/**
 * A stable per-install writer id (the last-write-wins tiebreak stamped into
 * every payload), persisted in localStorage under `<prefix>writerId`.
 *
 * The id is an unkeyed, clearable attribution label -- never an identity.
 *
 * @param [options] {object}
 * @param [options.storageKeyPrefix] {string}   the localStorage key prefix
 *   (defaults to {@link DEFAULT_STORAGE_KEY_PREFIX})
 * @returns {string}
 */
export declare function getWriterId({ storageKeyPrefix }?: {
    storageKeyPrefix?: string;
}): string;
/**
 * Clears the persisted writer id (the clear-data grade of the wipe), so nothing
 * this library wrote survives in localStorage. Only persistence is touched; the
 * running session's in-memory id is replaced by
 * {@link StorageContext.resetWriterId}, because the session keeps running over
 * its new anonymous replica and its write verbs still have to stamp.
 *
 * @param [options] {object}
 * @param [options.storageKeyPrefix] {string}   the localStorage key prefix
 *   (defaults to {@link DEFAULT_STORAGE_KEY_PREFIX})
 * @returns {void}
 */
export declare function clearPersistedWriterId({ storageKeyPrefix }?: {
    storageKeyPrefix?: string;
}): void;
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