From abc157f14cb8056c1f1dd765ba3fa2dc56d86526 Mon Sep 17 00:00:00 2001
From: Jack Pope <jackpope@meta.com>
Date: Wed, 6 Dec 2023 12:52:13 -0500
Subject: [PATCH] Add stable concurrent option to RTR

---
 .../__tests__/ReactCacheOld-test.internal.js  | 14 +++---
 .../ReactDevToolsHooksIntegration-test.js     |  2 +-
 .../src/__tests__/inspectedElement-test.js    | 12 ++---
 .../__tests__/DebugTracing-test.internal.js   | 18 +++----
 ...rorBoundaryReconciliation-test.internal.js |  2 +-
 .../src/__tests__/ReactHooks-test.internal.js | 16 +++---
 .../src/__tests__/ReactLazy-test.internal.js  | 50 +++++++++----------
 .../__tests__/ReactSuspense-test.internal.js  | 26 +++++-----
 .../src/__tests__/StrictEffectsMode-test.js   | 22 ++++----
 .../src/ReactTestRenderer.js                  |  3 +-
 .../__tests__/ReactTestRendererAsync-test.js  |  8 +--
 .../__tests__/ReactProfiler-test.internal.js  | 12 ++---
 ...ofilerDevToolsIntegration-test.internal.js |  2 +-
 .../__tests__/ReactStartTransition-test.js    |  2 +-
 .../src/__tests__/useSubscription-test.js     | 18 +++----
 15 files changed, 104 insertions(+), 103 deletions(-)

diff --git a/packages/react-cache/src/__tests__/ReactCacheOld-test.internal.js b/packages/react-cache/src/__tests__/ReactCacheOld-test.internal.js
index 9463b72e14a69..2403d2de286b1 100644
--- a/packages/react-cache/src/__tests__/ReactCacheOld-test.internal.js
+++ b/packages/react-cache/src/__tests__/ReactCacheOld-test.internal.js
@@ -121,7 +121,7 @@ describe('ReactCache', () => {
     }
 
     ReactTestRenderer.create(<App />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Suspend! [Hi]', 'Loading...']);
@@ -141,7 +141,7 @@ describe('ReactCache', () => {
     }
 
