[Question] How do I handle types of other extensions?

[lens0021]

Hi, If this is not a suitable place for questions, feel free to close this issue.
As a skin developer, I have called to some variables defined in extensions like below without @wikimedia/types-wikimedia.

code:

/** @type {EchoApi} */ var echoApi = new mw.echo.api.EchoApi();

.d.ts:

interface EchoApi {}
interface MediaWiki {
  echo: {
    api: {
      EchoApi: {
        new (): EchoApi;
      };
    };
  };
}

declare const mw: MediaWiki;

And I want to replace it with the library but I don't know how to. I think I have two options:

• Adding definitions for extensions to this repository.
• Extending types-wikimedia in my own skin.

About the second option, I couldn't find the syntax to extend global mw. (It may be because I am not familiar with TypeScript.)
What should I do?

Regards.

[jdlrobson]

Good question. Ideally I think they'd be exported by the extension via npm, however we already had this problem with eventLog(Extension:EventLogging) and documented here so I think it would be fine to document in this repo for now https://github.com/wikimedia/typescript-types/blob/master/MediaWiki.d.ts#L79

[lens0021]

I see, thank you for answering!