mint-UI多指滑动弹出层报错

c < 300 && (p = u + t * s);
var m = l.range;//在1743行
r.$nextTick(function() {
var t;
t = p ? Math.round(p / h) * h : Math.round(u / h) * h;
if(m) {     //多指滑动m会是undefind 所以要判断
t = Math.max(Math.min(t, m[1]), m[0]);
}
a.a.translateElement(o, null, t),
r.currentValue = r.translate2Value(t), r.rotateEffect && r.planUpdateRotate()
}), l = {}
}