changeset

.changeset/curvy-months-invite.md

@@ -0,0 +1,21 @@
+---
+'graphql-yoga': minor
+---
+
+## New hook `onOperation`
+
+This new hook is called for each GraphQL operaiton to handle. It allows to replace the
+default Yoga operation handler.
+
+Example: Wrap the GraphQL handling pipeline in an `AsyncLocalStorage`
+
+```ts
+function myPlugin(): Plugin {
+  const context = new AsyncLocalStorage();
+  return {
+    onOperation({ operationHandler, setOperationHandler }) {
+      const store = { foo: 'bar' }
+      setOperationHandler((payload) => context.run(store, operationHandler, payload))
+   }
+}
+```