import { ScratchGetRequest, ScratchSendRequest, Tool } from './Tool';
/**
 * @typedef {object} Request
 * @property {string} url
 * @property {*} body
 * @property {string} method
 * @property {boolean} withCredentials
 */
type ToolFilter = typeof ProxyTool.TOOL_FILTER[keyof typeof ProxyTool.TOOL_FILTER];
/**
 * Get and send assets with other tools in sequence.
 */
export default class ProxyTool implements Tool {
    tools: Tool[];
    /**
     * Constant values that filter the set of tools in a ProxyTool instance.
     * @enum {string}
     */
    static TOOL_FILTER: {
        /**
         * Use all tools.
         */
        readonly ALL: "all";
        /**
         * Use tools that are ready right now.
         */
        readonly READY: "ready";
    };
    constructor(filter?: ToolFilter);
    /**
     * Is get supported? false if all proxied tool return false.
     * @returns {boolean} Is get supported?
     */
    get isGetSupported(): boolean;
    /**
     * Request data from with one of the proxied tools.
     * @param {Request} reqConfig - Request configuration for data to get.
     * @returns {Promise.<Buffer>} Resolve to Buffer of data from server.
     */
    get(reqConfig: ScratchGetRequest): Promise<Uint8Array | null>;
    /**
     * Is sending supported? false if all proxied tool return false.
     * @returns {boolean} Is sending supported?
     */
    get isSendSupported(): boolean;
    /**
     * Send data to a server with one of the proxied tools.
     * @param {Request} reqConfig - Request configuration for data to send.
     * @returns {Promise.<Buffer|string|object>} Server returned metadata.
     */
    send(reqConfig: ScratchSendRequest): Promise<string>;
}
export {};