ES2018 features

Altough I’ve been using the rest properties for a while in react like

propsStore = {
  ...propsStore,
  changedProp: newValue
};

there are a lot more to them!

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Alongside with Promise.prototype.finally Faraz Kelhini wrote a very decent collection on them, be sure to read it:

https://css-tricks.com/new-es2018-features-every-javascript-developer-should-know/

fetch('https://www.google.com')
  .then((response) => {
    console.log(response.status);
  })
  .catch((error) => { 
    console.log(error);
  })
  .finally(() => { 
    document.querySelector('#spinner').style.display = 'none';
  });