     const root = ReactTestRenderer.create(<App />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Suspend! [Hi]', 'Loading...']);
@@ -181,7 +181,7 @@ describe('ReactCache', () => {
         <App />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -210,7 +210,7 @@ describe('ReactCache', () => {
         <AsyncText ms={100} text={3} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Suspend! [1]', 'Loading...']);
@@ -298,7 +298,7 @@ describe('ReactCache', () => {
         <App />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -356,7 +356,7 @@ describe('ReactCache', () => {
         <BadAsyncText text="Hi" />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -372,7 +372,7 @@ describe('ReactCache', () => {
         <BadAsyncText text="Hi" />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
diff --git a/packages/react-debug-tools/src/__tests__/ReactDevToolsHooksIntegration-test.js b/packages/react-debug-tools/src/__tests__/ReactDevToolsHooksIntegration-test.js
index 5da6b8de2a42e..eabcbd215bfb2 100644
--- a/packages/react-debug-tools/src/__tests__/ReactDevToolsHooksIntegration-test.js
+++ b/packages/react-debug-tools/src/__tests__/ReactDevToolsHooksIntegration-test.js
@@ -254,7 +254,7 @@ describe('React hooks DevTools integration', () => {
             <MyComponent />
           </React.Suspense>
         </div>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
diff --git a/packages/react-devtools-shared/src/__tests__/inspectedElement-test.js b/packages/react-devtools-shared/src/__tests__/inspectedElement-test.js
index 891e4f3e73834..cba7b3b2e7b61 100644
--- a/packages/react-devtools-shared/src/__tests__/inspectedElement-test.js
+++ b/packages/react-devtools-shared/src/__tests__/inspectedElement-test.js
@@ -75,7 +75,7 @@ describe('InspectedElement', () => {
     // Used by inspectElementAtIndex() helper function
     utils.act(() => {
       testRendererInstance = TestRenderer.create(null, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -307,7 +307,7 @@ describe('InspectedElement', () => {
         ['An update to %s inside a test was not wrapped in act'],
         () => {
           testRendererInstance = TestRenderer.create(null, {
-            unstable_isConcurrent: true,
+            isConcurrent: true,
           });
         },
       );
@@ -469,7 +469,7 @@ describe('InspectedElement', () => {
       ['An update to %s inside a test was not wrapped in act'],
       () => {
         testRendererInstance = TestRenderer.create(null, {
-          unstable_isConcurrent: true,
+          isConcurrent: true,
         });
       },
     );
@@ -2034,7 +2034,7 @@ describe('InspectedElement', () => {
       ['An update to %s inside a test was not wrapped in act'],
       () => {
         testRendererInstance = TestRenderer.create(null, {
-          unstable_isConcurrent: true,
+          isConcurrent: true,
         });
       },
     );
@@ -2317,7 +2317,7 @@ describe('InspectedElement', () => {
               <Suspender target={id} />
             </React.Suspense>
           </Contexts>,
-          {unstable_isConcurrent: true},
+          {isConcurrent: true},
         );
       }, false);
       await utils.actAsync(() => {
@@ -2817,7 +2817,7 @@ describe('InspectedElement', () => {
           ['An update to %s inside a test was not wrapped in act'],
           () => {
             testRendererInstance = TestRenderer.create(null, {
-              unstable_isConcurrent: true,
+              isConcurrent: true,
             });
           },
         );
diff --git a/packages/react-reconciler/src/__tests__/DebugTracing-test.internal.js b/packages/react-reconciler/src/__tests__/DebugTracing-test.internal.js
index f8026d6ea9fab..041086690e7fe 100644
--- a/packages/react-reconciler/src/__tests__/DebugTracing-test.internal.js
+++ b/packages/react-reconciler/src/__tests__/DebugTracing-test.internal.js
@@ -67,7 +67,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <div />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
     expect(logs).toEqual([]);
@@ -179,7 +179,7 @@ describe('DebugTracing', () => {
             <Example />
           </React.Suspense>
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
@@ -216,7 +216,7 @@ describe('DebugTracing', () => {
             </React.Suspense>
           </Wrapper>
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
@@ -247,7 +247,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <Example />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
@@ -278,7 +278,7 @@ describe('DebugTracing', () => {
           <React.unstable_DebugTracingMode>
             <Example />
           </React.unstable_DebugTracingMode>,
-          {unstable_isConcurrent: true},
+          {isConcurrent: true},
         ),
       );
     }).toErrorDev('Cannot update during an existing state transition');
@@ -305,7 +305,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <Example />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
@@ -333,7 +333,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <Example />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
     expect(logs).toEqual([
@@ -358,7 +358,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <Example />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
 
@@ -381,7 +381,7 @@ describe('DebugTracing', () => {
         <React.unstable_DebugTracingMode>
           <Example />
         </React.unstable_DebugTracingMode>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       ),
     );
 
diff --git a/packages/react-reconciler/src/__tests__/ErrorBoundaryReconciliation-test.internal.js b/packages/react-reconciler/src/__tests__/ErrorBoundaryReconciliation-test.internal.js
index 71e047afc5ff6..0ce51699849b7 100644
--- a/packages/react-reconciler/src/__tests__/ErrorBoundaryReconciliation-test.internal.js
+++ b/packages/react-reconciler/src/__tests__/ErrorBoundaryReconciliation-test.internal.js
@@ -59,7 +59,7 @@ describe('ErrorBoundaryReconciliation', () => {
           <ErrorBoundary fallbackTagName={fallbackTagName}>
             <BrokenRender fail={false} />
           </ErrorBoundary>,
-          {unstable_isConcurrent: isConcurrent},
+          {isConcurrent: isConcurrent},
         );
       });
       expect(renderer).toMatchRenderedOutput(<span prop="BrokenRender" />);
diff --git a/packages/react-reconciler/src/__tests__/ReactHooks-test.internal.js b/packages/react-reconciler/src/__tests__/ReactHooks-test.internal.js
index 5f09cf997907c..5da503c8ca34d 100644
--- a/packages/react-reconciler/src/__tests__/ReactHooks-test.internal.js
+++ b/packages/react-reconciler/src/__tests__/ReactHooks-test.internal.js
@@ -86,7 +86,7 @@ describe('ReactHooks', () => {
       return <Child text={text} />;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Parent />);
     await waitForAll(['Parent: 0, 0', 'Child: 0, 0', 'Effect: 0, 0']);
     expect(root).toMatchRenderedOutput('0, 0');
@@ -174,7 +174,7 @@ describe('ReactHooks', () => {
 
