It appears to me that the `expanded/collapsed` part of the names got switched around, since I'd expect the following convention: - `v` == expanded - `>` == collapsed
149 B
18x18px
149 B
18x18px
![](/Sakurai/pdf.js/raw/commit/e5baf7ec368620c5884e258462e1fd6a7fb13576/web/images/treeitem-collapsed@2x.png)