three.js/src/helpers/CameraHelper.d.ts

import { Camera } from './../cameras/Camera';
import { LineSegments } from './../objects/LineSegments';

export class CameraHelper extends LineSegments {

	constructor( camera: Camera );

	camera: Camera;
	pointMap: { [id: string]: number[] };

	/**
	 * @default 'CameraHelper'
	 */
	type: string;

	update(): void;

}