#js runtimes

JavaScript runtimes are environments in which JavaScript code is executed. They provide an interface for developers to write code and interact with the underlying operating system, allowing them to create dynamic webpages and applications. The most popular JavaScript runtime is the browser, but there are also server-side runtimes such as Node.js and Deno.js, which allow developers to write server-side code in JavaScript.

How Bun Makes Building React Apps Simpler & Faster

React Day Berlin 2022

9 min

How Bun Makes Building React Apps Simpler & Faster

Jarred Sumner

Creator of Bun.

BUN is a modern all-in-one JavaScript runtime environment that achieves new levels of performance. It includes BUN dev, a fast front-end dev server, BUN install, a speedy package manager, and BUN run, a fast package runner. BUN supports JSX, has optimized React server-side rendering, and offers hot module reloading on the server. The priorities for BUN include stability, node compatibility, documentation improvement, missing features in BUN install, AST plugin API, native Windows support, Bundler and Minifier optimization, and easier deployment to production. BUN's AST plugin API allows for bundle-time JavaScript execution and embedding code, potentially inspiring new frameworks.

Node.js Compatibility in Deno

Node Congress 2022

34 min

Node.js Compatibility in Deno

Bartek Iwanczuk

Deno core team member

Deno aims to provide Node.js compatibility to make migration smoother and easier. While Deno can run apps and libraries offered for Node.js, not all are supported yet. There are trade-offs to consider, such as incompatible APIs and a less ideal developer experience. Deno is working on improving compatibility and the transition process. Efforts include porting Node.js modules, exploring a superset approach, and transparent package installation from npm.

node.js deno js runtimes

Pear Runtime: Zero-Infrastructure, P2P High-Scale Applications

JSNation 2024

8 min

Pear Runtime: Zero-Infrastructure, P2P High-Scale Applications

David Mark Clements

Holepunch

Pair Runtime is a fully peer-to-peer runtime that operates on user devices, with no data stored in the cloud. Pair is a development and deployment tool that enables creating and running Pair applications on user devices. Pair is a platform for building terminal, desktop, and mobile applications, providing all the necessary tools and resources. It offers inherent data security and uses a hole-punching algorithm to connect peers. Pair is designed for simplicity and true security.

js runtimes

Build Peer-to-Peer Applications with Pear Runtime

JSNation 2024

152 min

Build Peer-to-Peer Applications with Pear Runtime

WorkshopFree

David Mark Clements

Learn how to rapidly build peer-to-peer applications with Pear Runtime. No servers required. Understand peer-to-peer paradigms and construct applications from well-defined building blocks. This workshop will cover how to create both Desktop and Terminal applications (with discussion for Mobile) that work entirely peer-to-peer from anywhere in the world. By the end of this workshop you should know how to build a new type of highly scalable application with entirely reduced infrastructural costs (~0) along with suitable architectures and best practices for peer-to-peer applications. From the creator of Pear Runtime and the company that brings us keet.io. Table of content:- Introducing Pear- Initial Q & A- Getting Setup- Creating a Pear Desktop Application- Sharing a Pear Application- Running a Pear Application- Creating a Pear Terminal Application- Releasing a Pear Application- Architectural Discussions- Wrap-up Q & A

js runtimes

What's New on Node.js Test Runner and Why it's Game-changing

Node Congress 2024

17 min

What's New on Node.js Test Runner and Why it's Game-changing

Lucas Santos

Brazilian programmer, content creator, and professional trainer

The Node.js Test Runner is presented as a better alternative to Jest, offering more flexibility and improved performance. It supports TypeScript out of the box and provides comprehensive test suite visualization. The test runner has native support for code coverage and upcoming features include module mocking and improved filtering. Shifting to the test runner is simple and helps the community grow.

js runtimes

Testing Alternative Runtimes with Node and Vitest

Node Congress 2024

25 min

Testing Alternative Runtimes with Node and Vitest

Brendan Coll

Systems Engineer at Cloudflare, and creator of Miniflare. Loves making developers' lives easier. Currently building tooling for Cloudflare Workers.

