packages/react-reconciler/src/ReactFiberThenable.js

@@ -214,7 +214,7 @@ export function trackUsedThenable<T>(
       }
 
       // Check one more time in case the thenable resolved synchronously.
-      switch ((thenable as Thenable<T>).status) {
+      switch ((thenable: Thenable<T>).status) {
         case 'fulfilled': {
           const fulfilledThenable: FulfilledThenable<T> = (thenable: any);
           return fulfilledThenable.value;

packages/react-server/src/ReactFizzThenable.js

@@ -107,7 +107,7 @@ export function trackUsedThenable<T>(
       }
 
       // Check one more time in case the thenable resolved synchronously
-      switch ((thenable as Thenable<T>).status) {
+      switch ((thenable: Thenable<T>).status) {
         case 'fulfilled': {
           const fulfilledThenable: FulfilledThenable<T> = (thenable: any);
           return fulfilledThenable.value;

packages/react-server/src/ReactFlightThenable.js

@@ -107,7 +107,7 @@ export function trackUsedThenable<T>(
       }
 
       // Check one more time in case the thenable resolved synchronously
-      switch ((thenable as Thenable<T>).status) {
+      switch ((thenable: Thenable<T>).status) {
         case 'fulfilled': {
           const fulfilledThenable: FulfilledThenable<T> = (thenable: any);
           return fulfilledThenable.value;

packages/react/src/ReactChildren.js

@@ -42,7 +42,7 @@ function escape(key: string): string {
     ':': '=2',
   };
   const escapedString = key.replace(escapeRegex, function (match) {
-  // $FlowFixMe[invalid-computed-prop]
+    // $FlowFixMe[invalid-computed-prop]
     return escaperLookup[match];
   });
 
@@ -128,7 +128,7 @@ function resolveThenable<T>(thenable: Thenable<T>): T {
       }
 
       // Check one more time in case the thenable resolved synchronously.
-      switch ((thenable as Thenable<T>).status) {
+      switch ((thenable: Thenable<T>).status) {
         case 'fulfilled': {
           const fulfilledThenable: FulfilledThenable<T> = (thenable: any);
           return fulfilledThenable.value;

packages/react/src/ReactLazy.js

@@ -61,15 +61,21 @@ function lazyInitializer<T>(payload: Payload<T>): T {
     // end up fixing it if the resolution was a concurrency bug.
     thenable.then(
       moduleObject => {
-        if ((payload as Payload<T>)._status === Pending || payload._status === Uninitialized) {
+        if (
+          (payload: Payload<T>)._status === Pending ||
+          payload._status === Uninitialized
+        ) {
           // Transition to the next state.
           const resolved: ResolvedPayload<T> = (payload: any);
           resolved._status = Resolved;
           resolved._result = moduleObject;
         }
       },
       error => {
-        if ((payload as Payload<T>)._status === Pending || payload._status === Uninitialized) {
+        if (
+          (payload: Payload<T>)._status === Pending ||
+          payload._status === Uninitialized
+        ) {
           // Transition to the next state.
           const rejected: RejectedPayload = (payload: any);
           rejected._status = Rejected;