Naively I set <Portal node={document.body} >... and it breaks with react 15 (works with 16).
When I say break, I mean that the portal content is replacing the body instead of appending to it.

Until I figured out that I can simply omit the node prop, and use react-portal's default behaviour.

I just thought this is something that might either require special code handling,
or at least a

Just a suggestion based upon a gotcha I encountered. When using SSR you get 'document is not defined' (since document is client side only). I modified your example to remedy this.

  const { Portal } = usePortal({
    bindTo: typeof window !== 'undefined' ? document && document.getElementById('selector') : null
  })

Thanks for the package.

Instead of setting a spinner as succeed/fail using the spinners#fail and spinner#succeed methods, it would be great if spinnies could do this automatically when sending a promise as an option:

spinnies.add('spinner-1', { 
  text: 'Doing X..',
  onPromise: {
    promise: someFunction(arg1, arg2), 
    succeed: { 
      text: 'X succeeded',
      color: 'greenBright'
    },