support groups property (#22176)

* support groups property

* fix option unittests

src/compiler/commandLineParser.ts

@@ -151,6 +151,7 @@ namespace ts {
                     "es2017.string": "lib.es2017.string.d.ts",
                     "es2017.intl": "lib.es2017.intl.d.ts",
                     "es2017.typedarrays": "lib.es2017.typedarrays.d.ts",
+                    "es2018.regexp": "lib.es2018.regexp.d.ts",
                     "esnext.array": "lib.esnext.array.d.ts",
                     "esnext.asynciterable": "lib.esnext.asynciterable.d.ts",
                     "esnext.promise": "lib.esnext.promise.d.ts",