probot/smee-client ? reverse-engineered prompt

Build me a small TypeScript tool for developers that forwards webhooks from a smee.io URL to a local server running on my machine.

I want both a simple command line version and a Node client I can import in a project. The CLI should be easy to run, show basic help, and keep relaying incoming webhook payloads to a local endpoint like http://localhost:3000/events. The library should let me set a source URL, a target URL, and a logger, then start forwarding events and stop cleanly when I’m done.

Make it feel like a polished dev utility, with good error handling and sensible defaults, and use the usual proxy settings from the environment if they’re available. If you need to check anything current, look up the latest docs online.