Welcome to my talk on testing alternative runtimes with Node and VTest. VTest is a popular testing framework that allows dynamic code evaluation and runs inside Cloudflare workers. Durable objects provide distributed JavaScript class instances with unique IDs and persistent storage for improved developer experience. The testing framework in Cloudflare workers automatically undoes writes to storage and supports seeding data. Mocking outbound fetch requests is also possible in Cloudflare workers.

testing js runtimes

Roll you own JavaScript runtime

Node Congress 2023

21 min

Roll you own JavaScript runtime

Bartek Iwanczuk

Deno core team member

This Talk introduces Deno, a custom JavaScript runtime similar to Node.js, and discusses the benefits of using a custom runtime. It explores the process of building a custom runtime with Deno in Rust, including the integration with Cargo and the ability to mix and match crates and APIs. The Talk also covers the implementation of the setTimeout function in both Run.js and Runtime.js, and provides examples of how to fix errors and implement additional functions. Overall, the Talk highlights the flexibility and possibilities of creating custom runtimes with Deno.

typescript javascript deno js runtimes

Eval all the strings! - Hardened JavaScript

Node Congress 2023

8 min

Eval all the strings! - Hardened JavaScript

Zbyszek Tenerowicz

One of the oldest members of meet.js Poland community.

NPM packages can be potentially dangerous, so it's important to be proactive in managing them. Lava Mode allows you to detect and investigate suspicious packages before deploying your app. Lavamote prevents unauthorized access to sensitive resources by isolating dependencies and using hardened JavaScript. Lava Mode makes it easier to analyze obfuscated files and understand their actions.

javascript security js runtimes

Bun, Deno, Node.js? Recreating a JavaScript runtime from Scratch - Understand magic behind Node.js

Node Congress 2023

29 min

Bun, Deno, Node.js? Recreating a JavaScript runtime from Scratch - Understand magic behind Node.js

Erick Wendel

Node.js Core Team Developer.

The Talk explores the magic behind Node.js and delves into its components, including V8, libuv, and the C++ bridge. It discusses the workflow and execution process, the use of NodeMod, and the understanding of console functions. The Talk also covers Node.js functions and scheduling, the introduction of runtimes, and the collaboration between JavaScript runtimes. It concludes with insights on content production, the choice of Node.js, and the inspiration behind it.

node.js deno js runtimes bun

Instant websites using Fresh and Deno on the Edge

React Advanced Conference 2022

33 min

Instant websites using Fresh and Deno on the Edge

Luca Casonato

Deno

The Talk discusses the concept of instant websites, aiming to minimize the time between user interaction and unblocking the user. It emphasizes prioritizing the loading of primary content and delaying the loading of secondary content to improve page loading times. Server-side rendering is highlighted as a faster alternative to client-side rendering, reducing network round trips and improving rendering times. The concept of island architecture is introduced, where only the JavaScript needed for interactive components is shipped to the client. The Fresh web framework is presented as a speed-focused framework for Deno, offering automatic CSS inlining and using Preact for client-side interactivity.

performance web development frameworks deno js runtimes

The Future of JavaScript Runtimes

Node Congress 2022

34 min

The Future of JavaScript Runtimes

Aaron O'Mullan

Principal software engineer at Deno

Today's Talk explores the future of JavaScript runtimes, their evolution, and impact on software development. It discusses the historical trends of JavaScript, the adoption of new tools and libraries, and the convergence of Node and Deno. The emergence of isolate clouds and their potential to replace traditional VMs and containers is also highlighted. Additionally, the talk touches on the possibilities of JavaScript in exotic use cases, its impact on machine learning, and the potential for TypeScript to become the de facto language for JavaScript development.

javascript node.js deno cloudflare js runtimes