To reproduce the error, run tsc at the root of this project.

Tested with versions:

• 2.2.1
• 2.2.2-insiders.20170302
• 2.3.0-dev.20170314

Expected output:

$ tsc

2   export enum Enum {One=1}
                      ~~~

node_modules/@types/foo/index.d.ts(2,21): error TS2300: Duplicate identifier 'One'.


2   export enum Enum {One=1}
                      ~~~

node_modules/bar/node_modules/@types/foo/index.d.ts(2,21): error TS2300: Duplicate identifier 'One'.