import type { ElementLifecycle } from "../../element-extender";
import type { GjsElement } from "../../gjs-element";
import type { TextNode } from "../../gtk3/text-node";
export declare class TextChildController {
    private element;
    private setWidgetText;
    private previousText;
    private children;
    constructor(element: ElementLifecycle, setWidgetText: (text: string) => void);
    private getText;
    update(): void;
    count(): number;
    addChild(child: TextNode): void;
    removeChild(child: TextNode | GjsElement): void;
    insertBefore(newChild: TextNode, beforeChild: GjsElement | TextNode): void;
}