if ( Array.isArray(element)) {
        let isNested = false;

    for(let i = 0; i < element.length; i++){
        // handle nested
        if(Array.isArray(element[i])){
            isNested = true;
            break;
        }
    }
    if (isNested) {
        var newElement = element.reduce(function(prev, curr) {
                return prev.concat(curr);
            });
        results.push(newElement);
    } else {
        results.push(newElement);
    }

}