export type SyncCursor = import("./sync-api-client-types.js").SyncCursor;
/**
 * @module sync-cursor
 *
 * Shared cursor helpers for the sync change feed: building a cursor from a
 * serialized sync entry and ordering two cursors under the feed's stable order
 * (server sequence when present, else updated-at then id). The server channel
 * advances its per-subscription replay watermark with these across out-of-order
 * live broadcasts, and the realtime bridge advances the persisted scope cursor
 * monotonically on pushed changes.
 */
/** @typedef {import("./sync-api-client-types.js").SyncCursor} SyncCursor */
/**
 * Builds a cursor from a serialized sync entry, or null when the entry carries
 * no cursor identity (no updated-at).
 * @param {Record<string, ReturnType<typeof JSON.parse>>} entry - Serialized sync entry.
 * @returns {SyncCursor} Cursor for the entry, or null.
 */
export declare function cursorFromSyncEntry(entry: Record<string, ReturnType<typeof JSON.parse>>): SyncCursor;
/**
 * Whether one cursor is strictly later than another under the change-feed order.
 * A sequenced cursor is always later than an unsequenced one; both sequenced
 * cursors order by server sequence; both unsequenced cursors order by updated-at
 * then id.
 * @param {SyncCursor} candidate - Candidate cursor.
 * @param {SyncCursor} current - Current cursor.
 * @returns {boolean} Whether the candidate is later.
 */
export declare function isCursorAfter(candidate: SyncCursor, current: SyncCursor): boolean;
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