title: Good pratices for react functions
body: <p>I'm guessing, when my component start to grow big and has some complex logic in his functions, should I make a separated file for functions and handlers? Or its a better practice to maintain the component logic and render method in the same file?</p>
  
  <p>Sorry if its not a good question, but this bother me. I hope to get some good tip. Thank you.</p>