     Parent = memo(Parent);
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Parent theme="light" />);
     await waitForAll(['Parent: 0, 0 (light)', 'Child: 0, 0 (light)']);
     expect(root).toMatchRenderedOutput('0, 0 (light)');
@@ -232,7 +232,7 @@ describe('ReactHooks', () => {
       return counter;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Counter />);
     await waitForAll(['Count: 0']);
     expect(root).toMatchRenderedOutput('0');
@@ -266,7 +266,7 @@ describe('ReactHooks', () => {
       return counter;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Counter />);
     await waitForAll(['Count: 0']);
     expect(root).toMatchRenderedOutput('0');
@@ -322,7 +322,7 @@ describe('ReactHooks', () => {
       });
       return <Child text={text} />;
     }
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     await act(() => {
       root.update(
         <ThemeProvider>
@@ -390,7 +390,7 @@ describe('ReactHooks', () => {
       return <Child text={counter} />;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Parent />);
     await waitForAll(['Parent: 0', 'Child: 0', 'Effect: 0']);
     expect(root).toMatchRenderedOutput('0');
@@ -465,7 +465,7 @@ describe('ReactHooks', () => {
       return <Child text={counter} />;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Parent />);
     await waitForAll(['Parent: 0', 'Child: 0']);
     expect(root).toMatchRenderedOutput('0');
@@ -523,7 +523,7 @@ describe('ReactHooks', () => {
       return <Child text={counter} />;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
     root.update(<Parent />);
     await waitForAll(['Parent: 1', 'Child: 1']);
     expect(root).toMatchRenderedOutput('1');
diff --git a/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js b/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js
index a96c60bc26e88..36e956256dc60 100644
--- a/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js
+++ b/packages/react-reconciler/src/__tests__/ReactLazy-test.internal.js
@@ -99,7 +99,7 @@ describe('ReactLazy', () => {
         <LazyText text="Hi" />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -185,7 +185,7 @@ describe('ReactLazy', () => {
         <LazyBar />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -208,7 +208,7 @@ describe('ReactLazy', () => {
     const LazyText = lazy(async () => Text);
 
     const root = ReactTestRenderer.create(null, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     let error;
@@ -242,7 +242,7 @@ describe('ReactLazy', () => {
     });
 
     const root = ReactTestRenderer.create(null, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     let error;
@@ -302,7 +302,7 @@ describe('ReactLazy', () => {
     }
 
     const root = ReactTestRenderer.create(<Parent swap={false} />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Suspend! [LazyChildA]', 'Loading...']);
@@ -337,7 +337,7 @@ describe('ReactLazy', () => {
         <LazyText />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -394,7 +394,7 @@ describe('ReactLazy', () => {
         </Lazy>
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Loading...']);
@@ -440,7 +440,7 @@ describe('ReactLazy', () => {
         </Suspense>
       </>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Not lazy: 0', 'Loading...']);
@@ -485,7 +485,7 @@ describe('ReactLazy', () => {
         </Suspense>
       </>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Not lazy: 0', 'Loading...']);
@@ -561,7 +561,7 @@ describe('ReactLazy', () => {
         <LazyClass num={1} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -691,7 +691,7 @@ describe('ReactLazy', () => {
         <LazyText />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -734,7 +734,7 @@ describe('ReactLazy', () => {
         <BadLazy />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -761,7 +761,7 @@ describe('ReactLazy', () => {
         <Lazy2 text="Hello" />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -815,7 +815,7 @@ describe('ReactLazy', () => {
         <LazyAdd inner="2" outer="2" />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -1012,7 +1012,7 @@ describe('ReactLazy', () => {
         <LazyText />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -1055,7 +1055,7 @@ describe('ReactLazy', () => {
         <LazyFoo />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -1100,7 +1100,7 @@ describe('ReactLazy', () => {
         <LazyForwardRef ref={ref} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -1131,7 +1131,7 @@ describe('ReactLazy', () => {
         <LazyAdd outer={2} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Loading...']);
@@ -1218,7 +1218,7 @@ describe('ReactLazy', () => {
         <LazyAdd outer={2} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Loading...']);
@@ -1264,7 +1264,7 @@ describe('ReactLazy', () => {
         <LazyFoo ref={ref} />
       </Suspense>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -1304,7 +1304,7 @@ describe('ReactLazy', () => {
           <LazyText text="Hi" />
         </Suspense>
       </ErrorBoundary>,
-      {unstable_isConcurrent: true},
+      {isConcurrent: true},
     );
 
