From 8dea154f14550a8c8475caa4452cf6448947a4da Mon Sep 17 00:00:00 2001
From: Andrew Clark <git@andrewclark.io>
Date: Fri, 6 Mar 2020 10:37:54 -0800
Subject: [PATCH] Failing: Dropped effects in Legacy Mode Suspense

---
 packages/react-noop-renderer/src/ReactNoop.js |  1 +
 .../src/createReactNoop.js                    | 26 +++++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/packages/react-noop-renderer/src/ReactNoop.js b/packages/react-noop-renderer/src/ReactNoop.js
index eb9c8468bcb34..e463b77aa9b1a 100644
--- a/packages/react-noop-renderer/src/ReactNoop.js
+++ b/packages/react-noop-renderer/src/ReactNoop.js
@@ -24,6 +24,7 @@ export const {
   getOrCreateRootContainer,
   createRoot,
   createBlockingRoot,
+  createLegacyRoot,
   getChildrenAsJSX,
   getPendingChildrenAsJSX,
   createPortal,
diff --git a/packages/react-noop-renderer/src/createReactNoop.js b/packages/react-noop-renderer/src/createReactNoop.js
index 9987343b90f3b..7233f7976409a 100644
--- a/packages/react-noop-renderer/src/createReactNoop.js
+++ b/packages/react-noop-renderer/src/createReactNoop.js
@@ -785,6 +785,32 @@ function createReactNoop(reconciler: Function, useMutation: boolean) {
       };
     },
 
+    createLegacyRoot() {
+      const container = {
+        rootID: '' + idCounter++,
+        pendingChildren: [],
+        children: [],
+      };
+      const fiberRoot = NoopRenderer.createContainer(
+        container,
+        LegacyRoot,
+        false,
+        null,
+      );
+      return {
+        _Scheduler: Scheduler,
+        render(children: ReactNodeList) {
+          NoopRenderer.updateContainer(children, fiberRoot, null, null);
+        },
+        getChildren() {
+          return getChildren(container);
+        },
+        getChildrenAsJSX() {
+          return getChildrenAsJSX(container);
+        },
+      };
+    },
+
     getChildrenAsJSX(rootID: string = DEFAULT_ROOT_ID) {
       const container = rootContainers.get(rootID);
       return getChildrenAsJSX(container);