feat: contain DTO mapping at the HTTP boundary

src/domain/models/resource.js

@@ -0,0 +1,19 @@
+/**
+ * @typedef {{
+ *   id: string,
+ *   displayName: string,
+ *   createdAt: string | null
+ * }} Resource
+ */
+
+/** @param {Resource} values @returns {Readonly<Resource>} */
+export function createResource(values) {
+  if (!values.id || !values.displayName) {
+    throw new TypeError("Resource invariants require id and displayName");
+  }
+  return Object.freeze({
+    id: values.id,
+    displayName: values.displayName,
+    createdAt: values.createdAt,
+  });
+}