     await waitForAll(['Loading...']);
@@ -1412,7 +1412,7 @@ describe('ReactLazy', () => {
     }
 
     const root = ReactTestRenderer.create(<Parent swap={false} />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Init A', 'Loading...']);
@@ -1497,7 +1497,7 @@ describe('ReactLazy', () => {
     }
 
     const root = ReactTestRenderer.create(<Parent swap={false} />, {
-      unstable_isConcurrent: false,
+      isConcurrent: false,
     });
 
     assertLog(['Init A', 'Init B', 'Loading...']);
@@ -1559,7 +1559,7 @@ describe('ReactLazy', () => {
     }
 
     const root = ReactTestRenderer.create(<Parent swap={false} />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Init A', 'Loading...']);
@@ -1628,7 +1628,7 @@ describe('ReactLazy', () => {
     }
 
     const root = ReactTestRenderer.create(<Parent swap={false} />, {
-      unstable_isConcurrent: false,
+      isConcurrent: false,
     });
 
     assertLog(['Init A', 'Loading...']);
diff --git a/packages/react-reconciler/src/__tests__/ReactSuspense-test.internal.js b/packages/react-reconciler/src/__tests__/ReactSuspense-test.internal.js
index 6e347b900f655..4440f900294a7 100644
--- a/packages/react-reconciler/src/__tests__/ReactSuspense-test.internal.js
+++ b/packages/react-reconciler/src/__tests__/ReactSuspense-test.internal.js
@@ -117,7 +117,7 @@ describe('ReactSuspense', () => {
 
     // Render an empty shell
     const root = ReactTestRenderer.create(<Foo />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Foo']);
@@ -158,7 +158,7 @@ describe('ReactSuspense', () => {
         </Suspense>
       </>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
 
@@ -217,7 +217,7 @@ describe('ReactSuspense', () => {
         <Text text="Initial" />
       </>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Initial']);
@@ -268,7 +268,7 @@ describe('ReactSuspense', () => {
     }
 
     const root = ReactTestRenderer.create(<Foo />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Foo', 'Suspend! [A]', 'Loading...']);
@@ -303,7 +303,7 @@ describe('ReactSuspense', () => {
     }
 
     const root = ReactTestRenderer.create(<Foo />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Foo', 'Suspend! [A]', 'Loading...']);
@@ -353,7 +353,7 @@ describe('ReactSuspense', () => {
       }
 
       const root = ReactTestRenderer.create(null, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
 
       root.update(<App shouldSuspend={false} step={0} />);
@@ -456,7 +456,7 @@ describe('ReactSuspense', () => {
     }
 
     const root = ReactTestRenderer.create(<App />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
     await waitForAll(['Suspend! [default]', 'Loading...']);
 
@@ -502,7 +502,7 @@ describe('ReactSuspense', () => {
     }
 
     const root = ReactTestRenderer.create(<App />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
     await waitForAll(['Suspend! [default]', 'Loading...']);
 
@@ -545,7 +545,7 @@ describe('ReactSuspense', () => {
         </Suspense>
       </App>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Suspend! [default]', 'Loading...']);
@@ -589,7 +589,7 @@ describe('ReactSuspense', () => {
         </Suspense>
       </App>,
       {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       },
     );
     await waitForAll(['Suspend! [default]', 'Loading...']);
@@ -631,7 +631,7 @@ describe('ReactSuspense', () => {
     }
 
     const root = ReactTestRenderer.create(<App />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['Child 1', 'create layout']);
@@ -899,7 +899,7 @@ describe('ReactSuspense', () => {
       }
 
       const root = ReactTestRenderer.create(<App />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
 
