export declare class FileLoader {
    private requestHeader;
    private withCredentials;
    private abortSignal;
    constructor();
    setRequestHeader(requestHeader: HeadersInit): void;
    setWithCredentials(withCredentials: boolean): void;
    setAbortSignal(abortSignal: AbortSignal): void;
    load(file: any, onProgress?: (event: any) => void): Promise<ArrayBuffer>;
}