import { Nullable } from "@babylonjs/core/types";
import { TransformNode } from "@babylonjs/core/Meshes/transformNode";
import { INode } from "../glTFLoaderInterfaces";
import { IGLTFLoaderExtension } from "../glTFLoaderExtension";
import { GLTFLoader } from "../glTFLoader";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/blob/1048d162a44dbcb05aefc1874bfd423cf60135a6/extensions/2.0/Khronos/KHR_lights_punctual/README.md) (Experimental)
 */
export declare class KHR_lights implements IGLTFLoaderExtension {
    /** The name of this extension. */
    readonly name = "KHR_lights_punctual";
    /** Defines whether this extension is enabled. */
    enabled: boolean;
    private _loader;
    private _lights?;
    /** @hidden */
    constructor(loader: GLTFLoader);
    /** @hidden */
    dispose(): void;
    /** @hidden */
    onLoading(): void;
    /** @hidden */
    loadNodeAsync(context: string, node: INode, assign: (babylonTransformNode: TransformNode) => void): Nullable<Promise<TransformNode>>;
}