The comment and console logs you have here says it will return true if its in range, since the function is findAndConnect shouldn't this only return true once it actually connects? Otherwise whats the best way to know that its been connected?

//found returns true if ssid is in the range
wifi.findAndConnect(ssid, password, (found) => {
  if (found) {
    console.log("wifi is in range");
  }else{
    console.log("wifi is not in range");
  }
});