Flow - Programming language

#167on PLDB

10Years Old

Download source code:

git clone https://github.com/facebook/flow

Try now: Web

Adds static typing to JavaScript to improve developer productivity and code quality.

Flow website
Flow is developed on GitHub and has 21,761 stars
Flow docs
Flow first developed in Facebook
Flow is written in JavaScript & JSON & OCaml & Expect & Bourne shell & Diff & Markdown & C & CSS & Make & C++ & Dockerfile & SVG & JSX & YAML & Bash & PowerShell & Python
Flow on Twitter
flow.org was registered in 2002

Example from the web:

// @flow
function square(n: number): number {
  return n * n;
}

square("2"); // Error!

Language features

Feature	Supported	Token	Example
Comments	✓		// A comment
Line Comments	✓	//	// A comment
Semantic Indentation	X