import type { StateStore } from '../core/store.ts';
export type SqliteStoreOptions = {
    /** File path, or `':memory:'` for a durable-shaped store with no file. */
    readonly path?: string;
    readonly retentionHours?: number;
    /** Table name, in case the host already owns the database. */
    readonly table?: string;
};
export type SqliteStore = StateStore & {
    /** Delete expired rows now. Returns how many were removed. */
    sweep(now: number): number;
    /** Retained entities, expired rows included until swept. */
    size(): number;
    close(): void;
};
/**
 * Open (or create) a SQLite-backed store.
 *
 * The state is stored as one JSON column rather than as typed columns. The window
 * (D36) is a variable-length array and the trust fields are floats whose exact
 * values matter (the conformance kit checks precision), normalising that into
 * rows would buy queryability that D1 says nothing needs, since the entity key is
 * opaque and there is nothing to query by.
 */
export declare function sqliteStore(options?: SqliteStoreOptions): SqliteStore;
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