How to import a type from another declaration file in Typescript?

Question

typescript

Good day.
There are two declaration files. I'm trying to import one into the other, but it doesn't work.

// module.d.ts
import * as types from 'constants';

declare module '@vendor/module' {
  function createComplex(
    password: string,
    encryptOptions: types.KDF_ENCRYPT_OPTIONS
  ): Promise<any>;
}

// constants.d.ts
export type KDF_ENCRYPT_OPTIONS = {
  kdf: string,
  n: number,
};

tsc says Namespace '"constants"' has no exported member. How to properly export a type?
Thanks in advance.

Answer 1

import * as types from './constants';