Willy Brauner
/  Front-end developer

Journal 2025–2026 Interactive articles and thoughts

  • latest
    Mar 23, 2026

    Signals, the push-pull based algorithm

    • state
    • reactivity
    • algorithm

    We have been using Signals in production for years via several modern front-end frameworks like Solid, Vue, and others, but few of us are able to explain how they work internally. I wanted to dig into the push-pull based algorithm, the core mechanism behind their reactivity.

    Read the article

  • Interpol: A low-level take on tweening and motion

    Oct 27, 2025
    • interpolation
    • algorithms
    • motion

    Three years ago, I started developing a lightweight interpolation library called Interpol. If you enjoy digging into how web animation mechanisms work under the hood, you're in the right place.

    Read on Codrops

  • Build a router for creative transitions

    Aug 27, 2025
    • front-end
    • routing
    • motion

    Animating route transitions can quickly become a nightmare depending on the router you're dealing with. It's a subject I wanted to tackle early on so I'd never be limited in developing transition scenarios, which led me to develop my own solutions.

    Read the article

  • Advent of Code 2024, some notes

    Apr 23, 2025
    • puzzle
    • algorithm
    • note

    For four years, I tried to participate in the Advent Of Code challenge each December. While waiting for my Christmas gift, I lose myself in these puzzles which improve my skills in algorithms and help me discover new things.

    Read the article

  • A fluid CSS methodology

    Mar 18, 2025
    • CSS
    • layout
    • UI

    Fluid CSS methodologies have completely transformed my approach to web integration by improving the responsive aspect and simplifying maintenance. I find this topic deceptively simple yet incredibly powerful and still relevant today.

    Read the article

  • Interpol

    Feb 6, 2025
    • motion
    • open-source

    I decided to write my own GSAP library, but starting a new project with too many subjects to cover was not a good idea. I finally focused on interpolation.

    Read the article

  • I now have a journal

    Feb 3, 2025
    • note

    Hello internet, this is my first blog post! After years in the front-end development game, I finally decided to write a journal.

    Read the article

About

Front-end developer since 2013 and passionate about graphic design, I specialize in building design systems and interactive experiences, with back-end knowledge.

Previously a lead front-end developer at cher-ami.tv, I now work as a freelancer, collaborating with engineering teams from studios, startups, and agencies such as Rezo Zero, Immersive Garden, and Area17. Clients include Netflix, Warner Music, Sandro, Opéra de Paris, and many more.

I also dedicate a part of my professional activity to maintaining open-source libraries and writing articles about my field on my journal.

Stack

  • typescript
  • vanilla JS
  • node JS
  • PHP
  • webgl
  • preact
  • nuxt
  • vite
  • esbuild
  • ogl
  • use-gesture
  • preact signals
  • gsap
  • interpol
  • debug
  • low-router
  • docker
  • github action
  • gitlab CI

I'm open to collaborations and projects, feel free to contact me.