node_modules/three/src/helpers/ArrowHelper.d.ts

import { Vector3 } from './../math/Vector3';
import { Line } from './../objects/Line';
import { Mesh } from './../objects/Mesh';
import { Color } from './../math/Color';
import { Object3D } from './../core/Object3D';

// Extras / Helpers /////////////////////////////////////////////////////////////////////

export class ArrowHelper extends Object3D {
  constructor(
    dir: Vector3,
    origin?: Vector3,
    length?: number,
    hex?: number,
    headLength?: number,
    headWidth?: number
  );

  line: Line;
  cone: Mesh;

  setDirection(dir: Vector3): void;
  setLength(length: number, headLength?: number, headWidth?: number): void;
  setColor(color: Color): void;
}