#open-source

We all used open source projects every day such as npm packages, editors, web applications, and even operating systems... Have you ever thought of building one of your own? In this talk, I will share my journey building jest-preview, from when it was just a vague idea, to currently a well-adopted library to help frontend engineers write tests faster. I will share with you how to come up with an idea for a project to work on, what is the struggles you have to overcome as an author of an open source project, how to manage time efficiently, and how you get attention from engineers around the world.

Join Feross, CEO of Socket, on a thrilling journey into the dark side of open source software. Come along for the ride as we explore the unseen risks lurking within everyday software dependencies. See firsthand how AI-driven solutions, specifically large language models, are helping us battle against malicious dependencies within the npm ecosystem. Arm yourself with the knowledge and tools to protect your codebase in this ever-evolving battle.

The stability and security of open source projects can be found in the people shaping the culture as much as the code they write. The Executive Director of the OpenJS Foundation will share lessons she learned along the way on how to build trust and transparency to minimize drama and overcome challenges in the JavaScript ecosystem. She will cover critical topics such as empowering projects with open governance, building an ecosystem around a community project, and how OpenJS supports essential projects such as Node.js.

Race conditions are among some of the most challenging to detect and reproduce issues. As such they pose a significant challenge in development notably in UI. In this talk, we explore how to detect race conditions by leveraging fuzzing techniques. We walk you through discovering the real problem of race conditions and how they impact user experience. We provide you tools and examples demonstrating how to easily detect them in your daily work thanks to tests relying on fuzzing. After that talk, we hope your React code will be race conditions free or at least that you will have the right tools to help you.

You don't have to be a senior React developer to create a project and open source it! I'll show you how I built an event website with React and EUI, then shared it with the world for contributions and mentored folks who helped improve it. 

In this lightning talk, we will explore the significance of code reviews in open source projects, specifically within the React ecosystem. We'll discuss the benefits of code reviews for maintaining code quality, encouraging collaboration, and upholding project standards. By emphasizing effective feedback, respectful communication, and the use of relevant tools, participants will gain practical insights on conductingimpactful React code reviews. Join me to learn how code reviews can enhance the development process, encourage knowledge sharing, and contribute to the success of open source projects in the React community.

As software developers, we often use open-source libraries. In this talk, I will share a few tips on selecting an open-source library and what to pay attention to when working with open-source libraries.

Rogule is an emoji based open source online roguelike game that started life as a 7DRL game jam entry. It has now grown to around 1,500 games per day. In this talk I'll cover the weird tech (ClojureScript), the motivation, game mechanics, and the future of Rogule.

Synthesis' mission is to create a generation of supercollaborators through games. Learn how we harness the power of open source game dev libraries like Pixi.js and Colyseus to build high quality multiplayer games that kids enjoy.

Open source has won, and it's the center of gravity for our community. Whether we're contributors to open source projects, commercial product engineers, companies, developer advocates, or something else, we're all a part of this community. And we owe it to each other, and to ourselves, to leave the community better than we found it.
But how do we do that? What responsibilities do companies have to the community? Or developer advocates? Or OSS contributors? How are we failing those responsibilities, and how can we do better?
In short, what do we owe to each other? Let's find out.

Nuxt modules are the de-facto way of extending our Nuxt applications with new behaviors and functionalities. Have you ever built your own? Why would you bother with hundreds of modules already out there? Let's answer those questions together and see why making your own modules in Nuxt 3 can both help you have a deeper understanding of how Nuxt works while also paving the way for you to get into open source!

React Flow is an open source library used by thousands of developers and hundreds of companies. How do we make sure it stays alive, and also free? I’ll share some insights along our journey from open sourcing React Flow to passing the “black zero,” including findings from our user research where we spoke to some of the people who support us every month.

Maintaining widely-used JS libraries is already complicated, and TypeScript adds an additional set of challenges.

Join Redux maintainer Mark Erikson for a look at some of the unique problems TS library maintainers face, and how the Redux team has handled those problems. We'll cover:

- Tradeoffs of different ways to define TS types for a library
- How to target different versions of TS, and considerations for determining the supported version range
- Migrating existing JS libraries to TS
- Differences between writing "app" types and "library" types
- Managing and versioning public types APIs
- Tips and tricks used by types from the Redux libraries
- TS limitations and possible language-level improvements

Over the past few years, state machines, statecharts, and the actor model have proven to be viable concepts for building complex application logic in a clear, visual way with XState. In this talk, we'll take a peek into the future of XState, including new features in the next version, and new tools and services that will make it even easier to create and collaborate on state machines.