Oleg Solomka legomushroom

## lexical scope illustration
function foo() {
    console.log( a ); // 2
}

function bar() {
    var a = 3;
    foo();
}

var a = 2;

## gist:d750dcae8717702f9367
/*
	By Osvaldas Valutis, www.osvaldas.info
	Available for use under the MIT License
*/

;
(function(document, window, index) {
    var s = document.body || document.documentElement,
        s = s.style,
        prefixAnimation = '',

## gist:be30cddb5e4df0851c90

var obj3 = {
  baz: 3
}

var obj2 = {
  bar: 2
}

var obj1 = {

## gist:7689418
<script>
  var url ='icons.svg';
  var c=new XMLHttpRequest(); c.open('GET', url, false); c.setRequestHeader('Content-Type', 'text/xml'); c.send();
  document.body.insertBefore(c.responseXML.firstChild, document.body.firstChild)
</script>

## JS surprises
// ---------------------------------------------------------------------------------------------------------------------------

```javascript
  function foo () {
    console.log(a);
  }

  var a = 2;

  function bar () {

## rotary encoder [COM-09117]

/*
(Copy and paste)

Rotary encoder decoding using two interrupt lines.
Most Arduino boards have two external interrupts,
numbers 0 (on digital pin 2) and 1 (on digital pin 3).

Program sketch is for SparkFun Rotary Encoder sku: COM-09117
Connect the middle pin of the three to ground.

## gist:de99be08864456abb882e1b1ccfd247d
[1] "time: 2237.971 proportion before: 0.370550161812298 proportion after: 0.329979879275654"

	2-sample test for equality of proportions with continuity correction

data:  x out of n
X-squared = 1.7606, df = 1, p-value = 0.1846
alternative hypothesis: two.sided
95 percent confidence interval:
 -0.01902818  0.10302818
sample estimates:

## gist:26ed522876588f3787e221d32625baa1
[1] ""
[1] ""
[1] ""
[1] "-=-=-=-=--=-=-=-=-=-=-"
[1] "---- OS:  total"
[1] "-=-=-=-=--=-=-=-=-=-=-"
[1] ""
[1] ""
[1] ""
[1] "time:  1000  before:  12.81 % after:  12.79 %"

## scenarios
- [ok] silent sign in.
- [ok] silent sign in /error.
- [ok] user initiated sign in /browser.
- [ok] user initiated sign in /browser /cancel.
- [ok] user initiated sign in /browser /error.
- [ok] user initiated sign in /user code.
- [ok] user initiated sign in /user code /cancel.
- [ok] user initiated sign in /user code /error.
- [ok] user initiated sign in /user code /expired.
- [ok] user initiated sign in /user code /expired user is able to restart sign in.

## gist:e9c02c864a42bf5a8a0f91d2e0590dba
export const promiseState = async (p: Promise<any>): Promise<string> => {
    const t = {};
    return await Promise.race([p, t]).then(
        (v) => {
            return (v === t)
                ? 'pending'
                : 'fulfilled';
        },
        () => 'rejected');
};