/**
 * Checks the parts of an entry without which it is simply unusable.
 *
 * This is the tier applied to entries arriving from a peer. Anything that can
 * be repaired by dropping a field is deliberately *not* checked here:
 * `CommandManager.processRemoteCommands` drops a failing remote command and
 * never retries it, so a strict check would lose the entry permanently.
 * @param raw - The entry to check, which may be anything at all.
 * @returns Null when the entry is usable, otherwise the reason it is not.
 */
export declare const validateEntryFatal: (raw: unknown) => string | null;
/**
 * Checks an entry fully, matching fields included.
 *
 * This is the tier applied to entries originating on this device, where a
 * problem can still be shown to the user who caused it.
 * @param raw - The entry to check, which may be anything at all.
 * @returns Null when the entry is usable, otherwise the reason it is not.
 */
export declare const validateEntryStrict: (raw: unknown) => string | null;