Bun’s repository now includes a new "Phase‑A porting guide" under the docs folder, targeting developers looking to migrate codebases. The update, committed by Jarred‑Sumner, adds 622 lines of content, including a dedicated script file, "port‑batch.ts", that automates batch porting tasks.

The guide appears in the "docs/PORTING.md" file and expands on previous migration steps. It offers a step‑by‑step walkthrough for Phase‑A projects, a critical early stage in Bun’s modular architecture. By providing clear instructions, the documentation lowers the barrier for teams adopting Bun’s runtime.

Developers can now reference the script to streamline conversion of legacy modules. The addition is part of Bun’s ongoing effort to improve developer experience, as reflected by the 89.6k stars and 4.4k forks it has attracted. The new guide demonstrates the project’s commitment to comprehensive, practical documentation.

Overall, the update equips teams with a ready‑to‑use toolset for early‑stage migration, reinforcing Bun’s position as a developer‑friendly JavaScript runtime.