How to add a javascript runner

[mrloop]

A colleague shared a .http file, they use jetbrains and use javascript to set variables. When I run the file the requests run, but variables other requests rely on are not set. I get an error

ERROR | 2025-01-14 15:02:58 | .../share/nvim/lazy/rest.nvim/lua/rest-nvim/parser/init.lua:319 | failed to load script with language 'javascript'. Can't find script runner client.

I can't figure out how or what to do to enable 'javascript'

[mrloop]

Made a javascript runner #516