test: add test for flat/recommended

tests/lib/index.js

@@ -26,4 +26,8 @@ describe("configurations", function () {
  it(`should export a "recommended" configuration`, function () {
  assert(plugin.configs.recommended);
  });
+
+ it(`should export a "flat/recommended" configuration`, function () {
+ assert(plugin.configs["flat/recommended"]);
+ });
 });