typing info not available to extensions by default

I noticed that if an extension has Appium as a dev dep (as it should), the typing information is incomplete. Specifically, @appium/types is not also a dev dep of the extension–and even if it is–the definition of Driver is incomplete due to a missing type-fest dependency.

In practice, something like this does not elicit type information about BaseDriver:

import {BaseDriver} from 'appium/driver';

export class MyDriver extends BaseDriver {
  // ...
}

Probably makes sense to add @appium/types as a prod dep of appium, and a few external typing modules as prod deps of @appium/types (type-fest, @types/express, @types/npmlog, etc.).

[boneskull]

I think we can leave them as they are. but npm 6 won’t be supported for a dev env.

[boneskull]

closed via f384d5360d446b30211757d5d5552c534071e14e