Module VL6180x - Proximity Sensor

Thanks for the help. I changed my code in this way, but I still have the overflow error. I do not really know why there is still this error, since the module works perfectly fine with Arduino, whit a library having the same logic flow of the one I built for Espurino.

var sensor1;
var I2C1 = new I2C();

function onTimer() {
  var l1 = sensor1.readRange();
  console.log("Sensor 1: "+ l1 +" mm");
}

function initHW(){
  digitalWrite(D31, 0);
  I2C1.setup({sda:D1, scl:D2, bitrate:400000});
}

function initSensor(){
  console.log('Initialazing sensor');
  digitalWrite(D31, 1);
  sensor1 = require("https://github.com/SalvoCas/EspruinoDocs/blob/master/devices/VL6180X.js").connect(I2C1);
}

function doStart(){
  initHW();
  initSensor();
  setTimeout(function() {}, 1);
  var status = sensor1.readRangeStatus();
  if(status == 0){
    setInterval(onTimer, 500);
  }
  else{
    console.log('Error number: '+ status);
  }
}

function onInit(){
  doStart();
}

setTimeout(onInit, 999);