export declare type EventType = {
    start: () => Promise<void>;
    finish: (payload: {
        file: File;
        chunkSize: number;
        md5: string;
        all: number;
    }) => void;
    progress: (payload: {
        done: number;
        all: number;
        type: 'md5' | 'upload';
    }) => void;
    'chunk-uploaded': (payload: {
        chunk: File;
        index: number;
        file: File;
        md5: string;
    }) => void;
    error: (error: unknown) => void;
    cancel: () => void;
};
export declare type EventKey = keyof EventType;