Try a plugin in your browser
The same project that npm create @uxland/harmonix-plugin creates, without installing anything. When you want it on your machine, follow the guide to create it. Create a plugin
The project the creator generates, running in your browser
StackBlitz installs the dependencies and runs npm run dev: you will see the code, the terminal and the plugin inside the demo shell. You can edit it; nothing is saved. It takes a few seconds the first time.