@arturwojnar/hermes-postgresql/lib/lsn.js

Production-Ready TypeScript Outbox Pattern for PostgreSQL

const LSN_REGEXP = new RegExp(`[0-9a-f]+/[0-9a-f]+`, 'i');
const convertLsnToBigInt = (lsn) => {
    const [upperWal, lowerWal] = lsn.split('/').map((x) => parseInt(x, 16));
    return (BigInt(upperWal) << 32n) | BigInt(lowerWal);
};
const constructLsn = (upperWal, lowerWal) => `${upperWal}/${lowerWal}`;
const isLsn = (value) => LSN_REGEXP.test(value);
const toLsn = (value) => {
    if (isLsn(value)) {
        return value;
    }
    throw new Error(`not LSN ${value}`);
};
export { constructLsn, convertLsnToBigInt, isLsn, toLsn };
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