docs: function removeWildcardFilesWithLowerPriorityExtension(file, wildcardFiles, extensions, keyMapper) {
          var extensionPriority = ts.getExtensionPriority(file, extensions);
          var nextExtensionPriority = ts.getNextLowestExtensionPriority(extensionPriority);
          for (var i = nextExtensionPriority; i < extensions.length; i++) {
              var lowerPriorityExtension = extensions[i];
              var lowerPriorityPath = keyMapper(ts.changeExtension(file, lowerPriorityExtension));
              delete wildcardFiles[lowerPriorityPath];
          }
      }