Switch flag to boolean

Author: rickhanlonii

packages/react-dom/src/client/ReactDOMRoot.js

@@ -123,8 +123,7 @@ function createRootImpl(
       options.hydrationOptions != null &&
       options.hydrationOptions.mutableSources) ||
     null;
-  const strictModeLevelOverride =
-    options != null && options.unstable_strictMode === true ? 2 : null;
+  const isStrictMode = options != null && options.unstable_strictMode === true;
 
   let concurrentUpdatesByDefaultOverride = null;
   if (allowConcurrentByDefault) {
@@ -139,7 +138,7 @@ function createRootImpl(
     tag,
     hydrate,
     hydrationCallbacks,
-    strictModeLevelOverride,
+    isStrictMode,
     concurrentUpdatesByDefaultOverride,
   );
   markContainerAsRoot(root.current, container);

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

@@ -422,20 +422,17 @@ export function resetWorkInProgress(workInProgress: Fiber, renderLanes: Lanes) {
 
 export function createHostRootFiber(
   tag: RootTag,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): Fiber {
   let mode;
   if (tag === ConcurrentRoot) {
     mode = ConcurrentMode;
-    if (strictModeLevelOverride !== null) {
-      if (strictModeLevelOverride >= 1) {
-        mode |= StrictLegacyMode;
-      }
+    if (isStrictMode === true) {
+      mode |= StrictLegacyMode;
+
       if (enableStrictEffects) {
-        if (strictModeLevelOverride >= 2) {
-          mode |= StrictEffectsMode;
-        }
+        mode |= StrictEffectsMode;
       }
     } else if (enableStrictEffects && createRootStrictEffectsByDefault) {
       mode |= StrictLegacyMode | StrictEffectsMode;

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

@@ -422,20 +422,17 @@ export function resetWorkInProgress(workInProgress: Fiber, renderLanes: Lanes) {
 
 export function createHostRootFiber(
   tag: RootTag,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): Fiber {
   let mode;
   if (tag === ConcurrentRoot) {
     mode = ConcurrentMode;
-    if (strictModeLevelOverride !== null) {
-      if (strictModeLevelOverride >= 1) {
-        mode |= StrictLegacyMode;
-      }
+    if (isStrictMode === true) {
+      mode |= StrictLegacyMode;
+
       if (enableStrictEffects) {
-        if (strictModeLevelOverride >= 2) {
-          mode |= StrictEffectsMode;
-        }
+        mode |= StrictEffectsMode;
       }
     } else if (enableStrictEffects && createRootStrictEffectsByDefault) {
       mode |= StrictLegacyMode | StrictEffectsMode;

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

@@ -248,15 +248,15 @@ export function createContainer(
   tag: RootTag,
   hydrate: boolean,
   hydrationCallbacks: null | SuspenseHydrationCallbacks,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): OpaqueRoot {
   return createFiberRoot(
     containerInfo,
     tag,
     hydrate,
     hydrationCallbacks,
-    strictModeLevelOverride,
+    isStrictMode,
     concurrentUpdatesByDefaultOverride,
   );
 }

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

@@ -248,15 +248,15 @@ export function createContainer(
   tag: RootTag,
   hydrate: boolean,
   hydrationCallbacks: null | SuspenseHydrationCallbacks,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): OpaqueRoot {
   return createFiberRoot(
     containerInfo,
     tag,
     hydrate,
     hydrationCallbacks,
-    strictModeLevelOverride,
+    isStrictMode,
     concurrentUpdatesByDefaultOverride,
   );
 }

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

@@ -98,7 +98,7 @@ export function createFiberRoot(
   tag: RootTag,
   hydrate: boolean,
   hydrationCallbacks: null | SuspenseHydrationCallbacks,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): FiberRoot {
   const root: FiberRoot = (new FiberRootNode(containerInfo, tag, hydrate): any);
@@ -110,7 +110,7 @@ export function createFiberRoot(
   // stateNode is any.
   const uninitializedFiber = createHostRootFiber(
     tag,
-    strictModeLevelOverride,
+    isStrictMode,
     concurrentUpdatesByDefaultOverride,
   );
   root.current = uninitializedFiber;

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

@@ -98,7 +98,7 @@ export function createFiberRoot(
   tag: RootTag,
   hydrate: boolean,
   hydrationCallbacks: null | SuspenseHydrationCallbacks,
-  strictModeLevelOverride: null | number,
+  isStrictMode: boolean,
   concurrentUpdatesByDefaultOverride: null | boolean,
 ): FiberRoot {
   const root: FiberRoot = (new FiberRootNode(containerInfo, tag, hydrate): any);
@@ -110,7 +110,7 @@ export function createFiberRoot(
   // stateNode is any.
   const uninitializedFiber = createHostRootFiber(
     tag,
-    strictModeLevelOverride,
+    isStrictMode,
     concurrentUpdatesByDefaultOverride,
   );
   root.current = uninitializedFiber;

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

@@ -437,7 +437,7 @@ function propsMatch(props: Object, filter: Object): boolean {
 function create(element: React$Element<any>, options: TestRendererOptions) {
   let createNodeMock = defaultTestOptions.createNodeMock;
   let isConcurrent = false;
-  let strictModeLevel = null;
+  let isStrictMode = false;
   let concurrentUpdatesByDefault = null;
   if (typeof options === 'object' && options !== null) {
     if (typeof options.createNodeMock === 'function') {
@@ -447,7 +447,7 @@ function create(element: React$Element<any>, options: TestRendererOptions) {
       isConcurrent = true;
     }
     if (options.unstable_strictMode === true) {
-      strictModeLevel = 2;
+      isStrictMode = true;
     }
     if (allowConcurrentByDefault) {
       if (options.unstable_concurrentUpdatesByDefault !== undefined) {
@@ -466,7 +466,7 @@ function create(element: React$Element<any>, options: TestRendererOptions) {
     isConcurrent ? ConcurrentRoot : LegacyRoot,
     false,
     null,
-    strictModeLevel,
+    isStrictMode,
     concurrentUpdatesByDefault,
   );
   invariant(root != null, 'something went wrong');