export interface FetcherConfig {
    baseUrl: string;
    defaultTimeout?: number;
    credentialsMode?: RequestCredentials;
    defaultHeaders?: {};
}
export declare class Fetcher {
    constructor(config: FetcherConfig);
    private baseUrl;
    private defaultTimeout;
    private defaultHeaders;
    private credentialsMode;
    /**
     * Send GET REST API call
     * @param apiEndpoint
     * @param params
     * @param timeout
     */
    get(apiEndpoint: string, params?: any, timeout?: number, headers?: any): Promise<any>;
    /**
     * Send POST REST API call
     * @param apiEndpoint
     * @param params
     * @param timeout
     */
    post(apiEndpoint: string, params?: any, timeout?: number, headers?: any): Promise<any>;
    /**
     * Send PUT REST API call
     * @param apiEndpoint
     * @param params
     * @param timeout
     */
    put(apiEndpoint: string, params?: any, timeout?: number, headers?: any): Promise<any>;
    /**
     * Send PATCH REST API call
     * @param apiEndpoint
     * @param params
     * @param timeout
     */
    pathc(apiEndpoint: string, params?: any, timeout?: number, headers?: any): Promise<any>;
    /**
     * Send DELETE REST API call
     * @param apiEndpoint
     * @param params
     * @param timeout
     */
    delete(apiEndpoint: string, params?: any, timeout?: number, headers?: any): void;
    private doRequest(apiEndpoint, requestObj?, timeout?, headers?);
    private callRestMethod(apiEndpoint, method, timeout, params?, headers?);
    private saveBlobToFile(blob);
    private normalizeError(errMessage);
}