export type BackgroundPaymentParams = {
  user: UserEntity;
  card: CardEntity;
  merchant: MerchantEntity;
  useCard: true;
  amount: number;
  chargeType: ChargeType,
  useBonuses: boolean,
  balanceAccount: Account
} | {
  user: UserEntity;
  useCard: false;
  amount: number;
  chargeType: ChargeType;
  useBonuses: boolean;
  balanceAccount: Account
}

export type BackgroundPaymentParamsTrue = {
    useCard: true;
    amount: number;
    useBonuses: {
        v: boolean
    };
}
export type BackgroundPaymentParamsFalse = {
    useCard: false;
    amount: number;
    useBonuses?: {
        v: boolean
    };
}

export type BackgroundPaymentParams = BackgroundPaymentParamsTrue | BackgroundPaymentParamsFalse;
let t1: BackgroundPaymentParams;
let checker1 = () =>
    t1.useCard === false ? console.log(t1.useBonuses.v) : console.log('no');

let checker2 = () =>
    t1.useCard === true ? console.log(t1.useBonuses.v) : console.log('no');