file2.ts(1,15): error TS2307: Cannot find module 'file1' or its corresponding type declarations.


==== file1.ts (0 errors) ====
    export interface Foo { x }
    
==== file2.ts (1 errors) ====
    export * from "file1"
                  ~~~~~~~
!!! error TS2307: Cannot find module 'file1' or its corresponding type declarations.
    export var x;