import type { KvStoreDeleteRequest, KvStorePostRequest, MaterialKvstoreGetRequest } from './apis';
import type { EliceCDK } from './EliceCDK';
import type { AnyObject, Primitive } from './typings';
/**
 * Material-level key-value storage interface.
 *
 * Unlike `kvstore`, data here is not user-scoped—it's shared across all users viewing the material.
 * Useful for storing shared configuration or content state.
 */
export declare class EliceCDKMaterialKvstore {
    private readonly ctx;
    constructor(ctx: EliceCDK);
    /**
     * Retrieves a value from the material-level key-value store.
     *
     * Data is shared across all users for this material (not user-scoped).
     *
     * @param params - Object containing the `key` to retrieve.
     * @param init - Optional fetch request configuration.
     * @returns The stored value, or `null` if not found.
     *
     * @example
     * ```ts
     * import { EliceCDK } from '@eliceio/cdk';
     *
     * const sdk = new EliceCDK();
     * await sdk.init();
     *
     * const config = await sdk.materialKvstore.get({ key: 'sharedConfig' });
     * // { maxAttempts: 3 }
     * ```
     */
    get: <T extends Primitive | AnyObject = any>(params: MaterialKvstoreGetRequest, init?: RequestInit) => Promise<T | null>;
    /**
     * Saves a value to the material-level key-value store.
     *
     * Data is shared across all users for this material (not user-scoped).
     *
     * @param params - Object containing `key` (camelCase, alphanumeric) and `value`.
     * @param init - Optional fetch request configuration.
     *
     * @example
     * ```ts
     * import { EliceCDK } from '@eliceio/cdk';
     *
     * const sdk = new EliceCDK();
     * await sdk.init();
     *
     * await sdk.materialKvstore.post({
     *   key: 'sharedConfig',
     *   value: { maxAttempts: 3 },
     * });
     * ```
     */
    post: (params: {
        key: KvStorePostRequest["key"];
        value: Primitive | AnyObject;
    }, init?: RequestInit) => Promise<void>;
    /**
     * Deletes a value from the material-level key-value store.
     *
     * @param key - The key to delete (camelCase, alphanumeric).
     * @param init - Optional fetch request configuration.
     *
     * @example
     * ```ts
     * import { EliceCDK } from '@eliceio/cdk';
     *
     * const sdk = new EliceCDK();
     * await sdk.init();
     *
     * await sdk.materialKvstore.delete('sharedConfig');
     * ```
     */
    delete: (key: KvStoreDeleteRequest["key"], init?: RequestInit) => Promise<void>;
}