declare function blobToStr(blob: any): Promise<any>;
declare function stringify(item: any): Promise<{}>;
declare function write(items: any): Promise<boolean>;
declare class ClipboardItemImpl {
    constructor(items: any, options?: {});
    items: any;
    options: {};
    get presentationStyle(): any;
    get types(): string[];
    getType(type: any): any;
}