app.url.ts

export const GAME_WEB_FORMAT_URL = '/#{sessionId}/game/format';
export const GAME_WEB_APP_URL = 'https://qa.game.com';

special-web-app-page.ts

@Component(...)
export class ProfilePage {
   ...
   
   async getSpecialApp() {
     const userId = await this.userService.getUserId();
     const token = userId?.token;
     if (token) {
       this.formatUserId(token).subscribe((id) => {
         if (id) {
           const url = [GAME_WEB_APP_URL, id].join('?');
           Browser.open(url);
         }
       });
     }
   }
   
   async formatUserId(token: any) {
     return from(this.http.get(
       this.urlBuilder.build(GAME_WEB_FORMAT_URL, {
         sessionId: this.sessionId,
         listId: this.listId,
       }, { 
         queryParams: { userToken: token },
       });
     )).pipe(
       map((response: any) => {
         console.log(response, 'got id');
         return response.body.formattedId;
       }),
       catchError((e) => {
         console.warn('Failed to format token');
         return of(e);
       })
     );
   }
}