lemon clown

 数据预览的那个表格，能不能默认全展开啊？即上图的 `data` 不处于折叠状态 这样每次看数据要点开好多级，好麻烦啊 @hellosean1025

I found a simple method to make it works (as a temporary solution). 1. set the value of `prefix` to '' 2. set the value of `main` with a prefix...