@t1mmen/srtd/dist/utils/getNextTimestamp.js

Supabase Repeatable Template Definitions (srtd): 🪄 Live-reloading SQL templates for Supabase DX. Make your database changes reviewable and migrations maintainable! 🚀

/**
 * Generate the next unique migration timestamp.
 *
 * This is a PURE function - it does not mutate any state.
 * The caller is responsible for updating lastTimestamp in the build log.
 *
 * @param lastTimestamp - The last timestamp used (from build log)
 * @returns Object containing the new timestamp and the value to store as lastTimestamp
 */
export function getNextTimestamp(lastTimestamp) {
    const now = new Date();
    const timestamp = now.toISOString().replace(/\D/g, '').slice(0, 14);
    if (timestamp <= lastTimestamp) {
        // Clock hasn't advanced past last timestamp, increment
        const nextTimestamp = (BigInt(lastTimestamp) + 1n).toString();
        return {
            timestamp: nextTimestamp,
            newLastTimestamp: nextTimestamp,
        };
    }
    return {
        timestamp,
        newLastTimestamp: timestamp,
    };
}
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