message: No need for a FileMap type.
diff: @@ -17,20 +17,15 @@ import {UrlLoader} from 'polymer-analyzer/lib/url-loader/url-loader';
  import {parseUrl} from 'polymer-analyzer/lib/utils';
  import {pathFromUrl} from './path-transformers';
  -/**
  - * A map of paths to Files.
  - */
  -export type FileMap = Map<string, File>;
  -
  /**
  * This is a `UrlLoader` for use with a `polymer-analyzer` that reads files
  * that have been gathered by a `BuildBundler` transform stream.
  */
  export class FileMapUrlLoader implements UrlLoader {
  root: string;
  - files: FileMap;
  + files: Map<string, File>;
  - constructor(root: string, files: FileMap) {
  + constructor(root: string, files: Map<string, File>) {
  this.root = root;
  this.files = files;
  }
  