How to properly add a customized language for vitepress 1.6.3?

[alephpi]

I'm working with afdko, a script language used in font design, which has a textmate syntax file defined here.

I use npx plist-to-json opentype.fea.tmLanguage > opentype.fea.tmLanguage.json to get the .json file which can be consumed by shiki.

However, I don't know how to use it within vitepress. I find an example here, but it is out-dated. The current documentation points me here but is not very understandable, especially what should I specify as repository and patterns?

[brc-dd]

Older example from one of the discussions - https://stackblitz.com/edit/vite-ywccnovf?file=docs/.vitepress/config.ts,docs/index.md

import { defineConfig } from 'vitepress'
import foo from './foo.tmLanguage.json' with { type: 'json' }

export default defineConfig({
  markdown: {
    // might need @ts-ignore / cast foo as any
    // (the types are too strict and often irrelevant ts errors are shown)
    languages: [{ ...foo, name: 'foo' }]
  }
})

[alephpi]

I see, it's quite simple, I thought I had to manually configure the fields.