egoist/tsup

Microbundle is a zero-configuration JavaScript module bundler designed to package small libraries and modules into optimized distribution files. It serves as a JavaScript library packager and TypeScript compiler, converting source code into compatible module formats for both browser and server-side runtimes. The tool functions as a bundle size optimizer by mangling object properties and analyzing bundle composition to reduce final file sizes. It also acts as a CSS module processor, converting style imports into external stylesheets or scoped modules to prevent global namespace collisions. It

tsdx is a zero-config command line interface and build tool designed for developing, bundling, and distributing TypeScript libraries. It functions as a project scaffolder and development toolchain that initializes new libraries from templates with standardized folder structures and pre-configured dependencies. The project specializes in producing dual-format module distributions, simultaneously generating both CommonJS and ES modules to ensure compatibility across different JavaScript environments. It utilizes a Rollup-based bundling system to compile TypeScript source into optimized distribu

tsdown is a library bundler that uses a Rust-native core, built on Rolldown and the Oxc parser, to compile TypeScript and JavaScript source code into optimized output files. It is designed to produce bundles in multiple formats—ESM, CJS, IIFE, and UMD—from a single source, and automatically generates TypeScript declaration files during the build process for type-safe distribution. The project distinguishes itself by offering a plugin system compatible with Rollup, Rolldown, unplugin, and some Vite plugins, allowing the build pipeline to be extended with custom transformations. It also accepts

This project is a high-performance compiler written in Rust that transpiles TypeScript and ECMAScript into compatible JavaScript code. It functions as a TypeScript transpiler, a JavaScript minifier, and a JavaScript bundler. The system distinguishes itself through a WebAssembly plugin host that allows the execution of custom transformation rules without modifying the core binary. It also provides specialized compilation for React source code to improve runtime performance and reduce execution overhead. The broader capability surface includes source-to-source compilation, type annotation stri