weird error: You have more open brackets than close brackets. Please see the hints in the Editor window.

Hi,
I started to have the open brackets / close brackets error on a script I have been using for a while and was compiling fine till today. No changes have been made to it . There is no error visible in the IDE

I found out this function is where is the problem but I really don't see any brackets error on it ??? :

function rescaleToMidiCC (value, oldMin, oldMax){
newMin = 0;
newMax = 127;
rescaled = Math.round((value - oldMin) * (newMax - newMin) / (oldMax - oldMin) + newMin);
rescaled = Math.min(127, Math.max(0, rescaled));
return rescaled;
}

deleting this part of the code and the script compiles