/**
 * Strip Vue scoped-style attributes (`data-v-*`) from island props before hashing
 * or rendering. Scoped-id markers leak in from parent components and are not part
 * of the logical island input.
 *
 * Used before island props are serialized and sent to the island handler.
 *
 * @internal
 */
export declare function filterIslandProps(props: Record<string, any> | null | undefined): Record<string, any>;
/**
 * Serialize island props exactly as they will be sent to the island handler, so
 * the client hashes the same string the server receives. Values that JSON
 * drops or rewrites (`undefined`, functions, `NaN`, ...) are removed.
 *
 * @internal
 */
export declare function serializeIslandProps(props: Record<string, any> | null | undefined): string;
/**
 * Compute the `hashId` segment embedded in an island URL (`/__nuxt_island/<Name>_<hashId>.json`).
 *
 * The hash binds the response to the requested `(name, props, context, source)` tuple, so the
 * server can reject requests whose URL hash does not match the supplied query/body.
 *
 * @internal
 */
export declare function computeIslandHash(name: string, serializedProps: string, context: Record<string, any>, source: string | undefined): string;