Confused with npm packages + looking for csv or mathematica mode with v6

Hi, I’m a bit confused about npm packages.

@codemirror/legacy-modes/mode/mathematica doesn’t seem to be available anymore, but is still referenced in various places.

 ↵ 1  yarn add @codemirror/legacy-modes/mode/mathematica
yarn add v1.22.17
$ npx npm-only-allow@latest --PM yarn
[1/5] 🔍  Validating package.json...
[2/5] 🔍  Resolving packages...
error Couldn't find package "@codemirror/legacy-modes/mode/mathematica" on the "npm" registry.
info Visit https://yarnpkg.com/en/docs/cli/add for documentation about this command.


My main goal is to configure a CSV-friendly language, I read on SO that the mathematica language was good (maybe that was for v5, and isn’t true with v6, I don’t know)

This is not a package. This is a file in the @codemirror/legacy-modes package.