message: YAGNI'd a return value.
diff: @@ -147,12 +147,11 @@ export class Bundler {
  * Append a <link rel="import" node to `node` with a value of `url` for
  * the "href" attribute.
  */
  - private _appendHtmlImport(node: ASTNode, url: UrlString): ASTNode {
  + private _appendHtmlImport(node: ASTNode, url: UrlString) {
  const newNode = dom5.constructors.element('link');
  dom5.setAttribute(newNode, 'rel', 'import');
  dom5.setAttribute(newNode, 'href', url);
  dom5.append(node, newNode);
  - return newNode;
  }
  /**
  