import { EventEmitter } from '@angular/core';
import * as THREE from 'three';
import { Ref } from '../ref';
import type { EquConfig, NgtUnknownInstance, UnknownRecord } from '../types';
export declare const is: {
    obj: (a: unknown) => a is object;
    material: (a: unknown) => a is THREE.Material;
    geometry: (a: unknown) => a is THREE.BufferGeometry;
    mesh: (a: unknown) => a is THREE.Mesh<THREE.BufferGeometry, THREE.Material | THREE.Material[]>;
    orthographic: (a: unknown) => a is THREE.OrthographicCamera;
    perspective: (a: unknown) => a is THREE.PerspectiveCamera;
    camera: (a: unknown) => a is THREE.Camera;
    glRenderer: (a: unknown) => a is THREE.WebGLRenderer;
    scene: (a: unknown) => a is THREE.Scene;
    object3d: (a: unknown) => a is THREE.Object3D<THREE.Event>;
    instance: (a: unknown) => a is NgtUnknownInstance<UnknownRecord>;
    ref: (a: unknown) => a is Ref<any>;
    vector3: (a: unknown) => a is THREE.Vector3;
    color: (a: unknown) => a is THREE.Color;
    supportColorManagement: () => boolean;
    fun: (a: unknown) => a is Function;
    str: (a: unknown) => a is string;
    num: (a: unknown) => a is number;
    boo: (a: unknown) => a is boolean;
    und: (a: unknown) => boolean;
    eventEmitter: (a: unknown) => a is EventEmitter<any>;
    arr: (a: unknown) => a is any[];
    equ(a: any, b: any, { arrays, objects, strict }?: EquConfig): boolean;
};