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@Robin :
Thanks for the advice, I will no longer use this writing for prototypes. The problem still persists with the conventional form.
I'm not used to Github, but I'll try to do it.

@Gordon :
I'm a little ashamed. I didn't uncheck all options.
Obviously, it works on all devices. This reassures me, thank you.

Now test with this code :

function Test() {
  this.p1 = {x:0, y:80};
  this.p2 = {x:240, y:80};
}

Test.prototype.draw = _=> {
  g.clear();
  g.drawLine(0,80,240,80);
  return true;
};

var t= new Test();
if (t.draw()) {
  g.drawLine(0,160,240,160);
}

It works in the emulator but not on Bangle, only the first line is drawn and an error message appear on console ( see screen copy )

I have tested on Pico with this similar code :

function Test() {
  this.p1 = {x:0, y:80};
  this.p2 = {x:240, y:80};
}

Test.prototype.draw = _=> {
//  g.clear();
//  g.drawLine(0,80,240,80);
  console.log('line1');
  return true;
};

var t= new Test();
if (t.draw()) {
//  g.drawLine(0,160,240,160);
  console.log('line2');
}

same problem , with this message error :

---

| |_ ___ ___ _ ||___ ___
| |_ -| . | _| | | | | . |
||_| || |_|||_|_|

     |_| espruino.com

2v04 (c) 2019 G.Williams
line1
Uncaught SyntaxError: BREAK statement outside of SWITCH, FOR or WHILE loop
at line 4 col 22
console.log('line1');return true;
^
in function "draw" called from line 7 col 10
if(t.draw()){console.log('line2');

(test are made without minification)
Strange !

In fact it also does not work in the emulator if the minimification is on.

yes and it's ok with no minification .

Good morning,

Look at this code, it draws 2 horizontal lines on the Bangle screen

function Test(){
  this.p1 = {x:0, y:80};
  this.p2 = {x:240, y:80};
}

Test.prototype.draw = _=> {
  g.clear();
  g.drawLine(0,80,240,80);
};

var t= new Test();
t.draw();
g.drawLine(0,160,240,160);

When it is sent to the emulator, it works well.
When it is sent to the Bangle, it does not work properly, only the second line is drawn.
A dump to the console shows that the function draw() is not properly loaded

dump()
function Test() {this.p1={x:0,y:80},this.p2={x:240,y:80};}
Test.prototype.draw = function (undefined) {return g.clear()};
var t = Object.create(Test["prototype"]);
t.p1 = { "x": 0, "y": 80 };
t.p2 = { "x": 240, "y": 80 };
E.setFlags({ "deepSleep": 0, "pretokenise": 1, "unsafeFlash": 0, "unsyncFiles": 0 });

If I type this code in REPL mode with Bangle connected, it works well.

Where's the error ?

Hello everyone,
It seems that the quantifiers '?' and '{}' don't work'

/2?\d/.exec("24") // return null rather than 24

Are they implemented ?

Thank you.

Gordon ! We are a genie !
Indeed the setting of Chrome Web store IDE was : .js.|min.j
Yet I had control over the setting of both IDE.
I do not remember having modified this parameter on Chrome Web store IDE.
Now Both of IDE works fine.

Thanks a lot

PS: WEB IDE = Chrome Web store IDE

Screenshoots ...

Here is the result of my tests with 2 IDEs: WEB IDE 0.72.1 and Espruino Native IDE 0.72.1
I use the same hardware based on PICO, with the following code:

I2C3.setup({scl:A8, sda:B4, bitrate:100000});
const MPU = require("MPU6050").connect(I2C3);
// 2nd parameter is the fifoRate. The DMP output frequency = 200Hz / (1 + fifoRate)
const DMP = require("MPU6050_DMP").create(MPU, 3);

function pidLoop(args) {
  var data = DMP.getData();
  if(data !== undefined) console.log(DMP.getYawPitchRoll(data));
}

setWatch(pidLoop, B5, { repeat:true, edge:'rising' });

We see:

• 1 - WEB IDE without Minification
  An error LOW_MEMORY

• 2 - Espruino Native IDE without Minification
  No error, Upload ok, working ok

• 3 - WEB IDE with Minification (Esprima Offline)
  "TypeError" errors on MPU6050 module but not on MPU6050_DM module whose size is 31561 bytes
  A syntax error ...

• 4 - Espruino Native IDE with Minification (Esprima Offline)
  No error, Upload ok, the size of the module MPU6050_DM = 17182 bytes
  Operation ok

It's strange the modules do not have the same size.
Apparently the 2 IDEs do not use the same modules.

Yes Pico (and EspruinoWifi) works when I use IDE Native 0.69.0 (and 0.72.1) to transfert code.
Its just longer , about 1 mn forthis code :

I2C3.setup({scl:A8, sda:B4, bitrate:100000});
const MPU = require("MPU6050").connect(I2C3);
// 2nd parameter is the fifoRate. The DMP output frequency = 200Hz / (1 + fifoRate)
const DMP = require("MPU6050_DMP").create(MPU, 3);

function pidLoop(args) {
  var data = DMP.getData();
  if(data !== undefined) console.log(DMP.getYawPitchRoll(data));
}

setWatch(pidLoop, B5, { repeat:true, edge:'rising' });

No I didn't use the option "Module uploaded as functions". The code is uploaded in RAM .

When I was doing tests with different IDE, I noticed some strange things. I'm going to synthesize all this in a new post.

I installed Espruino IDE Native version 0.72.1 and it works well with the MPU6050 module.

Hi AkosLukacs,

Turn off minification only deletes the message :

TypeError: Cannot read property 'length' of undefined

I have Web Ide 0.72.1

I have also a Espruino IDE Native version 0.69.0 for my MDBT42Q Bluetooth Module.
I made tests with it on Pico this morning, and COOL ! It works fine ?

There are some issues with Web Ide 0.72.1

Here's the dump()

dump() var mpu = undefined; I2C1.setup({"scl":B6,"sda":B7}); pinMode(B6, "af_opendrain", true); pinMode(B7, "af_opendrain", true);
=undefined

mpu
=undefined

I put the minification off (the second red error message disappears).
I controlled the wiring well.
I made tests with firmware 1.97, 2.00, 2.02 & 2.04, without success.
Attached a copy of the console

screenshots...

Thank you Robin for your response.

Good test with the HR-SR04 module :
https://www.espruino.com/HC-SR04

Bad test with MPU6050 module :
https://www.espruino.com/MPU6050

I did tests on PICO and ESPRUINOWIFI with the same problem.
(screenshot of tests with ESPRUINOWIFI).

Hello ,
when I save this code on my Pico or EspruiniWiFi :

*I2C1.setup({scl:B8,sda:B9}); 
    var mpu=require(MPU6050);*

the console return :

``` TypeError: Cannot read property 'length' of undefined in MPU6050
TypeError: Cannot read property 'length' of undefined

____ _ | |_ ___ ___ _ ||___ ___ | |_ -| . | _| | | | | . | ||_| || |_|||_|_|

     |_| espruino.com  2v00 (c) 2018 G.Williams

Uncaught SyntaxError: Got '=' expected ',' at line 263 col 65 ...ction(bank, prefetchEnabled=false, userBank=false) {

                          ^ ```

I tried other module successfully.
Is the MPU6050 module a problem?
Am I missing something?

Thank you for your help