Add test

test/fixtures/json-attributes.mjs

@@ -0,0 +1,5 @@
+import coolFile from './something.json' with { type: 'json' }
+
+export default {
+  data: coolFile.data
+}

test/hook/v18.19-static-import-attributes.mjs

@@ -0,0 +1,17 @@
+// Unless explicitly stated otherwise all files in this repository are licensed under the Apache 2.0 License.
+//
+// This product includes software developed at Datadog (https://www.datadoghq.com/). Copyright 2021 Datadog, Inc.
+
+import jsonMjs from '../fixtures/json-attributes.mjs'
+import { strictEqual } from 'assert'
+
+// Acorn does not support import attributes so an error is logged but the import
+// still works!
+//
+// Hook((exports, name) => {
+//   if (name.match(/json\.mjs/)) {
+//     exports.default.data += '-dawg'
+//   }
+// })
+
+strictEqual(jsonMjs.data, 'dog')