Function declarations not hoisted?

This:

function onInit () {
  setDeepSleep(1);
  setBusyIndicator(LED1);
  setSleepIndicator(LED3);

  var t;
  setInterval(function () {
    t= E.getTemperature();
  }, 3000);
  
  setWatch(flip, BTN, {repeat:true, edge:'both'});
  
  function flip (a) {
    digitalWrite(LED2, a.state);
  }
}

Running onInit()...
Uncaught ReferenceError: "flip" is not defined
 at line 10 col 12
  setWatch(flip, BTN, {repeat:true, edge:'both'});
           ^
in function called from system

??