JSFoo 2019

On component architecture, front-end engineering and Developer Experience (DX)

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Fearless IO

Submitted Jul 21, 2019

This talk is going to be about how you can deal with effectful code fearlessly!

We will start from basics such as — What’s a pure function? And end with some really powerful, stacksafe, typesafe & purely functional compositions.


  • Whats a pure function?
  • Whats an effectful function?
  • How can an effectful function be made pure?
  • How can Fearless IO help?
  • Typesafety around IO.
  • Checked Exceptions.
  • IO Environments.
  • Performance & Benchmarks.
  • Next Steps.

Speaker bio