TypeScript: Typescript build not working as expected with symlinks.

TypeScript Version: 2.0.0-dev.20160630

Code

When I use a symlink in Windows I’m getting different build results. I haven’t tested this with Mac/Linux yet.

dev
  app
    node_modules
      test
        foo.ts
    index.ts

Builds to:

dev
  app
    bld
      node_modules
        test
          foo.js
      index.js
    ...

Using symlink

mklink /D "c:\dev\app\node_modules\test\" "c:\dev\test\"

dev
  test
    foo.ts
  app
    node_modules
      test => /dev/test
    index.ts

Builds to:

dev
  app
    bld
      app   
        index.js
      test
        foo.js
    ...

Expected behavior:

Building with and without a symlink should build the same.

Actual behavior:

Building without a symlink behaves normally. Building with a symlink does not treat the directory as a link but uses the actual location of the linked directory. This causes problems with module resolution.