       // Initial render
@@ -990,7 +990,7 @@ describe('ReactSuspense', () => {
       }
 
       const root = ReactTestRenderer.create(<App />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
 
       await waitForAll(['Suspend! [Child 1]', 'Loading...']);
diff --git a/packages/react-reconciler/src/__tests__/StrictEffectsMode-test.js b/packages/react-reconciler/src/__tests__/StrictEffectsMode-test.js
index f7c30616c98c1..af35defe2325c 100644
--- a/packages/react-reconciler/src/__tests__/StrictEffectsMode-test.js
+++ b/packages/react-reconciler/src/__tests__/StrictEffectsMode-test.js
@@ -76,7 +76,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -129,7 +129,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -182,7 +182,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -233,7 +233,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -286,7 +286,7 @@ describe('StrictEffectsMode', () => {
     }
 
     await act(() => {
-      ReactTestRenderer.create(<App />, {unstable_isConcurrent: true});
+      ReactTestRenderer.create(<App />, {isConcurrent: true});
     });
 
     if (supportsDoubleInvokeEffects()) {
@@ -322,7 +322,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -367,7 +367,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -438,7 +438,7 @@ describe('StrictEffectsMode', () => {
 
     await act(() => {
       ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -502,7 +502,7 @@ describe('StrictEffectsMode', () => {
     }
 
     await act(() => {
-      ReactTestRenderer.create(<App />, {unstable_isConcurrent: true});
+      ReactTestRenderer.create(<App />, {isConcurrent: true});
     });
 
     if (supportsDoubleInvokeEffects()) {
@@ -586,7 +586,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -667,7 +667,7 @@ describe('StrictEffectsMode', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<App text={'mount'} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
diff --git a/packages/react-test-renderer/src/ReactTestRenderer.js b/packages/react-test-renderer/src/ReactTestRenderer.js
index 273bcd128f47c..17933d891f674 100644
--- a/packages/react-test-renderer/src/ReactTestRenderer.js
+++ b/packages/react-test-renderer/src/ReactTestRenderer.js
@@ -60,6 +60,7 @@ const act = React.unstable_act;
 
 type TestRendererOptions = {
   createNodeMock: (element: React$Element<any>) => any,
+  isConcurrent: boolean,
   unstable_isConcurrent: boolean,
   unstable_strictMode: boolean,
   unstable_concurrentUpdatesByDefault: boolean,
@@ -479,7 +480,7 @@ function create(
       // $FlowFixMe[incompatible-type] found when upgrading Flow
       createNodeMock = options.createNodeMock;
     }
-    if (options.unstable_isConcurrent === true) {
+    if (options.unstable_isConcurrent === true || options.isConcurrent === true) {
       isConcurrent = true;
     }
     if (options.unstable_strictMode === true) {
diff --git a/packages/react-test-renderer/src/__tests__/ReactTestRendererAsync-test.js b/packages/react-test-renderer/src/__tests__/ReactTestRendererAsync-test.js
index 468f62d39a722..51c7e0a950ddc 100644
--- a/packages/react-test-renderer/src/__tests__/ReactTestRendererAsync-test.js
+++ b/packages/react-test-renderer/src/__tests__/ReactTestRendererAsync-test.js
@@ -34,7 +34,7 @@ describe('ReactTestRendererAsync', () => {
       return props.children;
     }
     const renderer = ReactTestRenderer.create(<Foo>Hi</Foo>, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     // Before flushing, nothing has mounted.
@@ -68,7 +68,7 @@ describe('ReactTestRendererAsync', () => {
       );
     }
     const renderer = ReactTestRenderer.create(<Parent step={1} />, {
-      unstable_isConcurrent: true,
+      isConcurrent: true,
     });
 
     await waitForAll(['A:1', 'B:1', 'C:1']);
@@ -97,7 +97,7 @@ describe('ReactTestRendererAsync', () => {
     let renderer;
     React.startTransition(() => {
       renderer = ReactTestRenderer.create(<Parent step={1} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
@@ -137,7 +137,7 @@ describe('ReactTestRendererAsync', () => {
     let renderer;
     React.startTransition(() => {
       renderer = ReactTestRenderer.create(<Example step={1} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
diff --git a/packages/react/src/__tests__/ReactProfiler-test.internal.js b/packages/react/src/__tests__/ReactProfiler-test.internal.js
index 25386df33abcf..fd42561393101 100644
--- a/packages/react/src/__tests__/ReactProfiler-test.internal.js
+++ b/packages/react/src/__tests__/ReactProfiler-test.internal.js
@@ -213,7 +213,7 @@ describe(`onRender`, () => {
           <Yield value="last" />
         </React.Profiler>,
         {
-          unstable_isConcurrent: true,
+          isConcurrent: true,
         },
       );
     });
@@ -752,7 +752,7 @@ describe(`onRender`, () => {
             <Yield renderTime={2} />
             <Yield renderTime={3} />
           </React.Profiler>,
-          {unstable_isConcurrent: true},
+          {isConcurrent: true},
         );
       });
 
