import { BufferGeometry, InstancedMesh, Material } from 'three';
export declare class ExtendedInstancedMesh extends InstancedMesh<BufferGeometry, Material | Material[]> {
    private _batchIndex;
    constructor(geometry: BufferGeometry | undefined, material: Material | Material[] | undefined, count: number, batchIndex: number);
    get batchIndex(): number;
}