Function normalizeTimestamp

utils/userStatus.js:16–39

(value)

 * @returns {number|null} Normalized timestamp in milliseconds or null if invalid.
 */
const normalizeTimestamp = (value) => {
  if (value == null) {
    return null;
  }

  if (typeof value === "string") {
    const trimmed = value.trim();
    if (trimmed === "") {
      return null;
    }
    const parsed = Number(trimmed);
    return Number.isFinite(parsed) ? parsed : null;
  }

  if (typeof value === "number") {
    return Number.isFinite(value) ? value : null;
  }

  if (value?.toMillis && typeof value.toMillis === "function") {
    return value.toMillis();
  }

  return null;
};

/**
 * Determines the timestamp to persist in the `lastOooUntil` field based on state transitions.