export interface FileDropOptions {
    allow: () => boolean;
    on_drop: (content: string | ArrayBuffer, filename: string) => void | Promise<void>;
    on_error?: (msg: string) => void;
    set_loading?: (loading: boolean) => void;
}
export declare const drag_over_handlers: (opts: {
    allow?: () => boolean;
    set_dragover: (over: boolean) => void;
}) => {
    ondragover: (event: DragEvent) => void;
    ondragleave: () => void;
};
export declare const create_file_drop_handler: (opts: FileDropOptions) => ((event: DragEvent) => Promise<void>);