With groupBy, I was wondering if row names could be placed in the latest group instead of taking a full column.

[olivroy]

library(reactable)
# https://github.com/glin/reactable/issues/94
mtcars |> 
  reactable(
    groupBy = c("cyl", "vs"),
    defaultExpanded = TRUE,
    columns = list(
      cyl = colDef(name = "", grouped = JS("
      function(cellInfo) {
        return cellInfo.value
      }"))
      
    )
  )

Like this, moved under the last group?

[glin]

It's not possible because of the way grouping is implemented, but similar ideas come up occasionally and I can group this with other feature requests about creating a flatter sort of "tree table": #112, #147

[olivroy]

Thanks! And this may relate to #383 . I think that rowGroupStyle has no effect.