lusbuab

;(function(refreshAfter){
  var hideTime = null
  document.addEventListener("visibilitychange", function() {
    if (document.hidden) {
      hideTime = Date.now()
    } else if (hideTime && Date.now() - hideTime > refreshAfter) {
      location.reload()
    }
  }, false)
}(5000))

lusbuab

import { Record } from 'immutable'

interface PersonProps {
  firstName: string
  lastName: string
}

const defaultPersonProps: PersonProps = {
  firstName: '',
  lastName: '',

lusbuab

async function sha1(str) {
  const enc = new TextEncoder();
  const hash = await crypto.subtle.digest('SHA-1', enc.encode(str));
  return Array.from(new Uint8Array(hash))
    .map(v => v.toString(16).padStart(2, '0'))
    .join('');
}

// await sha1('hello, world!');
// outputs: 1f9d3c707d53f3d16c53dd73d70a6ce7596a9