@vbyte/btc-dev/dist/lib/tx/create.js

Batteries-included toolset for plebian bitcoin development

import { Assert } from '@vbyte/micro-lib';
import { COINBASE, DEFAULT } from '../../const.js';
import { normalize_prevout, normalize_sequence, normalize_value } from './util.js';
import { assert_tx_template, assert_vin_template, assert_vout_template } from './validate.js';
export function create_coinbase_input(config) {
    assert_vin_template(config);
    Assert.exists(config.coinbase, 'coinbase is required');
    const txid = COINBASE.TXID;
    const vout = COINBASE.VOUT;
    const coinbase = config.coinbase;
    const witness = config.witness ?? [];
    const sequence = normalize_sequence(config.sequence);
    return { coinbase, prevout: null, script_sig: null, sequence, witness, txid, vout };
}
export function create_virtual_input(config) {
    assert_vin_template(config);
    Assert.is_empty(config.coinbase, 'coinbase is not allowed');
    Assert.is_empty(config.prevout, 'prevout is not allowed');
    const { txid, vout, script_sig = null, witness = [] } = config;
    const sequence = normalize_sequence(config.sequence);
    return { txid, vout, coinbase: null, prevout: null, script_sig, sequence, witness };
}
export function create_spend_input(config) {
    assert_vin_template(config);
    Assert.exists(config.prevout, 'prevout is required');
    const { txid, vout, script_sig = null, witness = [] } = config;
    const prevout = normalize_prevout(config.prevout);
    const sequence = normalize_sequence(config.sequence);
    return { txid, vout, coinbase: null, prevout, script_sig, sequence, witness };
}
export function create_tx_input(config) {
    if (config.coinbase)
        return create_coinbase_input(config);
    if (config.prevout)
        return create_spend_input(config);
    return create_virtual_input(config);
}
export function create_tx_output(config) {
    assert_vout_template(config);
    const script_pk = config.script_pk;
    const value = normalize_value(config.value);
    return { script_pk, value };
}
export function create_tx(config) {
    assert_tx_template(config);
    const { vin = [], vout = [] } = config ?? { vin: [], vout: [] };
    const locktime = config.locktime ?? DEFAULT.LOCKTIME;
    const version = config.version ?? DEFAULT.VERSION;
    const inputs = vin.map(txin => create_tx_input(txin));
    const outputs = vout.map(txout => create_tx_output(txout));
    return { locktime, vin: inputs, vout: outputs, version };
}