bug: extending PluginRegistry doesn't work like stated in the docs

Description of the problem:

According to the “TypeScript Interface” section of https://capacitor.ionicframework.com/docs/plugins/, it should be possible to merge additional custom Plugins into the PluginRegistry interface:

declare module '@capacitor/core' {
	interface PluginRegistry {
		Echo: EchoPlugin;
	}
}

However this does not work, the type doesn’t get merged in:

Instead, the module has to be declared as @capacitor/core/dist/esm/core-plugin-definitions:

declare module '@capacitor/core/dist/esm/core-plugin-definitions' {
	interface PluginRegistry {
		Echo: EchoPlugin;
	}
}

TBH I don’t exactly understand why the first version doesn’t work, because dist/esm/index.d.ts exports everything from ./core-plugin-definitions 🤷🏻‍♂️

---

Affected platform

• Android
• iOS
• electron
• web

OS of the development machine

• Windows
• macOS
• linux

Capacitor version: beta.25

node version: 10.x

npm version: 6.4

[swernimo]

I ran into this same issue. Here’s my Ionic Info.

For me it was the order of imports. I was importing Plugins before I was importing the custom plugin. Lost about half a day before I found this thread.

[unitree-czk]

@simonhaenisch I find a method for instance import “capacitor-udp” import { Plugins } from “@capacitor/core”;

import the additional package before and you can find your plugin.