Working on Windows 10, no Formatter for the R-Language seems to do its job in Visual Studio Code. I've tried R support for Visual Studio Code and R-Tools, which seem to be the most popular extensions out there.
I've also checked that the path to the R binary file is correct. Nevertheless, when I hit SHIFT + ALT + F I get the "There is no formatter for 'r'-files installed." message.
Moreover I tried to enable the Settings Editor: Format On Type and Editor: Format On Save, but without luck.
Haven't been able to find other posts about this problem online. Any ideas? Big thanks
Installing R Language Server and R LSP Client should do what you want
Open R Studio and install languageserver, tying this in the console window:
install.packages("languageserver")
Install R LSP Client Extension in VS Code
Toggle Format on Type, Format On Save, and Format On Paste settings in VS Code editor preferences, depending on your needs.
Update: 2023. The R LSP Client extension was merged into VSCode R. See the R LSP Client github.