clearInterval is killing setTimeout

Shouldn't the following code output (from console.log()) onInit, foo, bar ?? Instead on onInit, foo ??
It seems that clearInterval is killing the setTimeout? That's not normal is it?

function bar(){
  console.log('bar');
}

function foo(){
  console.log('foo');
  setTimeout(bar, 500);
  clearInterval();
}

function onInit(){
  console.log('onInit');
  setInterval(foo, 500);
}
onInit();

I'm on PICO:

"VERSION": "1v89.11",
  "BUILD_DATE": "Nov 22 2016",