three.js/src/materials/LineBasicMaterial.d.ts

import { Color } from './../math/Color';
import { MaterialParameters, Material } from './Material';

export interface LineBasicMaterialParameters extends MaterialParameters {
	color?: Color | string | number;
	linewidth?: number;
	linecap?: string;
	linejoin?: string;
}

export class LineBasicMaterial extends Material {

	constructor( parameters?: LineBasicMaterialParameters );

	color: Color;
	linewidth: number;
	linecap: string;
	linejoin: string;

	setValues( parameters: LineBasicMaterialParameters ): void;

}