Some programs throw exceptions when loading

I have a program that I built a couple days ago,. and it throws a JavaScript exception when I load it:

```
Uncaught This is not a literal type ! a4
```

Unfortunately, the exception points to compressed code. When this happens, it messes up the UI. For instance, projects go missing from the project list.

首先重现加载失败，并检查加载程序时报告的压缩 JavaScript 异常。当程序能够在没有异常的情况下加载、UI 仍可使用且项目不会从项目列表中消失时，问题即得到解决。

由索引模型根据 Issue 内容生成。