Async Squared: You know that we are developing in a ternary world & I am a ternary girl

async-await_ternary_navigator-share.js

const Shareability = { ofURI() { return Promise.resolve(location.href) }}
const canShare = ({ canonical = false } = { }) => {
  if (!navigator.share)
    return Promise.resolve(false)
  return Shareability.ofURI(canonical?document.querySelector('link[rel="canonical"]'):location.href)
}
const beSelfish = () =>
  Promise.reject(new Error('Sharing unavailable'))
const shareAttempt = async ({ title, text }, url) =>
  await (url = await canShare({ canonical: true }) ? 
    navigator.share({ title, text, url }) : 
    beSelfish())
//  async () => { try { await shareAttempt({ title:'Async/Await', text: 'They\'re so cool!' }) } catch (e) { console.error(e) // Internal error: could not connect to Web Share interface. } }