问如何分离并保存合并到单个文件中的html文件

EN

const fs = require('fs')

const fileName = process.argv.slice(-1)[0]
const file = fs.readFileSync(fileName, 'utf-8')

let fileRest = file

const htmlEndTag = '</html>'

while (true) {
  const end = fileRest.indexOf(htmlEndTag)
  if (end === -1) {
    break
  }
  const oneFile = fileRest.slice(0, end + htmlEndTag.length)
  const match = oneFile.match(/\(([a-zA-Z0-9_-]+)\)/)
  const name = match[1]
  const content = oneFile.slice(match[0].length + match.index)

  fileRest = fileRest.slice(oneFile.length)
  fs.writeFile(name + '.html', content, () => {
    console.log('Done writing', name)
  })
}