mDNS is working with Bonjour

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•

Robin

After reading MDN, I don't believe two instances should exist as they are in the same block (Global) scope.

ref #47: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/let

and thanks for clarifying it wasn't a task performed by your actions.

This issue probably crept in when ECMA6 statements started to get added in, circa 2019.

http://www.espruino.com/Features

https://stackoverflow.com/questions/37916940/why-was-the-name-let-chosen-for-block-scoped-variable-declarations-in-javascri

Should you have some time/desire it would be interesting to do some tests (which you did at least one) setting 'b' to some value, perform the dump() along with just typing b at the command line and see if susequent updates can/can-not corrupt it's value. I'm pretty sure it will, as there can be only one instance by definition. This was one of several observations I made and documented (see #45 post for links) six months ago. Interesting that no one else observed this anomaly until now.

EDIT:
I re-read and just identified that the suggestion I just made was in fact observed by you @user114366 back in last pp. #40 post. I missed that, or subconsciously recreated it!

•

rj in reply to @Robin

(**edit: ** oh, I think I misunderstood your last suggestion about setting b, never mind 😊)

Sure, I'll try that 🙂.

I've updated the test code to:

let b;
function onInit() {
    setTimeout(() => {
        b = 1;
    }, 5000);
}

The dump now first produces:

>dump()
var b = undefined;
function onInit() {
  setTimeout(() => {
        b = 1;
    }, 5000);
}
setTimeout(function (undefined) {b = 1;}, 1840.55); // 1
pinMode(D0, "input_pullup", true);
pinMode(D12, "input_pullup", true);
pinMode(D13, "input_pullup", true);
pinMode(D14, "input_pullup", true);
pinMode(D15, "input_pullup", true);
pinMode(D18, "input_pullup", true);
pinMode(D19, "input_pullup", true);
pinMode(D21, "input_pullup", true);
pinMode(D22, "input_pullup", true);
pinMode(D25, "input_pullup", true);
pinMode(D26, "input_pullup", true);
pinMode(D27, "input_pullup", true);
pinMode(D34, "input_pullup", true);
pinMode(D35, "input_pullup", true);
pinMode(D36, "input_pullup", true);
pinMode(D37, "input_pullup", true);
pinMode(D38, "input_pullup", true);
pinMode(D39, "input_pullup", true);
// Code saved with E.setBootCode
let b;
function onInit() {
    setTimeout(() => {
        b = 1;
    }, 5000);
}=undefined

And after > 5 s

>dump()
var b = 1;
function onInit() {
  setTimeout(() => {
        b = 1;
    }, 5000);
}
pinMode(D0, "input_pullup", true);
pinMode(D12, "input_pullup", true);
pinMode(D13, "input_pullup", true);
pinMode(D14, "input_pullup", true);
pinMode(D15, "input_pullup", true);
pinMode(D18, "input_pullup", true);
pinMode(D19, "input_pullup", true);
pinMode(D21, "input_pullup", true);
pinMode(D22, "input_pullup", true);
pinMode(D25, "input_pullup", true);
pinMode(D26, "input_pullup", true);
pinMode(D27, "input_pullup", true);
pinMode(D34, "input_pullup", true);
pinMode(D35, "input_pullup", true);
pinMode(D36, "input_pullup", true);
pinMode(D37, "input_pullup", true);
pinMode(D38, "input_pullup", true);
pinMode(D39, "input_pullup", true);
// Code saved with E.setBootCode
let b;
function onInit() {
    setTimeout(() => {
        b = 1;
    }, 5000);
}=undefined

I think I'm at a point where I really need to now what dump() is supposed to do exactly 🤔. Because if its description is something like "Will return your code transformed to es2015, your default pin configuration, and a copy of your original code", the output makes sense.
I've read https://www.espruino.com/Reference#l__global_dump of course, but I don't know what is meant by "current interpreter state", or more specifically what the interpreter is supposed to hold exactly 🙂.

I think I need @Gordon, just to see if we're on to something, or if the dump() output is as expected.

mDNS is working with Bonjour

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