node-stratum-pool/lib/merkleTree.js

var Promise = require('promise');
var merklebitcoin = Promise.denodeify(require('merkle-bitcoin'));
var util = require('./util.js');


function calcRoot(hashes) {
    var result = merklebitcoin(hashes);
    return result._65.root;
}

exports.getRoot = function (rpcData, generateTxRaw) {
    hashes = [util.reverseBuffer(Buffer(generateTxRaw, 'hex')).toString('hex')];
    rpcData.transactions.forEach(function (value) {
        hashes.push(value.hash);
    });
    if (hashes.length === 1) {
        return hashes[0];
    }
    var result = calcRoot(hashes);
    return result;
};