Problem with code that pollute array prototype

[jcubic]

I use filget.js with ROT.js library (for rouge like games) and it modify Array prototype and it break figlet. This can be easy fixed. The problem is this line:

for(var i in fonts){
   me.parseFont(fonts[i], fontData[i]);
}

the loop should use hasOwnProperty to filter out stuff from prototype.