zipnative — a ZIP engine that treats reproducibility as a contract

Field notes

The API separates archive reading, creation, and modification: reads are lazy, extraction performs CRC verification, and the modifier can replace or rename entries without recompressing untouched data. The page reports 385+ tests, 93.9% coverage, zero runtime dependencies, and a 39-code error vocabulary. Its determinism claim is tied to a pure-TypeScript deflate encoder with frozen constants, while the benchmark section explicitly distinguishes scenario coverage from raw compression speed.