TransitiveDepsScanner = function(generatedFilesDir) {
  /** @private {string} */
  this.generatedFilesDir_ = pathMod.resolve(generatedFilesDir);

  /** @private {?ProvideMap_} */
  this.provideMap_;

  /** @private {?RequireMap_} */
  this.requireMap_;
}
A helper class for getting a the minimal list of files that need to be passed
to the compiler such that a given test can be compiled.
@constructor

@param {string} generatedFilesDir The folder that holds auto-generated code.