@trezor/utxo-lib/lib/compose/sorting/bip69SortingStrategy.js

Client-side Bitcoin-like JavaScript library

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.bip69SortingStrategy = void 0;
const convertOutput_1 = require("./convertOutput");
function inputComparator(a, b) {
  return Buffer.from(a.txid, 'hex').compare(Buffer.from(b.txid, 'hex')) || a.vout - b.vout;
}
function outputComparator(a, b) {
  return a.value.cmp(b.value) || (Buffer.isBuffer(a.script) && Buffer.isBuffer(b.script) ? a.script.compare(b.script) : a.script.length - b.script.length);
}
const bip69SortingStrategy = ({
  result,
  request,
  convertedInputs
}) => {
  const defaultPermutation = [];
  const convertedOutputs = result.outputs.map((output, index) => {
    defaultPermutation.push(index);
    if (request.outputs[index]) {
      return (0, convertOutput_1.convertOutput)(output, request.outputs[index]);
    }
    return (0, convertOutput_1.convertOutput)(output, {
      type: 'change',
      ...request.changeAddress
    });
  });
  const permutation = defaultPermutation.sort((a, b) => outputComparator(result.outputs[a], result.outputs[b]));
  const sortedOutputs = permutation.map(index => convertedOutputs[index]);
  return {
    inputs: convertedInputs.sort(inputComparator),
    outputs: sortedOutputs,
    outputsPermutation: permutation
  };
};
exports.bip69SortingStrategy = bip69SortingStrategy;
//# sourceMappingURL=bip69SortingStrategy.js.map