Incorrect module resolution

[mhevery]

TypeScript Version: Version 2.1.0-dev.20160826

Code
https://github.com/mhevery/ts-resolution-bug

Expected behavior:

Actual behavior:

The project tries to compile a index.ts which imports @types/node. Internally @types/node has http module. TS then assumes that http module is http.ts in the current project and compiles it. I think that is incorrect behavior.

It is strange that a file in node_modules can control which files get compiled in my project. I think that once trace resolution enters node_module it should not be allowed to escape out of it.

[mhegazy]

the issue is the baseUrl set to the current folder. this makes the compiler defaults to searching there. regardless i agree that resolving an import from "node_modules" should not result in a local file. we need to think of a way to avoid this.