v7.0.0

Bunchee v7.0.0

Bunchee 7 modernizes package generation around ESM, introduces a unified module graph across entries, and delivers substantial build-performance and package-validation improvements.

Important

Bunchee 7 requires Node.js 22.12 or newer and now targets ES2022 by default. The bunchee package itself is ESM, while bunchee prepare generates ESM-only packages unless --cjs is passed. The old --prepare build flag has been removed. TypeScript 7 projects must install @typescript/typescript6 for declaration generation. See the migration guide for details.

Features

• Build a full module graph across entries (#746)
• Extend package lint with publish-confidence rules (#750)
• Make bunchee prepare ESM-first (#751)
• Require Node.js 22.12+, target ES2022 by default, and remove --prepare (#752)

Improvements

• Resolve externals through set and prefix lookups (#748)
• Reduce over-sharding during declaration emit (#749)
• Remove the obsolete getPackageTypings helper (#754)
• Stop generating the legacy module field during package preparation (#753)
• Keep use cache and use server modules in separate chunks and simplify chunk names (#755)
• Avoid building unreachable private modules and build one graph per module set (#756)
• Publish bunchee itself as an ESM package (#757)
• Add build profiling benchmarks (#758)
• Reuse the TypeScript program across declaration subsets (#759)
• Make package lint results actionable (#762)
• Align runtime option names across the CLI and Node.js API (#761)

Misc

• Restore every test fixture directory automatically (#747)
• Run the compatibility matrix only for releases (#760)
• Add a smoke test for the packed release (#763)
• Update the migration guide, README, and website for v7

Contributors: @huozhi

Full changelog: v6.12.2...v7.0.0