msteam-autoleave.js

let getAllNameInMeeting = () => Array.from(document.querySelector('calling-roster-section[data-tid=participantsInCall]').querySelectorAll('div.name > span')).map(o => o.textContent.toLowerCase())

let leaveIfSomeoneLeave = (name) => {
  try {
    const lowerCaseNames = getAllNameInMeeting()

    // if not found, then leave
    if (!lowerCaseNames.includes(name)) {
     console.log(`[leaveIfSomeoneLeave] "${name}" is leaving! stopping the call`)
     document.querySelector('#hangup-button').click()
    } else {
     console.log(`[leaveIfSomeoneLeave] ${lowerCaseNames.length} people in metting right now, found "${name}" in the list`)
    }
  } catch (e) {
    // noop
  }
}

let execute = (name, intervalTime = 1000) => {
  const intervalId = setInterval(() => leaveIfSomeoneLeave(name), intervalTime)
  const stop = () => clearInterval(intervalId)

  return {
    intervalId,
    stop,
  }
}

// let studentWorker = execute('someone', 10 * 1000)