ export class UrlService {
   }
 
   private isAuth0Endpoint(configuration: OpenIdConfiguration): boolean {
-    const { authority } = configuration;
+    const { authority, useCustomAuth0Domain } = configuration;
 
     if (!authority) {
       return false;
     }
 
-    return authority.endsWith(AUTH0_ENDPOINT);
+    return authority.endsWith(AUTH0_ENDPOINT) || useCustomAuth0Domain;
   }
 
   private composeAuth0Endpoint(configuration: OpenIdConfiguration): string {