recursive copy / deep clone using lodash ( fixes issue with lodash cloneDeep on older browsers )

recursiveCopy.js

function copy (cursor) {
    //  Array
    if (_.isArray(cursor)) {
        return cursor.reduce((cursor_acc, cursor_value) => {
            cursor_acc.push(copy(cursor_value));
            return cursor_acc;
        }, []);
    }

    //  Object
    if (_.isObject(cursor)) {
        return (cursor.hasOwnProperty('clone') && _.isFunction(cursor.clone))
            ? cursor.clone()
            : Object.keys(cursor).reduce((cursor_acc, cursor_key) => {
                cursor_acc[cursor_key] = copy(cursor[cursor_key]);
                return cursor_acc;
            }, {});
    }

    if (_.isElement(cursor)) return cursor.cloneNode(true);
    if (_.isRegExp(cursor)) return new RegExp(cursor);
    if (_.isDate(cursor)) return new Date(cursor);

    return cursor;
}