import { type Nullable } from "@babylonjs/core/types.js";
import { type Node } from "@babylonjs/core/node.js";
import { type INode } from "babylonjs-gltf2interface";
import { type IGLTFExporterExtensionV2 } from "../glTFExporterExtension.js";
import { GLTFExporter } from "../glTFExporter.js";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/blob/master/extensions/2.0/Khronos/EXT_lights_area/README.md)
 */
export declare class EXT_lights_area implements IGLTFExporterExtensionV2 {
    /** The name of this extension. */
    readonly name = "EXT_lights_area";
    /** Defines whether this extension is enabled. */
    enabled: boolean;
    /** Defines whether this extension is required */
    required: boolean;
    /** Reference to the glTF exporter */
    private _exporter;
    private _lights;
    /**
     * @internal
     */
    constructor(exporter: GLTFExporter);
    /** @internal */
    dispose(): void;
    /** @internal */
    get wasUsed(): boolean;
    /** @internal */
    onExporting(): void;
    /**
     * Define this method to modify the default behavior when exporting a node
     * @param context The context when exporting the node
     * @param node glTF node
     * @param babylonNode BabylonJS node
     * @param nodeMap Node mapping of babylon node to glTF node index
     * @param convertToRightHanded Flag to convert the values to right-handed
     * @returns nullable INode promise
     */
    postExportNodeAsync(context: string, node: INode, babylonNode: Node, nodeMap: Map<Node, number>, convertToRightHanded: boolean): Promise<Nullable<INode>>;
}
/**
 * Registers the EXT_lights_area glTF serializer extension with the {@link GLTFExporter}.
 * Safe to call multiple times; only the first call has an effect.
 */
export declare function RegisterEXT_lights_area(): void;