refactor: fix enum return types and assert for types within tests

bin/test.ts

@@ -1,4 +1,5 @@
 import { assert } from '@japa/assert'
+import { expectTypeOf } from '@japa/expect-type'
 import { specReporter } from '@japa/spec-reporter'
 import { runFailedTests } from '@japa/run-failed-tests'
 import { processCliArgs, configure, run } from '@japa/runner'
@@ -20,7 +21,7 @@ configure({
   ...processCliArgs(process.argv.slice(2)),
   ...{
     files: ['tests/**/*.spec.ts'],
-    plugins: [assert(), runFailedTests()],
+    plugins: [assert(), runFailedTests(), expectTypeOf()],
     reporters: [specReporter()],
     importer: (filePath) => import(filePath),
   },

index.ts

@@ -1,2 +1,11 @@
+/*
+ * @poppinss/validator-lite
+ *
+ * (c) Poppinss
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
 export * from './src/contracts'
 export { schema } from './src/schema/index'