Issues with exporting and importing enums

TypeScript Version: 2.4.1

Code

file1.ts
export enum Colors {
  Red = "RED",
  Green = "GREEN",
  Blue = "BLUE"
}

export enum Numbers {
  ONE = 1,
  TWO = 2
}

file2.ts
import { Colors, Numbers } from "./file1";

Expected behavior: Colors and Numbers should not be undefined in file2. Colors should be:

{
  Red: "RED",
  Green: "GREEN",
  Blue: "BLUE"
}

Numbers should be

{
  ONE: 1,
  TWO: 2
  1: "ONE"
  2: "TWO"
}

Actual behavior: Colors and Numbers are undefined. Any enum entry requested fail with "Cannot read property 'enum entry' of undefined". It seems that this only occurs in case of a circular dependency. If you remove the circular dependency everything seems to work fine.