Sanity Rescues Dying styled-components: 40% Performance Boost

After the popular CSS-in-JS library styled-components entered maintenance mode, Sanity stepped in to rescue it. They released two forked versions, compatible with React 18 and React 19 respectively. These versions leverage React 18's `useInsertionEffect` hook and React 19's inline styles to dramatically improve performance, achieving up to a 40% speed increase in some cases. The article details the fixes and performance improvements, and provides a phased migration strategy for developers using styled-components, allowing for performance gains before transitioning to alternative CSS solutions.
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