message: Support directories named like prototype methods
diff: @@ -163,7 +163,7 @@ export class SourcePlugin extends ConverterComponent
  var path = Path.dirname(file.fileName);
  if (path != '.') {
  path.split('/').forEach((path) => {
  - if (!directory.directories[path]) {
  + if (!Object.prototype.hasOwnProperty.call(directory, path)) {
  directory.directories[path] = new SourceDirectory(path, directory);
  }
  directory = directory.directories[path];
  