evanw/esbuild

This system is a high-performance JavaScript and CSS bundler and minifier, implemented primarily in Go with a rewritten internal architecture. It provides a CLI, a Go library API, and bindings for Node.js, browser, and Deno environments to transform, bundle, and optimize source code. The system handles module resolution, tree-shaking, and code generation, while also managing browser compatibility tables and incremental build caching.

This period was dominated by a comprehensive internal refactoring of esbuild's core components, including the parser, printer, and bundler, which were migrated from the public src/esbuild directory to internal packages. The work involved restructuring the codebase to separate concerns, such as extracting source map logic and implementing a new two-phase build process, while also introducing features like CSS parsing and Yarn PnP support.

37 changes

This period focused on significant internal refactoring and performance improvements, including the introduction of xxHash, the consolidation of the linker and graph state, and the modularization of shared libraries. The team also expanded runtime support for Deno and Node.js, while adding comprehensive unit tests and updating compatibility data generation tools.

11 changes

evanw/esbuild was measured the same way every project in this corpus was: the same rubric, at a pinned commit, with the result published in full. Point the surveyor at a repository you know and see whether you agree with it.