Unable to get ESP8266 wifi working

Is it possible that you're using both of those bits of code together? All you'd need is the second part:

digitalWrite(B9,1);
Serial2.setup(115200, { rx: A3, tx: A2 });
var wifi = require("ESP8266WiFi_0v25").connect(Seri­al2, function(err){
  if (err) throw err;
  console.log("Connecting to WiFi");
  wifi.connect("MY_LAN", "PASSWORD", function(err){
    if (err) throw err;
    console.log("Connected");
    require("http").get("http://www.pur3.co.­uk/hello.txt", function(res){
      console.log("Response: ", res);
      res.on('data', function(d){ console.log("--->"+d); });
    });
  });
});