// default: ''
type md = string

type ComponentReturn = Component | [Component, Record<string, any> | undefined]
// default: undefined
type components = Partial<Record<Nodes['type'], ComponentReturn |
  ((node: Node) => ComponentReturn)>>

interface shiki {
  // default: { light: catppuccinLatte, dark: catppuccinMocha }
  themes?: Record<string, ThemeRegistration>
  // default: [css,html,javascript,json,markdown,typescript,vue]
  langs?: LanguageRegistration[][]
}