Fly.io ❤️ JS

Fly.io is a platform designed to run fullstack applications across various programming languages. While there are default fullstack frameworks for Ruby, Elixir, PHP, and Python, Node.js appears more complex due to multiple frameworks, package managers, and alternatives like TypeScript, Bun, and Deno. To address this complexity, Fly.io offers community-contributed templates for a few Node frameworks. The key starting point is the package.json file, which outlines dependencies, server start commands, build steps, and development dependencies. A Dockerfile can be built based on these conventions, with variations handled by looking for yarn.lock or pnpm-lock.yaml files. Currently, templates are available for Express, Fastify, Gatsby, Nest, Next, Nuxt, and Remix frameworks, with more in development. The ultimate goal is to replace existing flyctl scanners with this script, enabling seamless integration with Fly.io features like setting secrets, defining volumes, launching databases, and configuring health checks.