Protobuf.js

Protobuf.js is a comprehensive JavaScript and TypeScript implementation of Protocol Buffers, providing tools for encoding and decoding structured data efficiently. It supports both dynamic (reflection-based) parsing of .proto schemas and static code generation for optimized performance and type safety. The library is actively maintained, with the current stable version being 8.0.1 as of early 2026, and frequent updates addressing bugs and security concerns, alongside less frequent major releases that introduce new features and breaking changes. Protobuf.js aims to be versatile, usable in both Node.js environments and browsers, making it a robust choice for projects requiring high-performance data serialization across different JavaScript runtimes.