How to use the @aws-amplify/auth.Auth.confirmSignIn function in @aws-amplify/auth

async confirm(event) {
    if (event) {
      event.preventDefault();
    }
    const mfaType =
      this.user['challengeName'] === ChallengeName.SoftwareTokenMFA ? ChallengeName.SoftwareTokenMFA : null;
    if (!Auth || typeof Auth.confirmSignIn !== 'function') {
      throw new Error('No Auth module found, please ensure @aws-amplify/auth is imported');
    }

    try {
      await Auth.confirmSignIn(this.user, this.code, mfaType);
      this.checkContact(this.user);
    } catch (error) {
      logger.error(error);
      throw new Error(error);
    }
  }