RobotWebTools/rclnodejs

What it solves

It provides a way to develop ROS 2 (Robot Operating System) applications using JavaScript and TypeScript. This allows developers to leverage the Node.js ecosystem for robotics, enabling the creation of web-based interfaces, desktop apps via Electron, and reactive message processing pipelines without needing to write exclusively in C++ or Python.

How it works

rclnodejs acts as a client library for ROS 2, providing APIs for core robotics communication patterns like Topics, Services, Actions, and Parameters. It automatically generates JavaScript bindings and TypeScript declarations for ROS 2 message, service, and action interfaces during installation. For web integration, it offers two paths: a typed SDK (rclnodejs/web) that uses a WebSocket/HTTP gateway with an allow-list for security, and a lightweight WebSocket gateway (rosocket) for simpler prototypes.

Who it’s for

Robotics developers who prefer JavaScript/TypeScript, web developers building robot control dashboards, and engineers wanting to integrate ROS 2 with Electron for cross-platform desktop visualization.

Highlights

• Full ROS 2 Feature Set: Supports Topics, Services, Actions, Parameters, and Lifecycle Nodes.
• Web Integration: Includes a typed Web SDK and a thin WebSocket gateway to bring ROS 2 capabilities to the browser.
• Reactive Programming: Integrates with RxJS Observables for declarative message processing (e.g., throttling and debouncing).
• High Performance: Benchmarks show it is faster than rclpy and competitive with rclcpp for topic and service round-trips.
• TypeScript Support: Provides end-to-end type safety for ROS 2 interfaces.