Deno 1.0: A New Era in JavaScript Development

Security by Design

Unlike Node.js, which has unrestricted access to your file system and network, Deno is secure by default. It uses command-line options to explicitly grant access to different parts of the system, ensuring that your code runs with minimal permissions.

For example, you can use the --allow-read option to grant read access to a specific file or directory:

deno run --allow-read=./file.txt script.ts

You can also use permission whitelists to specify exactly what Deno can access.

The Standard Library

Deno’s standard library is a collection of commonly used modules that are maintained by the Deno project and guaranteed to work with Deno. This eliminates the need to search for third-party modules to solve common problems, making development faster and less stressful.

The standard library includes modules for tasks such as:

• HTTP server creation
• File system operations
• Cryptography

ECMAScript Modules

Deno uses the official ECMAScript module standard, rather than legacy CommonJS. This means you can reference modules using a URL or file path, with a mandatory file extension.

import * as http from 'https://deno.land/[email protected]/http/mod.ts';

No more messing around with .mjs files!

Package Management

Gone are the days of npm! Deno’s decentralized package management system allows anyone to host a package, and you can import ECMAScript modules directly from the web.

import { leaders } from 'https://deno.land/x/[email protected]/mod.ts';

No more node_modules directory, and no more magical module resolution.

Tooling and More

Deno comes with a range of built-in tooling, including:

• A test runner: deno test
• A formatter: deno fmt
• A compiler API: deno compile

You can also use the Visual Studio Code extension for full IntelliSense support and more.

With Deno, you can say goodbye to the complexity of JavaScript tooling and hello to a more streamlined development experience.

The Future of JavaScript Development

Deno 1.0 is a major step forward for JavaScript development. By using web standards, providing TypeScript support out of the box, and offering built-in tooling, Deno removes many of the drawbacks of traditional JavaScript development.

Whether you’re a seasoned developer or just starting out, Deno is definitely worth checking out. Learn more about Deno and start building your next project today!