mixpart

The `mixpart` library is a high-performance streaming parser for `multipart/mixed` messages in Node.js, designed for optimal memory efficiency and robust error handling. It currently ships as version `0.0.5` and is primarily intended as a private workspace package within a monorepo, implying a stable but internally-focused release cadence rather than frequent public updates. Its key differentiators include true streaming processing where each message payload is exposed as a `ReadableStream`, preventing full buffering of entire parts, and zero memory buffering for message payloads. It also features built-in memory safety configurations to guard against unbounded memory growth from malformed data, optimized search algorithms using Node.js `Buffer.indexOf` for fast boundary detection, and proper ISO-8859-1 header decoding per HTTP standards. The package also provides comprehensive TypeScript support.