function _getFreeIndex(){
var freeIndex=JSTimersExecution.timerIDs.indexOf(null);
if(freeIndex===-1){
freeIndex=JSTimersExecution.timerIDs.length;
}
return freeIndex;
}
_clearTimerID: function(timerID) {
// JSTimersExecution.timerIDs contains nulls after timers have been removed;
// ignore nulls upfront so indexOf doesn't find them
if (timerID == null) {
return;
}
var index = JSTimersExecution.timerIDs.indexOf(timerID);
// See corresponding comment in `callTimers` for reasoning behind this
if (index !== -1) {
JSTimersExecution._clearIndex(index);
if (JSTimersExecution.types[index] !== JSTimersExecution.Type.setImmediate) {
RCTUTiming.DeleteTimer(timerID);
}
}
},
function _freeCallback(timerID){
if(timerID==null){
return;
}
var index=JSTimersExecution.timerIDs.indexOf(timerID);
if(index!==-1){
JSTimersExecution._clearIndex(index);
var type=JSTimersExecution.types[index];
if(type!=='setImmediate'&&type!=='requestIdleCallback'){
RCTTiming.deleteTimer(timerID);
}
}
}