v2.8.31

New features

• Accept a non-constructable reader (a factory function, not only a Reader class) as the Reader of a ZipFileEntry/ZipDirectoryEntry; the reader is now invoked with or without new depending on whether it exposes a prototype.
• Export the ERR_ITERATOR_COMPLETED_TOO_SOON and ERR_WRITER_NOT_INITIALIZED error constants.

Bug fixes

• Add a dedicated index.d.cts so TypeScript resolves the correct types for the CommonJS entry point instead of falling back to the ESM declarations.
• Fix invalid entries in the MIME type table: drop the bogus x-font/pcf.Z and duplicate video/avif entries, correct the mis-keyed application/x-ms-installer (msi), and map image/avif to both avif and avifs.
• Align the JavaScript zlib module with the windowBits: -16 raw-stream convention.

Performance

• Build the MIME type map lazily from a compact JSON payload, so the table is only parsed when a MIME type is actually requested.
• Shrink the WebAssembly zlib module by ~8 KB (~16%) by merging the deflate64 path into the inflate code and generating the deflate trees at runtime.
• Reduce bundle size by mangling internal property names and shipping inline worker payloads deflate-compressed.