@@ -793,7 +793,7 @@ describe(`onRender`, () => {
               <Yield renderTime={17} />
             </React.Profiler>
           </React.Profiler>,
-          {unstable_isConcurrent: true},
+          {isConcurrent: true},
         );
       });
 
@@ -844,7 +844,7 @@ describe(`onRender`, () => {
             <Yield renderTime={10} />
             <Yield renderTime={20} />
           </React.Profiler>,
-          {unstable_isConcurrent: true},
+          {isConcurrent: true},
         );
       });
 
@@ -897,7 +897,7 @@ describe(`onRender`, () => {
           <Yield renderTime={6} />
           <Yield renderTime={15} />
         </React.Profiler>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
 
       // Render everything initially.
@@ -1002,7 +1002,7 @@ describe(`onRender`, () => {
           <FirstComponent />
           <SecondComponent />
         </React.Profiler>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
 
       // Render everything initially.
diff --git a/packages/react/src/__tests__/ReactProfilerDevToolsIntegration-test.internal.js b/packages/react/src/__tests__/ReactProfilerDevToolsIntegration-test.internal.js
index d28e2ad8de64a..572abd354da63 100644
--- a/packages/react/src/__tests__/ReactProfilerDevToolsIntegration-test.internal.js
+++ b/packages/react/src/__tests__/ReactProfilerDevToolsIntegration-test.internal.js
@@ -150,7 +150,7 @@ describe('ReactProfiler DevTools integration', () => {
       return text;
     }
 
-    const root = ReactTestRenderer.create(null, {unstable_isConcurrent: true});
+    const root = ReactTestRenderer.create(null, {isConcurrent: true});
 
     // Commit something
     root.update(<Text text="A" />);
diff --git a/packages/react/src/__tests__/ReactStartTransition-test.js b/packages/react/src/__tests__/ReactStartTransition-test.js
index 9e689ac6e7105..c98372a7c74b7 100644
--- a/packages/react/src/__tests__/ReactStartTransition-test.js
+++ b/packages/react/src/__tests__/ReactStartTransition-test.js
@@ -49,7 +49,7 @@ describe('ReactStartTransition', () => {
 
     await act(() => {
       ReactTestRenderer.create(<Component level={0} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
 
diff --git a/packages/use-subscription/src/__tests__/useSubscription-test.js b/packages/use-subscription/src/__tests__/useSubscription-test.js
index 19eba0a15be8e..9c971bd14bbb3 100644
--- a/packages/use-subscription/src/__tests__/useSubscription-test.js
+++ b/packages/use-subscription/src/__tests__/useSubscription-test.js
@@ -84,7 +84,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription source={observable} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
     assertLog(['default']);
@@ -136,7 +136,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription source={observable} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
     assertLog(['initial']);
@@ -185,7 +185,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription source={observableA} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
 
@@ -244,7 +244,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription source={observableA} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
 
@@ -331,7 +331,7 @@ describe('useSubscription', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<Parent observed={observableA} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
     assertLog(['Child: a-0', 'Grandchild: a-0']);
@@ -434,7 +434,7 @@ describe('useSubscription', () => {
     let renderer;
     await act(() => {
       renderer = ReactTestRenderer.create(<Parent observed={observableA} />, {
-        unstable_isConcurrent: true,
+        isConcurrent: true,
       });
     });
     assertLog(['Child: a-0', 'Grandchild: a-0']);
@@ -532,7 +532,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription source={eventHandler} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
     assertLog([true]);
@@ -566,7 +566,7 @@ describe('useSubscription', () => {
     await act(() => {
       renderer = ReactTestRenderer.create(
         <Subscription subscription={subscription1} />,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
     });
     await waitForAll([]);
@@ -607,7 +607,7 @@ describe('useSubscription', () => {
           <Subscriber id="first" />
           <Subscriber id="second" />
         </React.Fragment>,
-        {unstable_isConcurrent: true},
+        {isConcurrent: true},
       );
       await waitForAll(['render:first:A', 'render:second:A']);