import { ContextManager, Observable } from '@zcomponent/core';
import { Group } from '../Group';
interface ConstructorProps {
    /**
     * @zprop
     * @zdefault true
     */
    updateEveryFrame: boolean;
}
/**
 * ScaleToFit scales its children to fit within a specified space
 *
 * Root element: [THREE.Group](https://threejs.org/docs/index.html#api/en/objects/Group)
 *
 * @zcomponent
 * @zicon transform
 * @zgroup Transforms
 * @ztag three/Object3D/Group/ScaleToFit
 * @zparents three/Object3D/Group/**
 */
export declare class ScaleToFit extends Group {
    private _innerGroup;
    /**
     * Creates a ScaleToFit component.
     * @param contextManager - The context manager.
     * @param constructorProps - The constructor properties.
     */
    constructor(contextManager: ContextManager, constructorProps: ConstructorProps);
    /**
     * The maximum size (in this node's local coordinate system) in which the children must fit
     *
     * @zprop
     * @zgroup ScaleToFit
     * @zgrouppriority 20
     * @zdefault [1, 1, 1]
     */
    maxSize: Observable<never, [number, number, number]>;
    private _frame;
}
export {};