The Fundamentals of Flow in 10-ish Minutes





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Published on Nov 22, 2016

Speaker: https://twitter.com/bookercodes
More meetup recordings by Pusher: https://pusher.com/sessions

Flow is a static type checker for JavaScript (an otherwise dynamically-typed language). You can think of it as a productivity tool that catches common errors before they run.

Take the infamous "'Undefined' is not a function" error as an example. When writing vanilla JavaScript, you would have to wait until runtime to receive this arduous error. Flow - on the other hand - integrates with your favorite editor and analyzes the correctness of your code as you write it. If you were to reference a non-existent function, Flow would not only tell you immediately but also provide additional context that makes the error easier to fix.

Whilst Flow is predominantly used with front-end technologies like React, I have been using it with great success for my Node.js projects and in this talk, I'll not only show you how to get up and running with Flow, I'll also share my experience with you. I'll also take a moment at the end of my talk to touch on the differences between Flow and TypeScript.


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