Class Payment

constructor

• new Payment(
      amount: number,
      method: CreditCard | ElectronicFundsTransfer,
  ): Payment

  Parameters

  • amount: number

    The transaction's purchase amount.
  • method: CreditCard | ElectronicFundsTransfer

  Returns Payment

amount

method

getState

• getState(): CreditCard | ElectronicFundsTransfer

  Gets the current state (must be either StateA or StateB)

  Returns CreditCard | ElectronicFundsTransfer

isCreditCard

• isCreditCard(): this is { getState(): CreditCard }

  Returns this is { getState(): CreditCard }

isElectronicFundsTransfer

• isElectronicFundsTransfer(): this is { getState(): ElectronicFundsTransfer }

  Returns this is { getState(): ElectronicFundsTransfer }

isStateA

• isStateA(): this is { getState(): CreditCard }

  Type guard for StateA

  Returns this is { getState(): CreditCard }

isStateB

• isStateB(): this is { getState(): ElectronicFundsTransfer }

  Type guard for StateB

  Returns this is { getState(): ElectronicFundsTransfer }

toJSON

• toJSON(): unknown

  Returns unknown

StaticfromJSON

• fromJSON(json: unknown): Payment

  Parameters

  • json: unknown

  Returns Payment