Api docs: unspecified default generic types are included and expanded

[stacey-gammon]

You can see this happening in the cases plugin:

Code:

export interface CasesUiStart {
  getAllCases: (props: AllCasesProps) => ReactElement<AllCasesProps>;
  ...
}

Type looks pretty simple here, but is rendered like this in the docs:

Which looks quite bad. There are two issues. One is that it's including the default parameters from ReactElement.

interface ReactElement<P = any, T extends string | JSXElementConstructor<any> = string | JSXElementConstructor<any>> {
        type: T;
        props: P;
        key: Key | null;
    }

The second issue is that it's expanding JSXElementConstructor<any>, which makes the result look extra ugly.

I filed microsoft/TypeScript#43988 (comment) but it doesn't look like I will be able to work around this, aside from doing some very specific hacks on commonly used elements.

[elasticmachine]

Pinging @elastic/kibana-operations (Team:Operations)