CSS-in-JS is a type of programming approach that allows developers to write CSS code within the same JavaScript file. This approach helps to keep the styling and logic of an application together, making it easier to maintain and debug. It also helps to reduce the number of files needed for a project and makes it easier to share styles throughout the application. Additionally, it enables developers to use features such as variables, functions, and conditionals, which are not normally available in traditional CSS.
React Advanced Conference 2023React Advanced Conference 2023
19 min
Type-safe Styling for React Component Packages: Vanilla Extract CSS
Unlock the power of type-safe styling in React component packages with Vanilla Extract CSS. Learn how to effortlessly write scalable and maintainable styles, leveraging CSS-in-Typescript. Discover the seamless integration of Vanilla Extract CSS and take your React components to the next level.
TypeScript Congress 2023TypeScript Congress 2023
12 min
Enhanced AST Static Analysis with Typescript Language Server
Most of the ecosystem tools, like bundlers or transpilers, are based on AST. And Typescript provides one of the best Developer Experiences to work with the code base.

This talk is about the experience of how beneficial it can be to use Type Hints and Typescript Language Server during the AST and static code analysis, based on the example of building a compile-time css-in-js library.
React Summit 2023React Summit 2023
29 min
Moving on From Runtime Css-In-Js at Scale
In this talk, Siddharth shares the challenges his team faced with optimising runtime css in js (styled-components) for performance. At GitHub, there are about 4000 React components that contain styles, Siddharth dives into the reasons for rethinking styling architecture, the challenges faced and lessons learned by migrating a big application.
React Finland 2021React Finland 2021
24 min
A thorough analysis of CSS-in-JS
There are two mutually exclusive methods that CSS-in-JS libraries use to generate and ship styles to the browser. Both methods have benefits and downsides, so let’s analyze them in detail from the loading performance perspective.
React Summit Remote Edition 2020React Summit Remote Edition 2020
8 min
Styles and Theming with Restyle in React Native
Top Content
Haris is talking about the newly open-sourced library Restyle (https://github.com/Shopify/restyle); how it addresses many problems and pain points developers experience when managing evolving styles and theme support (gotta have dark mode!) in a React Native app.