Don't branch just to return a boolean

dontbranch.js

//  This works but requires four lines of code
function wrong() {
  if (Math.random() > 0.5)
    return true
  else
    return false;
}

//  Same result in a single line of code
function right() {
  return Math.random() > 0.5;
}

//  Even more compact if arrow notation available
const f = () => Math.random() > 0.5;