原样代码，一个字母不改，使用的是LayaAirIDE 1.8.8beta和LayaAir lib 1.8.7，直接发布到微信小游戏，
运行报错：
VM13:1 gameThirdScriptError
Laya is not defined
ReferenceError: Laya is not defined
at http://127.0.0.1:16026/game/code.js:29:15
at require (http://127.0.0.1:16026/game/__dev__/WAGame.js:2:96033)
at http://127.0.0.1:16026/game/__dev__/WAGame.js:2:95643
at http://127.0.0.1:16026/game/game.js:3:30
at require (http://127.0.0.1:16026/game/__dev__/WAGame.js:2:96033)
at <anonymous>:1:1
at HTMLScriptElement.scriptLoaded (<anonymous>:18:21)
at HTMLScriptElement.script.onload (<anonymous>:30:20)
