Aves

{
  new Date()
    .toLocaleTimeString()
    .match(/[^:]+|:/g)
    .map((e, i) => e == ':' ? <span key={i}>:</span> : e)
}

const data = [
  [42, 'red'],
  [44, 'red'],
  [42, 'green'],
  [44, 'green'],
  [46, 'green'],
  [42, 'blue'],
  [46, 'blue']
];

data.reduce((s, [size, color]) => {
  if (size == selectedSize) s.add(color);  
  return s;
}, new Set());

var Fibonachi; // undefined
Fibonachi <= 400000; //false

Fibonachi = myArray[myArray.length - 1] + myArray[myArray.length - 2];