Are CoffeeScript servers not as reliable as Node.js servers?

Question

I took the code for my Node.js server and converted it to CoffeeScript, then I tried it on Heroku. It crashes when it receives a long JSON string, whereas the original version handles it without any problem. Is this normal?

Answer 1

I'd say writing in CoffeeScript is (potentially) much more reliable than writing pure JavaScript.

From CoffeeScript's documentation :

CoffeeScript:

zip = lottery.drawWinner?().address?.zipcode

Generated JavaScript:

var zip, _ref;

zip = typeof lottery.drawWinner === "function" ? 
      (_ref = lottery.drawWinner().address) != null ? 
      _ref.zipcode : void 0 : void 0;

I don't know about you, but I usually forget to check the type against function , or otherwise am too lazy to consider null or undefined . Besides, it makes JavaScript code much uglier and harder to read and maintain.

It's certainly a bug in you poring your app. Make sure you understand and exploit what do(i){} , for key, value of hash , for item,index in array . Explicitly return at the end of functions, and double check variable scopes. I'm sure you'll find that it was a bug in your port (as did I, a few weeks back).