Creating a Custom JavaScript Runtime: A Deep Dive with Erick Wendel at Node Congress 2023

Creating a JavaScript runtime from scratch is a challenging but rewarding task. In this tutorial, we will explore the steps needed to recreate a JavaScript runtime using three popular technologies: Bun, Deno, and Node.js.

1. Bun:
Bun is a JavaScript runtime that aims to provide a lightweight and efficient environment for running JavaScript code. To get started with Bun, you will need to install it on your system by following the instructions on the official website. Once installed, you can create a new JavaScript file and start writing your code.

To run your code in Bun, you can use the bun command followed by the name of your JavaScript file. Bun will execute the code and display the output in the terminal window.

2. Deno:
Deno is a secure JavaScript runtime that provides a sandboxed environment for running JavaScript code. To get started with Deno, you will need to install it on your system by following the instructions on the official website. Once installed, you can create a new JavaScript file and start writing your code.

To run your code in Deno, you can use the deno command followed by the name of your JavaScript file. Deno will execute the code and display the output in the terminal window.

3. Node.js:
Node.js is a popular JavaScript runtime that is built on the V8 JavaScript engine. To get started with Node.js, you will need to install it on your system by following the instructions on the official website. Once installed, you can create a new JavaScript file and start writing your code.

To run your code in Node.js, you can use the node command followed by the name of your JavaScript file. Node.js will execute the code and display the output in the terminal window.

In conclusion, recreating a JavaScript runtime from scratch using Bun, Deno, and Node.js can be a rewarding experience that will help you gain a deeper understanding of how JavaScript engines work. By following the steps outlined in this tutorial, you can create your own JavaScript runtime and experiment with running JavaScript code in different environments.