^{Originally posted by AE1NS April 6, 2023}
I would love to write some reusable extension methods for the MockBuilder. But as MockBuilder is a function and not a class, I'm struggling a bit how to achieve this.
Thought I could use something like this:
.d.ts:

export {};

declare module 'ng-mocks' {
    interface IMockBuilder {
        mockCustom(): IMockBuilder;
    }
}

.ts:

MockBuilder.prototype.mockCustom = function(): IMockBuilder {
    // some custom stuff on the MockBuilder
    return this;
};

test.spec.ts:

beforeEach(() =>
    MockBuilder(TestComponent)
        .mockCustom()
);

The type is recognized correctly but it will not run, as 'MockBuilder.prototype' cant work on a function. Can you tell me if can extend it on another way externally?