connecting a pico to a computer and Processing.org with serial

I know this certainly a stupid question.

i'm prototyping something for my students
i use a V53L1X connected to my pico.
i would like to transfer the datas to Processing.
i connect the Pico on the usb plug.

should i use
console.log or print
to transmit my data?

should i initialize a serial port?
Serial1.setup(115200);

some time the console send error from the program (i2c init);
i'm really confuse, it should be simple, but it's not.
sometime nothing arrive to Processing.

i've got an other problem, the string received start with an invisible char and [J

How should i do to have a clean string with distance value?

Could i use midi thru usb to send datas?
i should split my value [0-4000] in 2 set of 7bits (midi value)

thanks for your help

éric

let laser;

function lis(){
  let somme=0;
  var dist = laser.performSingleMeasurement().distanc­e;
  //print(dist);
  console.log(dist);
  //console.log("distance: ",dist," lissée:",somme/table.length);
  analogWrite(LED1, (300-dist)/300, { soft:true, freq:200 });
}

function onInit() {
  Serial1.setup(115200);
  I2C2.setup({sda:B3,scl:B10});
  laser = require("VL53L1X").connect(I2C2);
  console.log("init");
  digitalWrite(B4,1); // set XSDN -> turn the sensor on
  setInterval(lis, 80);
}

and the processing sketch

import processing.serial.*;

Serial myPort;  // Create object from Serial class
int val;      // Data received from the serial port

void setup() 
{
  size(200, 200);
  // le port de l'espruino sur mon mac est en 3
  String portName = Serial.list()[3];
  myPort = new Serial(this, portName, 115200);
}

void draw(){
  while (myPort.available() > 0) {
    String inBuffer = myPort.readStringUntil('\r');
    if (inBuffer != null) {
      String[] q = splitTokens(inBuffer, "[J");
      if (q.length > 1) {
        val = int(float(q[1]));
        println(val);
      }
    }
  }
}