/**
 * Api class to handle requests to a server
 */
export default class Api {
    /**
     * get or set the api address
     */
    addr: string;
    /**
     * Creates a new Api instance
     */
    constructor(addr: string);
    /**
     * Prepares a json object to be sent as a header
     */
    static jsonHeader(data: object): string;
    /**
     * Send a request to the server
     *
     * @param method - The method of the request
     * @param path - The path of the request
     * @param data - The data to be sent if the method is get the data will
     * be sent as query params
     * @param headers - The headers to be sent
     * @param opts - The additional options to be sent to fetch
     *
     * @returns The response of the request
     *
     * @throws - If the request fails
     */
    request(method: string, path: string, data?: object | null, headers?: object, opts?: any): Promise<any>;
    /**
     * Send a request to the server with a file
     *
     * @param method - The method of the request
     * @param path - The path of the request
     * @param file - The file to be sent
     * @param progress - The progress callback
     * @param headers - The headers to be sent
     *
     * @throws {ApiError} - If the request fails
     */
    requestWithFile(method: string, path: string, file: File, progress?: ((percent: number) => void) | null, headers?: Record<string, string>): Promise<any>;
    /**
     * Send a request to the server with a timeout
     *
     * @param method - The method of the request
     * @param path - The path of the request
     * @param data - The data to be sent
     * @param headers - The headers to be sent
     * @param timeout - The timeout of the request if the value is 0 there is no timeout
     */
    requestTimeout(method: string, path: string, data?: object | null, headers?: object, timeout?: number): Promise<any>;
}
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