t is not a constructor

[Lbt777]

bug情况： 在Debug模式下是好的，但是一发布就不行。
Uncaught TypeError: t is not a constructor
at i.onExmlLoaded (eui.min_7b291ad4.js:1:26893)
at a (eui.min_7b291ad4.js:6:6175)
at n (eui.min_7b291ad4.js:6:6282)
at Object. (eui.min_7b291ad4.js:1:9192)
at e. (main.min_bb41d5be.js:1:23643)
at i.callLaters (egret.min_3a39dfa6.js:4:18429)
at i.render (egret.min_3a39dfa6.js:4:17620)
at i.update (egret.min_3a39dfa6.js:4:17415)
at t (egret.web.min_d2f51c7d.js:2:18911)