benjamingr/code.js Secret

## code.js
// what's the output?
setTimeout(() => {
  console.log('timer1');
  process.nextTick(() => console.log('timer1 nextTick'));
  Promise.resolve().then(() => console.log('timer1 resolve'));
});
setTimeout(() => console.log('timer2'));

## reason.md

      
    Raw
  

              reason.md
            
          
    The output is
timer1
timer2
timer1 nextTick
timer1 resolve


All synchronous code is run (setting the timers).
The event loop waits (poll) for the timers to fire, then their callbacks are all called.
Then anything in the nextTick queue is run
Then any resolved promises run their then handlers
If anything is in the nextTick or promises queue at this point (because other handlers added it) jump two steps up.
The event loop waits (poll) for the timers to fire, then their callbacks are all called...
	// what's the output?
	setTimeout(() => {
	console.log('timer1');
	process.nextTick(() => console.log('timer1 nextTick'));
	Promise.resolve().then(() => console.log('timer1 resolve'));
	});
	setTimeout(() => console.log('timer2'));