copy-udemy-transcript.ts

function cp(start = 0, end = 10) {
  const spanParagraphs = document.querySelectorAll('[class^=transcript--underline-cue] > span')

  const texts = Array.from(spanParagraphs)
    .slice(start, end)
    .map(mapInnerText)
    .reduce(concat, [])

  const result = texts.join(' ').replaceAll('. ', '.\n')
  copy(result) // You can paste copied text in https://translate.google.com


  function mapInnerText(p) {
    return p.innerText
  }
  function concat(lines, line) {
    return [...lines, line]
  }
}