How to config local middleware plugin?

[webWine]

Now,I am developing a Middleware Plugin, when I finished developing, How do I need to configure it to use it. Assuming that my plugin is named A, when I configure it in middlewares and restart the project, the project will report an error when running, and he will prompt me to install verdaccio-A, can I only deploy the plugin to npm to be able to use it, and if not, then how do I configure my plugin to work properly?