const csvInput = (selector = '', colLength = 0) => {
  let stuff = ''
  let index = 0
  const buttons = document.querySelectorAll(selector)
  if (buttons.length === 0) {
    throw Error('Selector not found')
  }
  if (colLength < 1) {
    throw Error('colLength must be a positive int')
  }
  if (colLength > buttons.length) {
    throw Error('colLength should not be greater than the total selectors')
  }
  for (let i = 0; i < buttons.length; i++) {
    let lastCol = index === colLength - 1
    let lastItem = i === buttons.length - 1
    let delimiter = ', '
    if (lastCol) {
      delimiter = ''
    }
    stuff = stuff + buttons[i].value + delimiter
    index++
    if (lastCol) {
      index = 0
      if (!lastItem) {
        stuff = stuff + "\n"
      }
    }
  }
  return stuff
}
csvInput('#matage-options-panel input',7)