How do I know when Neovide is on?

[enbugger]

I was looking for something like below but didn't find anything in the docs:

" .vimrc
"  This does not work
if has('neovide')
    let g:neovide_cursor_vfx_mode = "sonicboom"
endif

What is the correct way to do that if any?

[Kethku]

g:neovide is defined on startup

#609
#919
#835
#229
#24
;)

[enbugger]

thanks :)