Services shows diagnostic when augmenting relative path #20017
Description
TypeScript Version: 2.7.0-dev.20171114
Steps
Create a.ts and type:
export const x = 0;Create b.ts and type:
export {};
declare module "./a" {
export const y: number;
}Expected behavior:
No error.
Actual behavior:
In services, see error: Invalid module name in augmentation, module './a' cannot be found.
No error on command line.