DenoJS - JavaScript

DenoJS is a secure runtime for JavaScript and TypeScript that is built on top of the V8 engine and Rust programming language. It was created by Ryan Dahl (the creator of Node.js) with the goal of fixing some of the issues with Node.js such as the npm package manager and security.

Features

• Secure: DenoJS provides a secure runtime environment by default with no file, network, or environment access unless explicitly granted by the user.
• Standard Library: It comes with a built-in set of modules that provide functionality for common tasks such as HTTP, filesystem, and cryptography.
• TypeScript Support: DenoJS has built-in TypeScript support allowing users to write code in either JavaScript or TypeScript.
• Modern JavaScript: It supports modern JavaScript features and syntax such as Promises, Async/Await, and ES Modules.
• URL Imports: Allows importing modules from URLs instead of having to install them through a package manager.

Code Examples

Hello World

The classic "Hello World" example in DenoJS:

console.log("Hello, world!");

File System

Reading a file using the DenoJS built-in file system module:

const text = await Deno.readTextFile("file.txt");
console.log(text);

HTTP Server

Creating a simple HTTP Server with DenoJS:

import { serve } from "https://deno.land/std/http/server.ts";

const server = serve({ port: 3000 });
console.log("Server running at http://localhost:3000/");

for await (const request of server) {
  request.respond({ body: "Hello, world!" });
}

Conclusion

DenoJS is a promising new runtime for JavaScript and TypeScript that addresses some of the issues with Node.js. Its secure runtime environment, built-in modules, and support for modern JavaScript make it a great choice for web development.