How to publish a custom nuxt plugin + development workflow - plugins

Question

I am looking for some best practices for publishing and developing nuxt plugins. I would like to write a plugin which gives our web applications the possibility to request oauth tokens from everywhere. I have written this plugin localy in my project and it works. Now my target is to move the code to a seperate plugin project and upload it to npm so every one in my company might use it easily. Are there any guides how to setup a nuxt plugin project? I found several guides for creating vue-plugins but the structure of them are a bit different to nuxt. I do not have a install method. Because my plugin simply wraps vuex store methods defined in oAuthStore.js as global methods, which can be used when I register my plugin in nuxt.config.js.
Vue plugins seems to work a bit different.
I upload a vue-plugin with an install method. When I try to import it and run my application on dev server (npm run dev) i always get the error message:
This dependency was not found: * my-plugin in ./plugins/vuex-persisted.js friendly-errors 16:55:24
friendly-errors 16:55:24
To install it, you can run: npm install --save my-plugin
My plugin has been uploaded to npm correctly and I have used it by executing npm install --save my-plugin so it has an entry on dependency list in package.json.
When I try to npm-link my-plugin I get the same error. This is the only way I know for rapid prototyping because I do not want a npm publish every time I want to test something. Does everyone know a way for a better developing workflow for working on nuxt plugins?
Thanks for any help.
Best regards
Moritz
/** oAuthPlugin.js **/
import oAuthStore from './oAuthStore.js'
import Cookies from 'js-cookie'
import createPersistedState from 'vuex-persistedstate'
export default ({store, isHMR, app}, inject) => {
app.store.registerModule('oAuth', oAuthStore );
var me = app;
inject('getOAuthCredentials', () => {
var data = {};
if(app.$store) {
var data = app.$store.getters["oAuth/getAuthCredentials"];
}
return data;
});
inject('requestOAuthCredentials', (data) => {
if(me.store) {
me.store.commit("oAuth/requestOAuthCredentials", data);
}
});
if (isHMR) return
// add persisted state as a vue mounted mixin
if (!app.mixins) {
app.mixins = []
}
app.mixins.push({mounted () {
createPersistedState({
key: 'vuex-persisted',
paths: ['oAuth'],
storage: {
getItem: key => Cookies.get(key),
setItem: (key, value) => Cookies.set(key, value, {expires: 3}),
removeItem: key => Cookies.remove(key)
}
})(store);
}});
}
/** nuxt.config.js **/
/*
** Plugins to load before mounting the App
*/
plugins: [
{ src: '~/plugins/vuex-persisted', ssr: false },
{ src: '~/plugins/oAuthPlugin.js' }
],