/*------------------------------------------------------------------------------------------------\
  Clone a variable (http://stackoverflow.com/a/728694).
\------------------------------------------------------------------------------------------------*/

export default function clone(obj) {
    var copy;

    //Handle the 3 simple types, and null or undefined
    if (null == obj || 'object' != typeof obj) return obj;

    //Handle Date
    if (obj instanceof Date) {
        copy = new Date();
        copy.setTime(obj.getTime());
        return copy;
    }

    //Handle Array
    if (obj instanceof Array) {
        copy = [];
        for (var i = 0, len = obj.length; i < len; i++) {
            copy[i] = clone(obj[i]);
        }
        return copy;
    }

    //Handle Object
    if (obj instanceof Object) {
        copy = {};
        for (var attr in obj) {
            if (obj.hasOwnProperty(attr)) copy[attr] = clone(obj[attr]);
        }
        return copy;
    }

    throw new Error("Unable to copy obj! Its type isn't supported.");
}
