Restore currentRenderN instead of resetting it

Author: eps1lon

packages/react-reconciler/src/ReactFiberNewContext.new.js

@@ -48,6 +48,15 @@ import {
 
 const valueCursor: StackCursor<mixed> = createCursor(null);
 
+let rendererCursorDEV: StackCursor<Object | null>;
+if (__DEV__) {
+  rendererCursorDEV = createCursor(null);
+}
+let renderer2CursorDEV: StackCursor<Object | null>;
+if (__DEV__) {
+  renderer2CursorDEV = createCursor(null);
+}
+
 let rendererSigil;
 if (__DEV__) {
   // Use this to detect multiple renderers using the same context
@@ -93,6 +102,8 @@ export function pushProvider<T>(
 
     context._currentValue = nextValue;
     if (__DEV__) {
+      push(rendererCursorDEV, context._currentRenderer, providerFiber);
+
       if (
         context._currentRenderer !== undefined &&
         context._currentRenderer !== null &&
@@ -110,6 +121,8 @@ export function pushProvider<T>(
 
     context._currentValue2 = nextValue;
     if (__DEV__) {
+      push(renderer2CursorDEV, context._currentRenderer2, providerFiber);
+
       if (
         context._currentRenderer2 !== undefined &&
         context._currentRenderer2 !== null &&
@@ -130,18 +143,24 @@ export function popProvider(
   providerFiber: Fiber,
 ): void {
   const currentValue = valueCursor.current;
-  pop(valueCursor, providerFiber);
+
   if (isPrimaryRenderer) {
     context._currentValue = currentValue;
     if (__DEV__) {
-      context._currentRenderer = null;
+      const currentRenderer = rendererCursorDEV.current;
+      pop(rendererCursorDEV, providerFiber);
+      context._currentRenderer = currentRenderer;
     }
   } else {
     context._currentValue2 = currentValue;
     if (__DEV__) {
-      context._currentRenderer2 = null;
+      const currentRenderer2 = renderer2CursorDEV.current;
+      pop(renderer2CursorDEV, providerFiber);
+      context._currentRenderer2 = currentRenderer2;
     }
   }
+
+  pop(valueCursor, providerFiber);
 }
 
 export function scheduleContextWorkOnParentPath(

packages/react-reconciler/src/ReactFiberNewContext.old.js

@@ -48,6 +48,11 @@ import {
 
 const valueCursor: StackCursor<mixed> = createCursor(null);
 
+let rendererCursorDEV: StackCursor<mixed>;
+if (__DEV__) {
+  rendererCursorDEV = createCursor(null);
+}
+
 let rendererSigil;
 if (__DEV__) {
   // Use this to detect multiple renderers using the same context
@@ -93,6 +98,8 @@ export function pushProvider<T>(
 
     context._currentValue = nextValue;
     if (__DEV__) {
+      push(rendererCursorDEV, context._currentRenderer, providerFiber)
+
       if (
         context._currentRenderer !== undefined &&
         context._currentRenderer !== null &&
@@ -110,6 +117,8 @@ export function pushProvider<T>(
 
     context._currentValue2 = nextValue;
     if (__DEV__) {
+      push(rendererCursorDEV, context._currentRenderer2, providerFiber)
+
       if (
         context._currentRenderer2 !== undefined &&
         context._currentRenderer2 !== null &&
@@ -134,12 +143,16 @@ export function popProvider(
   if (isPrimaryRenderer) {
     context._currentValue = currentValue;
     if (__DEV__) {
-      context._currentRenderer = null;
+      const currentRenderer = rendererCursorDEV.current
+      pop(rendererCursorDEV, providerFiber);
+      context._currentRenderer = currentRenderer;
     }
   } else {
     context._currentValue2 = currentValue;
     if (__DEV__) {
-      context._currentRenderer2 = null;
+      const currentRenderer2 = rendererCursorDEV.current
+      pop(rendererCursorDEV, providerFiber);
+      context._currentRenderer2 = currentRenderer2;
     }
   }
 }