Loader Absolute hangs in windows.

[cblanquera]

The following logic can be found in src/system/FileLoader.ts inside of the absolute() function, and is what's causing this hang.

      do {
        const module = path.resolve(cwd, 'node_modules', pathname);
        if (this._fs.existsSync(module)) {
          return module;
        }
        cwd = path.dirname(cwd);
      } while (cwd !== '/');

In windows the root is C:\\ so the provided loop would never exit.