@vbyte/btc-dev/dist/lib/meta/locktime.js

Batteries-included toolset for plebian bitcoin development

import { Assert } from '@vbyte/micro-lib';
const LOCKTIME_THRESHOLD = 500000000;
export var LocktimeField;
(function (LocktimeField) {
    LocktimeField.encode = encode_locktime;
    LocktimeField.decode = decode_locktime;
})(LocktimeField || (LocktimeField = {}));
export function encode_locktime(locktime) {
    switch (locktime.type) {
        case 'timelock':
            Assert.ok(locktime.stamp >= LOCKTIME_THRESHOLD, 'Invalid timestamp');
            return locktime.stamp;
        case 'heightlock':
            Assert.ok(locktime.height > 0, 'height must be greater than 0');
            Assert.ok(locktime.height < LOCKTIME_THRESHOLD, 'invalid block height');
            return locktime.height;
        default:
            throw new Error('Invalid locktime type');
    }
}
export function decode_locktime(locktime) {
    if (isNaN(locktime) || locktime <= 0) {
        return null;
    }
    if (locktime < LOCKTIME_THRESHOLD) {
        return {
            type: 'heightlock',
            height: locktime
        };
    }
    else {
        return {
            type: 'timelock',
            stamp: locktime
        };
    }
}