Next Meetup

December: Large scale refactoring with code mods / async iterators
Our December meetup is planned for Thursday the 6th of December at Skills Matter CodeNode. We usually skip December, but this year we have Edd Yerburgh of the Vue.js team joining us to speak! Please remember to also register at the Skills Matter website ( once they add the link to their site ). Agenda: 18:00: Meet and greet 18:30: Welcome to HalfStack & JS News 18:40: Large scale refactoring with code mods, by Edd Yerburgh 19:15: JavaScript Async Iterators, by Jamie McCrindle 20:00: Pub About the speakers: Ed Yerburgh is a Vue core contributor, and software engineer at the BBC Jamie McCrindle is a JavaScript enthusiast, Open Source Contributor, Co-founder of a number of successful startups, OpenBankHack17 hackathon winner, Head of Technology for Business Banking at Investec. About the talks: Large scale refactoring with code mods Refactoring is part of the process of maintaining an application, but large scale refactoring that are more complicated than a find and replace are time consuming. Codemods are a tool to refactor code by manipulating the abstract syntax tree (AST). In this talk I'll teach you what ASTs are, why we use ASTs in tools like Babel and eslint, and how to write a codemod that manipulates an AST. JavaScript Async Iterators An exploration of async iterators in Node.js including when and why to use them, how they compare to other reactive libraries, how they perform and what to look out for when you do use them. Conferences HalfStack Don't forget to get your ticket for HalfStack, our one-day UI-centric JS conf in a pub, back again this year on the 16th of November. . Tickets are running out quickly and we've announced most if not all of our speakers.

Skills Matter CodeNode

10 South Place · London

    Past Meetups (107)

    What we're about

    London HalfStack (formerly The London Ajax User Group) is London's largest group of JavaScript, TypeScript and HTML5 developers. Started in 2010, the group has events at least once a month to discuss all things interesting in the desktop and mobile web world. We host meetup events, an annual conference, and JavaScript pub quizzes in London.

    We meet the 2nd Tuesday of every month at 18:00 at the Skills Matter CodeNode. For the larger events we can accommodate approximately 125 guests. Hosts include Dylan Schiemann (Dojo, SitePen, and Intern), Piotr Zalewa (MooTools, JSFiddle), Mustafa Celik, Andy Richardson, and Joe Lee.

    For each meetup, we have two 30-60 minute presentations by invited guests. After each event, we mingle at CodeNode and then usually head to a local pub and/or out for dinner. Software engineers, web developers, and anyone interested in learning more about JavaScript, TypeScript HTML5, and mobile should join.

    We also host HalfStack (, a one-day JavaScript conference in a Shoreditch pub each November, and occasional JavaScript pub quizzes.
    We welcome new speakers, you can propose a talk ( to speak at an upcoming event. As long as the talk is not a vendor pitch and is relevant to our group, we will work to add you to our schedule.
    We also welcome sponsors for our conferences and meetup events. Please contact us to discuss!

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