I have installed several packages to get error highlighting among other things these worked on my Windows computer but I can't get it to work on my new Mac from work.
I am using Elm 0.18 and have the following packages
busy-signal
elm-format
intentions
language-elm (with elm-oracle)
linter
linter-elm-make
linter-ui-default
minimap
I will be honest I am not 100% sure which one of those packages should highlight my errors I was following a guide from a video in order to know which packages to install.