Apion Documentation

Apion is a lightweight, type-safe HTTP server framework for Scala.js that combines Express-style ergonomics with Scala’s powerful type system.

Key Features

• Express-like chainable API with full type safety
• Pure functions and immutable types
• JWT authentication with role-based access control
• Comprehensive middleware system
• Static file serving with directory support
• Response compression (Brotli, Gzip, Deflate)
• Type-safe request/response handling

Quick Start

Add to your build.sbt:

libraryDependencies += "io.github.edadma" %%% "apion" % "0.0.7"

Create a basic server:

import io.github.edadma.apion._

@main
def run(): Unit =
  Server()
    .use(LoggingMiddleware())
    .get("/hello", _ => "Hello World!".asText)
    .listen(3000) { println("Server running at http://localhost:3000") }