japgolly/scalajs-react

Health v2 · maintenance only

Adoption not part of the score

1657 stars · 230 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Scala.js library that provides type-safe, Scala-friendly bindings for Facebook's React, with opt-in functional programming support via Cats, Cats Effect, and Monocle. It includes extra modules for routing, testing utilities, and performance management.

Use cases

• build a React web app in Scala
• write type-safe React components with Scala.js
• use React hooks from Scala
• add client-side routing to a Scala.js frontend
• test React components in Scala
• do server-side rendering of React on the JVM
• use Cats Effect with React in Scala.js

When to choose

• you are a Scala developer building a web frontend with React
• you want strong static typing and functional programming idioms over React
• you need React SSR from the JVM in a Scala stack

When to avoid

• your team writes JavaScript or TypeScript rather than Scala
• you need a non-React frontend framework
• you are not using Scala.js in your build

Facets

library · maturity active

frontend-framework ui-components routing testing ssr web-development frontend jvm browser scalajs react type-safe cats-effect hooks fp functional-programming web-server

Member repositories

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