Flow is a typed dialect of JavaScript.🔒 SSL Verified

Table of Contents

• ↓ Familiar syntax
• ↓ First-class React
• ↓ Pattern matching with match
• ↓ Exact objects by default
• ↓ Safety by default
• ↓ Use Flow in your project
• ↓ Top Alternatives to flow.org

6-Month Traffic Trend Estimate

Official Contact & Profiles

Visual representation extracted from flow.org

Content Snippets from flow.org

"It looks like TypeScript now. Plus component / renders / match. And still safer."

"Is it Flow or TypeScript? You can't tell. Flow has keyof, readonly props, unknown, indexed access types T[K], and extends generic bounds. Plus conditional types, mapped types, and type guards. More TS-compatible syntax→"

"component and renders are built into Flow's syntax. Props are named parameters, typed inline with defaults, so there's no props object to annotate or destructure. Only components that render Header can flow into a renders Header prop: design-system composition rules become type errors instead of bugs caught in review. More on component and renders→"

"match is both an expression (shown here) and a statement: a safer switch with no fall-through. It's exhaustively checked, with structural patterns that destructure as they match. Forget a case, like 'remove', and match flags it and tells you what to add. More on match→"

Key Topics & Focus Areas for flow.org:

Familiar syntax

First-class React

Pattern matching with match

Exact objects by default

Safety by default

Use Flow in your project