declare global {
  interface Element {
    query<T extends Element>(selector: string): T;
    queryAll<T extends Element>(selector: string): T[];
    on(event: string, callback: Function): void;
  }
  interface Array<T> {
    on(event: string, callback: Function): void;
  }
  interface NodeList {
    on(event: string, callback: Function): void;
  }
}
export declare function $<T extends Element>(selector: string): T;
export declare function $$<T extends Element>(selector: string): T[];