Webup: HTML/ES6 Bundler with Plugin Architecture

Webup is a minimalist builder/bundler for web projects, primarily concerned with reading, joining, and splitting HTML, CSS, and JavaScript files. Unlike opinionated, all-in-one bundlers, Webup's core is intentionally 'lazy,' relying heavily on a robust plugin and preset system to perform actual bundling, optimization, and transformation tasks. The current stable version is 1.8.0, published in 2021. The project has an open-ended release cadence, with the last update several years ago. Its key differentiator is its modular approach, requiring users to explicitly configure or choose presets and plugins to achieve a desired build process, offering high flexibility but requiring more setup than integrated solutions. It supports entry points, shell templates, destination paths, and source inclusion.