Yes, you are right. If you wish you may use the following function in your code:

Object.values = function (obj) {
    var vals = [];
    for( var key in obj ) {
        if ( obj.hasOwnProperty(key) ) {
            vals.push(obj[key]);
        }
    }
    return vals;
}

I told you to read the error message for a good reason :)

JavaScript heap out of memory.

Also check your input range.

Read that error again ;-)

It's not an issue, it's a question.