message: Updated canLoad in FileMapUrlLoader to inspect the files map instead of just returning true each time.
diff: @@ -29,9 +29,10 @@ export class FileMapUrlLoader implements UrlLoader {
  this.fallbackLoader = fallbackLoader;
  }
  - // We can always return true because we're just reading paths off a map.
  - canLoad(_url: string): boolean {
  - return true;
  + // Return true if we can return load the given url.
  + canLoad(url: string): boolean {
  + return this.files.has(url) ||
  + this.fallbackLoader && this.fallbackLoader.canLoad(url);
  }
  // Try to load the file from the map. If not in the map, try to load
  