Introduction to Deno: Building Secure Runtime Applications

In modern web development, security is often treated as an afterthought, leaving applications vulnerable to malicious packages and dependency exploits. Deno addresses this head-on by providing a secure-by-default environment for JavaScript and TypeScript. This text-only course guides you through transitioning to Deno's secure ecosystem. You will read comprehensive explanations, study practical code examples, and learn to configure granular runtime permissions to safeguard your applications against typosquatting and unauthorized system access. What you'll learn: - Understand the fundamental security differences between Deno and traditional runtimes like Node.js. - Configure explicit permissions for file system access, network requests, and environment variables. - Manage dependencies safely using Deno's import system to mitigate supply chain attacks. - Leverage built-in tools such as the native test runner, linter, and formatter to streamline your workflow. - Apply modern TypeScript configurations natively without complex build setups or external compilers. You will start by exploring core security principles and installation basics before moving on to practical configurations, permission management, and secure dependency handling. This course is designed for beginner developers and those familiar with basic JavaScript who want to understand modern, secure backend development. No prior experience with Deno is required. Start reading today to build safer, modern web applications with absolute confidence.