/**
 * Defensive parser for `data-ilha-state` / `data-ilha-props` snapshot
 * attributes on the router side. Mirrors the core ilha guards: size cap,
 * plain-object check, depth cap, and prototype-key stripping. Returns
 * undefined (degrade gracefully) on any failure.
 */
/** JSON leaf values accepted in SSR hydrate snapshots. */
export type SnapshotLeaf = string | number | boolean | null;
/** JSON values accepted in SSR hydrate snapshots. */
export type SnapshotValue = SnapshotLeaf | SnapshotObject | readonly SnapshotValue[];
export interface SnapshotObject {
    readonly [key: string]: SnapshotValue | undefined;
}
export declare const sanitizeSnapshotObject: <T>(value: T) => SnapshotObject | undefined;
export declare const parseSnapshotAttr: (raw: string) => SnapshotObject | undefined;