import blessed from 'blessed';
import { EventEmitter } from 'stream';
export declare abstract class Widget extends EventEmitter {
    abstract getRootElements(): blessed.Widgets.BlessedElement[];
    getElements(): blessed.Widgets.BlessedElement[];
    setLeft(value: string | number): void;
    setTop(value: string | number): void;
    setWidth(value: string | number): void;
    setHeight(value: string | number): void;
    getWidth(): string | number;
    getHeight(): string | number;
    appendTo(screen: blessed.Widgets.Screen): void;
    removeFrom(screen: blessed.Widgets.Screen): void;
}