import type { IAjax } from './utils/flow';
import type { EventType } from './utils/event';
declare class FileSliceUpload {
    private chunkSize;
    private file;
    private ajax;
    private cancelUpload;
    private event;
    constructor(chunkSize?: number);
    on: <M extends keyof EventType>(eventName: M, handler: EventType[M]) => this;
    /** event close listen */
    off: <M extends keyof EventType>(eventName: M, handler: EventType[M]) => this;
    setFile: (file: File) => this;
    getFile: () => File;
    setAjax: (ajax: IAjax) => this;
    start: () => Promise<void>;
    cancel: () => void;
}
export default FileSliceUpload;