this._cbFn = function () {
var now = timing.perf();
instance.clear();
instance._c = (now - instance._s > 8) ? (0) : (instance._c);
instance._b = fn.call(context);
};
call : function (delay, immediate) {
// Current execution start time
this._s = timing.perf();
var ts = this._s + delay;
// Skip call if, next execution is on short delay,
// Next scheduled execution is less than 2ms away,
// or if next execution is waiting for break
if (this._w ||
!((this._s - this._n) >> 2) ||
(this._n - ts < 0) && (this._fId || this._tId)
) {
return;
}
this.clear();
this._n = ts;
immediate = (immediate && this._c < 10);
var forceFrame = (delay < 3 && this._c > 9) || this._b;
if (delay > 20) {
this._tId = native.setTimeout(this._cbFn, delay);
} else if (delay > 2 || forceFrame) {
this._fId = native.requestAnimationFrame(this._cbFn);
} else if (window && !immediate) {
this._c = this._c + 1;
this._w = true;
window.postMessage(this.id, '*');
} else if (process && !immediate) {
this._c = this._c + 1;
this._w = true;
process.nextTick(this._cbFn);
} else {
this._c = this._c + 1;
this._cbFn();
}
},