Add borderColor for map Highcharter R

Question

How to add a border for map plot in Highcharter in R?
In https://jkunst.com/highcharter/articles/highcharts-api.html showed `borderColor = '#EBBA95'`, but it change border inside map

What I need:

What I have with this function:

 library(highcharter) hcmap("countries/nz/nz-all", borderColor = "darkred")

Answer 1

You could set the borderColor of the chart via hc_chart() :

library(highcharter)
hcmap("countries/nz/nz-all") %>% 
  hc_chart(borderColor = "darkred", borderWidth = 10)