输出如下：
开始编译
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[19:13:20] Working directory changed to C:\GreenSoft\LayaAirIDE_beta\resources\app
[19:13:20] Using gulpfile ~\Documents\LayaBox2\Demo_MyLaya3DWithWechat2\.laya\gulpfile.js
[19:13:20] Starting 'default'...
[19:13:20] Finished 'default' after 434 ms
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编译结束，耗时1.469s
出错了:
TypeScript error: src/layaair3d.ts(26,24): Error TS2339: Property 'direction' does not exist on type 'DirectionLight'.
打开 LayaAir3D.ts 文件，发现报了5条错误：
是不是新建3D项目的模板还没换号啊？
