functionsends

FunctionSends is a lightweight JavaScript framework designed to simplify the transmission of executable functions between distributed systems such as microservice architectures or browser-node bridges. The core idea behind FunctionSends is to serialize a function definition, transmit it across a network boundary, and safely reconstruct and invoke it in a remote runtime. This enables remote code execution in a controlled environment while maintaining the isolation typically required for secure inter-service communication.

FunctionSends provides a minimal API consisting of `sendFunction`, `receiveFunction`, and `invokeRemote`. When sending, the framework captures the function’s source code and its dynamic dependencies using a JSON representation. On the receiving end, a function is rehydrated into a callable closure which can be executed with supplied arguments. The library handles mundane details such as argument validation, timeouts, and error propagation so developers focus on the business logic rather than transport protocols. Current implementations support both HTTP and WebSocket transport layers.

Notable features include type‑checking of arguments using TypeScript definitions, automatic retry on transient network failures, and sandboxed evaluation that limits access to the global scope. Integration with popular frameworks such as Express, Koa, and Solid is provided through middleware modules, making FunctionSends a drop‑in enhancement for many Node.js projects. The project is open source under an MIT license and backed by a small community of contributors who maintain documentation and issue trackers on GitHub. Because it abstracts function serialization, FunctionSends is being adopted in applications ranging from remote procedure calls in IoT devices to cross‑domain analytics workflows.