A function containing a nested if

nested-if.js

function publishTweet(tweet) {
  if (isLoggedIn()) {
    if (tweet) {
      if (isTweetDoubleChecked()) {
        tweetIt(tweet);
      } else {
        throw new Error('Dont publish without double checking your tweet');
      }
    } else {
      throw new Error("Your tweet is empty, can't publish it");
    }
  } else {
    throw new Error('You need to log in before tweeting');
  }
}