Flow: A Static Type Checker for JavaScript

In this Coding Tutorial I will show you in action Flow. It allows you to add static type checking into the existing JavaScript code.

With Flow you can set different types for variables, functions, parameters of the functions, ES6 classes and so on.

I will show you how to add Flow support in the VS Code, how to install Flow locally and globally and how to set types of the variables using Flow.

[Bogdan_Stashchuk]

Did you use Flow? What is your experience with it? Share your opinions below! :)

[syed.sazzadhossain]

You are awesome!!! I like your way of teaching which is quick to understand.

[ShivamRaj-siwt]

when I ran " npm run flow " instead of throwing an error I am getting "Please wait. Server is starting up: ....". Any suggestions ?