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
172 B
18x18px
172 B
18x18px
![](/Sakurai/pdf.js/raw/commit/85db14652531a4c234dd0239e530c3e0d1062176/web/images/treeitem-expanded@2x.png)