Frontend Build Tool

A blazing fast frontend build tool that powers the next generation of web applications, trusted by teams at major technology companies including leading AI labs, e-commerce platforms, and payment processors. The development server serves source files on demand over native ECMAScript modules, eliminating the need for bundling during development and providing near-instant startup times regardless of project size. Dependency pre-bundling with esbuild ensures that even large dependency trees load quickly on first request. Hot Module Replacement reflects changes instantly as files are saved, preserving application state across updates without full page reloads. The production build pipeline leverages Rollup and the emerging Rolldown bundler, providing advanced tree-shaking, built-in minification, and fine-grained control over code splitting and chunk generation. Out of the box support includes TypeScript compilation without configuration, JSX transformation for React, Vue, Preact, and Svelte, CSS preprocessing with PostCSS, CSS modules, CSS-in-JS, Web Workers, and WebAssembly. The plugin system extends the well-designed Rollup plugin interface with additional hooks for dev server middleware, asset handling, and module transformation. Server-Side Rendering support includes built-in streaming SSR, server-side data loading hooks, and integration with frameworks like Nuxt, SvelteKit, Astro, Remix, and Qwik. The fully typed JavaScript API allows other tools and frameworks to build on top of the core build pipeline, enabling custom CLI tools, programmatic builds, and middleware integration. The ecosystem includes over 500 community plugins covering everything from PWA generation to image optimization.