@ledgerhq/hw-transport-mocker/lib-es/createTransportRecorder.js

Ledger Hardware Wallet mocker utilities used for tests

import Transport from "@ledgerhq/hw-transport";
/**
 * decorate a real transport and proxy it to record the APDUs.
 * @param {Transport} DecoratedTransport: an actual transport class. Like @ledgerhq/hw-transport-webusb
 * @param {RecordStore} recordStore: a record store to record the apdu in.
 */
const createTransportRecorder = (DecoratedTransport, recordStore) => {
    class TransportRecorder extends Transport {
        static recordStore = recordStore;
        static isSupported = DecoratedTransport.constructor.isSupported;
        static list = DecoratedTransport.constructor.list;
        static listen = DecoratedTransport.constructor.listen;
        static open = (descriptor, ...args) => DecoratedTransport.constructor
            .open(descriptor, ...args)
            .then(t => new TransportRecorder(t));
        setScrambleKey() { }
        close() {
            return this.transport.close();
        }
        transport;
        constructor(t) {
            super();
            this.transport = t;
        }
        exchange(apdu) {
            const output = this.transport.exchange(apdu);
            output.then(out => {
                recordStore.recordExchange(apdu, out);
            });
            return output;
        }
    }
    return TransportRecorder;
};
export default createTransportRecorder;
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