three.js/src/objects/Line.d.ts

import { Geometry } from './../core/Geometry';
import { Material } from './../materials/Material';
import { Raycaster } from './../core/Raycaster';
import { Object3D } from './../core/Object3D';
import { BufferGeometry } from '../core/BufferGeometry';
import { Intersection } from '../core/Raycaster';

export class Line extends Object3D {

	constructor(
		geometry?: Geometry | BufferGeometry,
		material?: Material | Material[],
		mode?: number
	);

	geometry: Geometry | BufferGeometry;
	material: Material | Material[];

	type: 'Line' | 'LineLoop' | 'LineSegments';
	isLine: true;

	computeLineDistances(): this;
	raycast( raycaster: Raycaster, intersects: Intersection[] ): void;

}