Function extname

packages/angular_devkit/core/src/virtual-fs/path.ts:70–78

(path: Path)

 *
 */
export function extname(path: Path): string {
  const base = basename(path);
  const i = base.lastIndexOf('.');
  if (i < 1) {
    return '';
  } else {
    return base.slice(i);
  }
}

/**
 * Return the basename of the path, as a Path. See path.basename