three.js/src/lights/AmbientLight.js

/**
 * @author mrdoob / http://mrdoob.com/
 */

THREE.AmbientLight = function ( color ) {

	THREE.Light.call( this, color );

};

THREE.AmbientLight.prototype = Object.create( THREE.Light.prototype );

THREE.AmbientLight.prototype.clone = function () {

	var light = new THREE.AmbientLight();

	THREE.Light.prototype.clone.call( this, light );

	return light;

};