@node-dlc/bitcoin/dist/LexicographicalSorters.js

DLC bitcoin

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.bip69OutputSorter = exports.bip69InputSorter = void 0;
const HashByteOrder_1 = require("./HashByteOrder");
/**
 * Compares two transaction inputs and lexicographically sorted in
 * ascending order using the reversed byte order (RPC) of the txids.
 * If the same txids are in both TxIn, then the output index is sorted
 * in ascending order.
 * @param a
 * @param b
 */
function bip69InputSorter(a, b) {
    const txid = a.outpoint.txid
        .serialize(HashByteOrder_1.HashByteOrder.RPC)
        .compare(b.outpoint.txid.serialize());
    if (txid !== 0)
        return txid;
    if (a.outpoint.outputIndex < b.outpoint.outputIndex)
        return -1;
    if (a.outpoint.outputIndex > b.outpoint.outputIndex)
        return 1;
    return 0;
}
exports.bip69InputSorter = bip69InputSorter;
/**
 * Sort transaction amounts in ascending order. Then ScriptPubKey values
 * will be sorted in ascending byte order next.
 * @param a
 * @param b
 */
function bip69OutputSorter(a, b) {
    // sort by amount desc first
    const amount = Number(a.value.sats - b.value.sats);
    if (amount !== 0)
        return amount;
    // then sort by script pub key
    return a.scriptPubKey.serializeCmds().compare(b.scriptPubKey.serializeCmds());
}
exports.bip69OutputSorter = bip69OutputSorter;
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