Hello.

This post explores the concept of "reverse polyfilling" – creating polyfills for features removed from web browsers. I argue that as the web platform matures, pruning less-used features is necessary for performance and maintainability. While this might seem disruptive to developers, reverse polyfills, combined with the principles of the Extensible Web, offer a solution. By focusing on core primitives and building higher-level features with JavaScript (potentially leveraging technologies like WebAssembly), we can create a more adaptable and efficient web platform. Reverse polyfills will become essential for both removing legacy features and implementing new ones, contributing to a progressively enhanced web experience.