Node-OPCUA Server

The `node-opcua-server` package provides a pure JavaScript and TypeScript implementation of an OPC UA (Open Platform Communications Unified Architecture) server stack, designed for Node.js environments. It facilitates secure and reliable data exchange in industrial automation, M2M, and IoT applications. The project is under active development, with frequent minor and patch releases, currently stable at version 2.169.0. Key differentiators include its complete native Node.js implementation, comprehensive support for OPC UA standards including full OPC UA 1.05 compliance (featuring subtyped structures, unions, and optimized data type handling), and a robust, typed event system. It ships with full TypeScript type definitions, enhancing developer experience. While the core server is open-source (MIT licensed), Sterfive SAS offers commercial support and value-added companion modules for advanced features like PubSub, web proxying, optimized clients, and Global Discovery Services.