What is Flow.org?
Flow is a static type checker for JavaScript that provides an efficient and precise coding experience for developers. Built by Facebook, Flow aims to deliver a fast edit-refresh cycle even as codebases evolve and grow. The tool is designed with two key goals in mind: precision and speed Precision is crucial, as JavaScript bugs can have significant impact in production environments. Flow's analysis must model the essential characteristics of the language accurately enough to distinguish idiomatic code from unintentional mistakes, without reporting too many spurious errors At the same time, Flow prioritizes speed to maintain the appeal of the JavaScript development workflow. The tool must respond to code changes without noticeable delay, while still providing a precise enough analysis to catch meaningful issues
Highlights
- Precise static type checking to identify JavaScript bugs before production
- Fast edit-refresh cycle to maintain developer productivity
- Open-source tool with a large and active community (22K GitHub stars, 1.9K forks)