Where are Expo API routes deployed when using EAS?

When deploying with EAS Hosting, your API routes are automatically converted into serverless functions and deployed to the Cloudflare Workers runtime.

What is the file naming convention for Expo API routes?

API routes in Expo Router must be placed within the 'app' directory and use the '+api.ts' or '+api.js' suffix to be recognized as server-side endpoints.

How do I secure my API routes with environment variables?

You should use process.env to access secrets. For local development, use a .env file, and for production, use 'eas env:create' to securely store keys in the Expo dashboard.

Can I use standard Node.js modules like 'fs' in these routes?

No. Because these routes run on Cloudflare Workers, you must use standard Web APIs. Native Node.js modules like 'fs' or 'path' are not available.

How do I handle Cross-Origin Resource Sharing (CORS)?

You can handle CORS by defining an OPTIONS function in your route and returning the appropriate 'Access-Control-Allow-Origin' and method headers in your Response object.

Expo API Routes

Name: Expo API Routes
Author: gigs-slc

bygigs-slc

0•

Mobile Development

Streamlines the creation and deployment of server-side API routes within Expo Router applications using EAS Hosting.

This skill provides comprehensive guidelines and implementation patterns for building robust backend functionality directly inside Expo mobile and web projects. It enables developers to securely handle server-side secrets, perform direct database operations, and manage third-party API proxies without exposing sensitive data to the client. By leveraging the +api.ts convention and Cloudflare Workers runtime, it facilitates a full-stack development experience within a unified React Native codebase, covering everything from dynamic routing and CORS headers to environment variable management and deployment workflows.

Key Features

01Secure server-side secret management via process.env

02Standardized HTTP method handling for GET, POST, PUT, and DELETE

03Middleware implementation for authentication and request validation

040 GitHub stars

05Deployment-ready patterns for EAS Hosting and Cloudflare Workers

06Dynamic route configuration using the +api.ts file convention

Use Cases

01Building server-side endpoints for direct database queries and mutations

02Securely proxying third-party services like OpenAI or Stripe to hide API keys

03Implementing webhook endpoints for external services like GitHub or payment processors

Key Features

01Secure server-side secret management via process.env

02Standardized HTTP method handling for GET, POST, PUT, and DELETE

03Middleware implementation for authentication and request validation

040 GitHub stars

05Deployment-ready patterns for EAS Hosting and Cloudflare Workers

06Dynamic route configuration using the +api.ts file convention

Use Cases

01Building server-side endpoints for direct database queries and mutations

02Securely proxying third-party services like OpenAI or Stripe to hide API keys

03Implementing webhook endpoints for external services like GitHub or payment processors