feat: Add execution serializer

packages/backend/src/serializers/execution.js

@@ -0,0 +1,18 @@
+import flowSerializer from './flow.js';
+
+const executionSerializer = (execution) => {
+  let executionData = {
+    id: execution.id,
+    testRun: execution.testRun,
+    createdAt: execution.createdAt.getTime(),
+    updatedAt: execution.updatedAt.getTime(),
+  };
+
+  if (execution.flow) {
+    executionData.flow = flowSerializer(execution.flow);
+  }
+
+  return executionData;
+};
+
+export default executionSerializer;