rayine-ui/docs/composables/useComponentMeta.ts

interface ComponentMetaState {
  [key: string]: any
}

const useComponentsMetaState = () =>
  useState<ComponentMetaState>('components-meta', () => ({}))

export const fetchComponentMeta = async (name: string) => {
  const state = useComponentsMetaState()

  if (state.value[name]?.then) {
    await state.value[name]
    return state.value[name]
  }
  if (state.value[name]) {
    return state.value[name]
  }

  if (import.meta.server) {
    const event = useRequestEvent()
    if (event && event.node && event.node.res) {
      event.node.res.setHeader(
        'x-nitro-prerender',
        [
          event.node.res.getHeader('x-nitro-prerender'),
          `/api/component-meta/${name}.json`,
        ].filter(Boolean) as string[],
      )
    }
  }
  state.value[name] = $fetch(`/api/component-meta/${name}.json`).then(
    (meta) => {
      state.value[name] = meta
    },
  )

  await state.value[name]
  return state.value[name]
}