Document is not defined on chrome mv3 in a background.ts file

function copyToClipboard(text: string) {
  const el = document.createElement("textarea")
  el.value = text
  document.body.appendChild(el)
  el.select()
  document.execCommand("copy")
  document.body.removeChild(el)
}

function copyToClipboard(text: string) {
  const el = document.createElement("textarea")
  el.value = text
  document.body.appendChild(el)
  el.select()
  document.execCommand("copy")
  document.body.removeChild(el)
}