raast library

Raast QR codes: person-to-person and merchant payloads, parsing and validation.

Same as the pakdatakit/raast entry point of the npm package.

Classes

EmvField: A parsed EMV QR field. children is set for template fields.
MerchantAccountInfo: Account details for a merchant QR, as issued by the merchant's bank.
ParsedRaastQr: Result of parseRaastQr.
RaastQrValidation: Result of validateRaastQr.

RaastQrError: A problem that stops a Raast QR from working or makes it unsafe to pay.
RaastQrKind: Kind of Raast QR code.
RaastQrWarning: Something worth telling the payer, but which does not stop payment.

createMerchantQr({required MerchantAccountInfo merchantAccount, required String merchantName, required String city, String? mcc, num? amount, bool? isDynamic, String? billNumber, String? mobileNumber, String? reference, DateTime? dueDate, num? amountAfterDueDate}) → String: Creates an EMVCo merchant-presented QR payload following SBP's Pakistan QR standard (currency 586, country PK, CRC in tag 63), including the Pakistan-specific due-date fields.
createRaastP2PQr({required String iban, String? scheme, num? amount, DateTime? expiresAt, Object? expiresIn, String? bankName, String? particulars, DateTime? now}) → String: Creates a Raast person-to-person QR payload in SBP's P2P QR format (payload format 02), matching the QR codes banking apps generate, so it can be scanned by apps such as Easypaisa and JazzCash. Encode the string as a QR code with any QR library.
parseRaastQr(String payload) → ParsedRaastQr?: Parses a Raast QR payload: either a person-to-person QR (payload format 02) or an EMVCo merchant QR (payload format 01), and verifies its CRC.
validateRaastQr(String payload, {DateTime? now, int expiresSoonMs = 3600000}) → RaastQrValidation: Checks whether a Raast QR code can be paid, e.g. before showing a payment screen or to warn about a tampered sticker.