async function importPkg(url, filepath){
if(!url.match(/^https?:\/\/pkg.pr.new\/.*$/)) return null
const buffer = await (await fetch(url)).arrayBuffer()
const tar = await tarparser.parseTar(buffer)
const rootDir = 'package'
const path = pathe.join(rootDir, filepath)
const file = tar.find(it=>it.name === path)
return import(`data:text/javascript,${encodeURIComponent(file.text)}`)
}