Make the suspended commit reason string configurable by the host

Author: sebmarkbage

packages/react-art/src/ReactFiberConfigART.js

@@ -621,6 +621,10 @@ export function waitForCommitToBeReady(timeoutOffset) {
   return null;
 }
 
+export function getSuspendedCommitReason(state, rootContainer) {
+  return '';
+}
+
 export const NotPendingTransition = null;
 export const HostTransitionContext: ReactContext<TransitionStatus> = {
   $$typeof: REACT_CONTEXT_TYPE,

packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js

@@ -6206,6 +6206,13 @@ export function waitForCommitToBeReady(
   return null;
 }
 
+export function getSuspendedCommitReason(
+  state: SuspendedState,
+  rootContainer: Container,
+): null | string {
+  return 'Suspended on CSS or Images';
+}
+
 function checkIfFullyUnsuspended(state: SuspendedState) {
   if (state.count === 0 && (state.imgCount === 0 || !state.waitingForImages)) {
     if (state.stylesheets) {

packages/react-native-renderer/src/ReactFiberConfigFabric.js

@@ -627,6 +627,13 @@ export function waitForCommitToBeReady(
   return null;
 }
 
+export function getSuspendedCommitReason(
+  state: SuspendedState,
+  rootContainer: Container,
+): null | string {
+  return null;
+}
+
 export type FragmentInstanceType = {
   _fragmentFiber: Fiber,
   _observers: null | Set<IntersectionObserver>,

packages/react-native-renderer/src/ReactFiberConfigNative.js

@@ -806,6 +806,13 @@ export function waitForCommitToBeReady(
   return null;
 }
 
+export function getSuspendedCommitReason(
+  state: SuspendedState,
+  rootContainer: Container,
+): null | string {
+  return null;
+}
+
 export const NotPendingTransition: TransitionStatus = null;
 export const HostTransitionContext: ReactContext<TransitionStatus> = {
   $$typeof: REACT_CONTEXT_TYPE,

packages/react-noop-renderer/src/createReactNoop.js

@@ -702,6 +702,13 @@ function createReactNoop(reconciler: Function, useMutation: boolean) {
 
     waitForCommitToBeReady,
 
+    getSuspendedCommitReason(
+      state: SuspendedState,
+      rootContainer: Container,
+    ): null | string {
+      return null;
+    },
+
     NotPendingTransition: (null: TransitionStatus),
 
     resetFormInstance(form: Instance) {},

packages/react-reconciler/src/ReactFiberWorkLoop.js

@@ -102,6 +102,7 @@ import {
   startSuspendingCommit,
   suspendOnActiveViewTransition,
   waitForCommitToBeReady,
+  getSuspendedCommitReason,
   preloadInstance,
   preloadResource,
   supportsHydration,
@@ -1552,7 +1553,9 @@ function commitRootWhenReady(
           suspendedRetryLanes,
           exitStatus,
           suspendedState,
-          'Suspended on CSS or Images',
+          enableProfilerTimer
+            ? getSuspendedCommitReason(suspendedState, root.containerInfo)
+            : null,
           completedRenderStartTime,
           completedRenderEndTime,
         ),

packages/react-reconciler/src/__tests__/ReactFiberHostContext-test.internal.js

@@ -114,6 +114,9 @@ describe('ReactFiberHostContext', () => {
       waitForCommitToBeReady(state, timeoutOffset) {
         return null;
       },
+      getSuspendedCommitReason(state, rootContainer) {
+        return null;
+      },
       supportsMutation: true,
     });
 

packages/react-reconciler/src/forks/ReactFiberConfig.custom.js

@@ -99,6 +99,7 @@ export const suspendInstance = $$$config.suspendInstance;
 export const suspendOnActiveViewTransition =
   $$$config.suspendOnActiveViewTransition;
 export const waitForCommitToBeReady = $$$config.waitForCommitToBeReady;
+export const getSuspendedCommitReason = $$$config.getSuspendedCommitReason;
 export const NotPendingTransition = $$$config.NotPendingTransition;
 export const HostTransitionContext = $$$config.HostTransitionContext;
 export const resetFormInstance = $$$config.resetFormInstance;

packages/react-test-renderer/src/ReactFiberConfigTestHost.js

@@ -589,6 +589,13 @@ export function waitForCommitToBeReady(
   return null;
 }
 
+export function getSuspendedCommitReason(
+  state: SuspendedState,
+  rootContainer: Container,
+): null | string {
+  return null;
+}
+
 export const NotPendingTransition: TransitionStatus = null;
 export const HostTransitionContext: ReactContext<TransitionStatus> = {
   $$typeof: REACT_CONTEXT_TYPE,