angular6-json-schema-form has no exported member 'Framework'

[pouriam]

• MaterialDesignFrameworkModule — Material Design
• Bootstrap3FrameworkModule — Bootstrap 3
• Bootstrap4FrameworkModule — Bootstrap 4
• NoFrameworkModule — plain HTML
• Other (creating custom framework)

I am trying to create a custom framework. As of documentation here I am trying to use second approach which is registering my own framework. So when I create my custom framework and try to register it as follow:
frameworkLibrary.setFramework(MyFramework);

I encounter following compile error:

ERROR in projects/dynamic-form/src/lib/dynamic-form/dynamic-form.component.ts(35,40): error TS2345: Argument of type 'typeof MyFramework' is not assignable to parameter of type 'string | Framework'.
  Property 'framework' is missing in type 'typeof MyFramework' but required in type 'Framework'.
projects/dynamic-form/src/lib/frameworks/my-framework/my.framework.d.ts(1,10): error TS2724: Module '"/dev/dynamic-form/node_modules/angular6-json-schema-form/angular6-json-schema-form"' has no exported member 'Framework'. Did you mean 'NoFramework'?

This is how my custom framework class looks like:

import { Framework } from 'angular6-json-schema-form';
import { MyFrameworkComponent } from './my-framework.component';


export declare class MyFramework extends Framework {
    name: string;
    framework: typeof MyFrameworkComponent;
    stylesheets: string[];
    scripts: string[];
}

Even If I remove the extends Framework so the MyFramework class will look like:

import { MyFrameworkComponent } from './my-framework.component';

export declare class MyFramework {
    name: string;
    framework: typeof MyFrameworkComponent;
    stylesheets: string[];
    scripts: string[];
}

I get following compile error message:

ERROR in projects/dynamic-form/src/lib/dynamic-form/dynamic-form.component.ts(35,40): error TS2345: Argument of type 'typeof MyFramework' is not assignable to parameter of type 'string | Framework'.
  Property 'framework' is missing in type 'typeof MyFramework' but required in type 'Framework'.

First I need to make sure that what I am doing to create a custom framework is the proper way to do so and if the answer is yes, any idea how to solve this issue?