@trezor/utxo-lib/lib/vsize.js

Client-side Bitcoin-like JavaScript library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.getTransactionVbytes = exports.getTransactionVbytesFromAddresses = void 0;
const tslib_1 = require("tslib");
const BitcoinJsAddress = tslib_1.__importStar(require("./address"));
const address_1 = require("./address");
const coinselectUtils_1 = require("./coinselect/coinselectUtils");
const isKnownInputAddress = (type) => type in coinselectUtils_1.INPUT_SCRIPT_LENGTH;
const toVin = (network) => (address) => {
    const type = (0, address_1.getAddressType)(address, network);
    if (isKnownInputAddress(type)) {
        return {
            type,
            script: { length: coinselectUtils_1.INPUT_SCRIPT_LENGTH[type] },
        };
    }
    throw new Error(`Unknown input address '${address}'`);
};
const toVout = (network) => (address) => {
    let length;
    try {
        length = BitcoinJsAddress.toOutputScript(address, network).length;
    }
    catch {
        const msg = address.match(/^OP_RETURN (.*)$/)?.pop();
        if (msg) {
            length = msg.match(/^\(.*\)$/)
                ? msg.length
                : 2 + msg.length / 2;
        }
        else {
            length = 0;
        }
    }
    return { script: { length } };
};
const getTransactionVbytesFromAddresses = (inputs, outputs, network) => {
    const ins = inputs.map(toVin(network));
    const outs = outputs.map(toVout(network));
    return (0, coinselectUtils_1.transactionBytes)(ins, outs);
};
exports.getTransactionVbytesFromAddresses = getTransactionVbytesFromAddresses;
const getTransactionVbytes = ({ vin, vout }, network) => {
    const ins = vin.map(({ addresses = [] }) => addresses[0] ?? '');
    const outs = vout.map(({ addresses = [] }) => addresses[0] ?? '');
    return (0, exports.getTransactionVbytesFromAddresses)(ins, outs, network);
};
exports.getTransactionVbytes = getTransactionVbytes;
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