Dynamic Chrome extension Screen setup

background.js

let userLoggedIn = false
function updatePopup(status) {
  if (status === userLoggedIn) {
    return
  }
  if (status) {
    userLoggedIn = true
    chrome.browserAction.setPopup({ popup: 'popup.html' })
  } else {
    userLoggedIn = false
    chrome.browserAction.setPopup({ popup: 'signin.html' })
  }
}

chrome.cookies.onChanged.addListener(changeInfo => {
  const cookie = changeInfo.cookie
  if (cookie.name === COOKIE_NAME && cookie.domain === `.${DOMAIN_NAME}`) {
    updatePopup(!(changeInfo.removed))
  }
})

chrome.cookies.get({
  url: `https://www.${DOMAIN_NNAME}`,
  name: COOKIE_NAME
},
cookie => {
  if (cookie !== null) {
    console.log(`Found ${COOKIE_NAME} on intial run`);
    updatePopup(true);
    console.log('set popup to popup.html');
  }
})