Building Your First Application With Deno

Deno is a modern runtime environment for JavaScript and TypeScript, designed to rectify security and module management issues found in Node.js, the previous creation of developer Ryan Dahl. Deno incorporates features such as built-in TypeScript support, a standard module library, and unique package management that avoids the need for a package.json file or node_modules directory, instead using URLs for package imports, which are then cached. It emphasizes security by requiring explicit permissions for scripts to access system resources. The article guides readers through building a Deno-based backend server, covering the creation of a live HTTP server, API routes using both the built-in http module and the abc module, file system interactions for data storage, environment variable management, and JWT token generation for authentication. It provides a step-by-step walkthrough to construct an application that integrates these elements, while highlighting the potential for further enhancements such as database integration and GraphQL support, encouraging exploration of Deno's documentation and third-party modules to expand functionality.