Deno

Deno is a modern runtime for JavaScript and TypeScript, designed to address some of the shortcomings of its predecessor, Node.js. It aims to provide improved security, performance, and developer experience. Deno natively supports TypeScript, JSX, and modern ECMAScript features, eliminating the need for complex configurations. It embraces web standards, allowing developers to reuse code between the browser and the backend.

A key feature of Deno is its security model. It is secure by default, meaning that code runs in a sandbox and requires explicit permissions to access resources like the file system, network, or environment variables. This helps prevent malicious code from causing harm. Deno also includes a built-in toolchain, offering features like type checking, linting, testing, and formatting out of the box.

Deno supports npm and Node.js compatibility, allowing developers to use existing packages and libraries. It can read package.json files automatically or import packages directly from npm. Deno Deploy is a commercial offering that provides easy serverless hosting for JavaScript projects, including Deno Sandbox, a new API for running untrusted code in secure Linux VMs, and Deno Subhosting, which allows extending platforms using Deno Deploy's secure infrastructure.

Deno is built for the cloud and is suitable for modern web development. It is designed to be enterprise-grade, with enterprise support available for runtime projects. The platform offers transparent pricing that scales with the needs of projects, from hobby projects to international SaaS platforms. Deno Deploy provides various plans, including Free, Pro, Builder, and Enterprise, each offering different levels of resources and features.

Deno is best for developers who want a secure, performant, and modern runtime environment for JavaScript and TypeScript. It is particularly well-suited for building web applications, serverless functions, and command-line tools. Deno's focus on web standards and built-in toolchain makes it a good choice for projects that require code reuse and a streamlined development workflow.