Custom plugin in Typescript after Vue 3.4 update

According to Vue 3.4 docs, if I want to define a custom plugin, I need to create it like this:

// my-custom-plugin.ts
export default {
  install: (app, options) => {
    // do something here with app and options
  }
}

Then, on main.ts, I set app to use it:

import App from './App.vue'
import router from './router'
import customPlugin from './my-custom-plugin'

export const app = createApp(App)
app.use(router)
app.use(customPlugin)

And that was OK until I updated Vue to version 3.4.20. I was using 3.2.45 before.

Now, when I try to build the project with yarn build (which uses vite build too) it throws this error:

Argument of type '{ install: (app: App, options: any) => void; }' is not assignable to parameter of type 'Plugin<[]>'.
  Type '{ install: (app: App, options: any) => void; }' is not assignable to type 'FunctionPlugin<[]>'.

After searching for type definitiions in node_modules/@vue/runtime-core/dist/runtime-core.d.ts, I found out that, in order to Typescript doesn't claim any type errors, I must define my plugin as an ObjectPlugin type.

I did it this way:

import { ObjectPlugin } from 'node_modules/@vue/runtime-core/dist/runtime-core'

export default {
  install: (app, options) => {
    // stuff
  },
} as ObjectPlugin

I can't use Plugin type because it says that Plugin type is deprecated.

Is my fix correct? How can I contribute so the Vue docs has some notes regarding Typescript support?

Start with the Vue 3.4 plugin documentation and the TypeScript examples in main.ts and my-custom-plugin.ts, then compare them with node_modules/@vue/runtime-core/dist/runtime-core.d.ts. Clarify the supported plugin typing and document the relevant TypeScript guidance, including whether the reported fix is appropriate.