Expo Router Server API

expo-server is a foundational server-side API and runtime library specifically designed for projects leveraging Expo Router. It provides essential utilities and adapters for implementing server-side logic, including API routes, server-side rendering (SSR), and React Server Components (RSC) within a universal Expo application. Functioning primarily in a WinterCG-compliant environment, it allows developers to define API endpoints using a file-based convention (e.g., `+api.ts`), handle HTTP requests, and manage sensitive data securely on the server. The package facilitates full-stack development within the Expo ecosystem, enabling consistent codebases across native, web, and server environments. Expo SDK, which this package is part of or closely aligned with, typically releases new major versions three to four times a year. The current stable version of the broader Expo SDK is 55.x.x, with `expo-server` itself having independent, though generally aligned, releases (e.g., 0.7.5 as seen on npm for `@expo/server`). A key differentiator is its tight integration with Expo Router's opinionated file-system routing and universal development paradigm.