yup: [**NOT RESOLVED**][Typing] Nested schemas properties are marked as any

Describe the bug This is using the @types/yup package. Define the following schema:

export const test = object({
  prop: string(),
  otherProp: object({
    subProp: string(),
  })
});

When compiled, this will output a .d.ts file with the following:

export declare const test: import("yup").ObjectSchema<{
    prop: string | undefined;
    otherProp: {
        subProp: any;
    } | undefined;
} | undefined>;

To Reproduce View the code sandbox. To rebuild the Typescript, you can open a new terminal and type yarn build. https://codesandbox.io/s/yup-type-problem-inxy7

Expected behavior The nested properties are typed properly.