OpenMethod.md

public open() {
  firebase.auth().signInWithPopup(provider).then((result) => {
        this._setSession(result);
        this.token = result.credential.accessToken;
        this.user = result.user;
        this.isAuthenticated = true;
        this.router.navigate(['/dashboard']);
      })
      .catch((error) => {
        this.router.navigate(['']);
      });
}