diff --git a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Legacy-itest.js b/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Legacy-itest.js
deleted file mode 100644
index e5c2d930d45..00000000000
--- a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Legacy-itest.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @fantom_flags enableAccessToHostTreeInFabric:false
- * @flow strict-local
- * @format
- */
-
-import setUpReactFabricPublicInstanceFantomTests from './setUpReactFabricPublicInstanceFantomTests';
-
-setUpReactFabricPublicInstanceFantomTests({isModern: false});
diff --git a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Modern-itest.js b/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Modern-itest.js
deleted file mode 100644
index 815917cceb6..00000000000
--- a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-Modern-itest.js
+++ /dev/null
@@ -1,14 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @fantom_flags enableAccessToHostTreeInFabric:true
- * @flow strict-local
- * @format
- */
-
-import setUpReactFabricPublicInstanceFantomTests from './setUpReactFabricPublicInstanceFantomTests';
-
-setUpReactFabricPublicInstanceFantomTests({isModern: true});
diff --git a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-itest.js b/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-itest.js
new file mode 100644
index 00000000000..a2960ebdcc4
--- /dev/null
+++ b/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/ReactFabricPublicInstance-itest.js
@@ -0,0 +1,406 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ * @fantom_flags enableAccessToHostTreeInFabric:*
+ */
+
+import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
+
+import type {HostInstance} from 'react-native';
+
+import ReactNativeElement from '../../../../src/private/webapis/dom/nodes/ReactNativeElement';
+import {getRawNativeDOMForTests} from '../../../../src/private/webapis/dom/nodes/specs/NativeDOM';
+import TextInputState from '../../../Components/TextInput/TextInputState';
+import View from '../../../Components/View/View';
+import ReactFabricHostComponent from '../ReactFabricHostComponent';
+import * as Fantom from '@react-native/fantom';
+import nullthrows from 'nullthrows';
+import * as React from 'react';
+import {createRef} from 'react';
+import * as ReactNativeFeatureFlags from 'react-native/src/private/featureflags/ReactNativeFeatureFlags';
+
+// TODO: move these tests to the test file for `ReactNativeElement` when the legacy implementation is removed.
+describe('ReactFabricPublicInstance', () => {
+  it('should provide instances of the right class as refs in host components', () => {
+    const nodeRef = createRef<HostInstance>();
+
+    const root = Fantom.createRoot();
+    Fantom.runTask(() => {
+      root.render(<View ref={nodeRef} />);
+    });
+
+    const node = nullthrows(nodeRef.current);
+
+    expect(node).toBeInstanceOf(
+      ReactNativeFeatureFlags.enableAccessToHostTreeInFabric()
+        ? ReactNativeElement
+        : ReactFabricHostComponent,
+    );
+  });
+
+  describe('blur', () => {
+    test('blur() invokes TextInputState', () => {
+      const root = Fantom.createRoot();
+      const nodeRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<View ref={nodeRef} />);
+      });
+
+      const node = nullthrows(nodeRef.current);
+
+      const blurTextInput = jest.fn();
+
+      // We don't support view commands in Fantom yet, so we have to mock this.
+      TextInputState.blurTextInput = blurTextInput;
+
+      Fantom.runTask(() => {
+        node.blur();
+      });
+
+      expect(blurTextInput).toHaveBeenCalledTimes(1);
+      expect(blurTextInput.mock.calls).toEqual([[node]]);
+    });
+  });
+
+  describe('focus', () => {
+    test('focus() invokes TextInputState', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<View ref={ref} />);
+      });
+
+      const node = nullthrows(ref.current);
+
+      const focusTextInput = jest.fn();
+
+      // We don't support view commands in Fantom yet, so we have to mock this.
+      TextInputState.focusTextInput = focusTextInput;
+
+      Fantom.runTask(() => {
+        node.focus();
+      });
+
+      expect(focusTextInput).toHaveBeenCalledTimes(1);
+      expect(focusTextInput.mock.calls).toEqual([[node]]);
+    });
+  });
+
+  describe('measure', () => {
+    it('component.measure(...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      const callback = jest.fn();
+      node.measure(callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[10, 10, 100, 100, 10, 10]]);
+    });
+
+    it('unmounted.measure(...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      node.measure(callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('measureInWindow', () => {
+    it('component.measureInWindow(...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      const callback = jest.fn();
+      node.measureInWindow(callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[10, 10, 100, 100]]);
+    });
+
+    it('unmounted.measureInWindow(...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const ref = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={ref}
+          />,
+        );
+      });
+
+      const node = nullthrows(ref.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      node.measureInWindow(callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('measureLayout', () => {
+    it('component.measureLayout(component, ...) invokes callback', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).toHaveBeenCalledTimes(1);
+      expect(callback.mock.calls).toEqual([[20, 20, 10, 10]]);
+    });
+
+    it('unmounted.measureLayout(component, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(
+          <View style={{width: 100, height: 100, left: 10, top: 10}} />,
+        );
+      });
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+
+    it('component.measureLayout(unmounted, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(
+          <View style={{width: 100, height: 100, left: 10, top: 10}} />,
+        );
+      });
+
+      const callback = jest.fn();
+      parentNode.measureLayout(childNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+
+    it('unmounted.measureLayout(unmounted, ...) does nothing', () => {
+      const root = Fantom.createRoot();
+      const parentRef = createRef<HostInstance>();
+      const childRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(
+          <View
+            style={{width: 100, height: 100, left: 10, top: 10}}
+            ref={parentRef}>
+            <View
+              style={{width: 10, height: 10, left: 20, top: 20}}
+              ref={childRef}
+            />
+          </View>,
+        );
+      });
+
+      const parentNode = nullthrows(parentRef.current);
+      const childNode = nullthrows(childRef.current);
+
+      Fantom.runTask(() => {
+        root.render(<></>);
+      });
+
+      const callback = jest.fn();
+      childNode.measureLayout(parentNode, callback);
+
+      expect(callback).not.toHaveBeenCalled();
+    });
+  });
+
+  describe('setNativeProps', () => {
+    it('should propagate changes to the host component', () => {
+      const root = Fantom.createRoot();
+      const nodeRef = createRef<HostInstance>();
+
+      Fantom.runTask(() => {
+        root.render(<View ref={nodeRef} testID="first test id" />);
+      });
+
+      expect(
+        root
+          .getRenderedOutput({
+            props: ['testID'],
+          })
+          .toJSX(),
+      ).toEqual(<rn-view testID={'first test id'} />);
+
+      const element = nullthrows(nodeRef.current);
+
+      Fantom.runTask(() => {
+        element.setNativeProps({testID: 'second test id'});
+      });
+
+      expect(
+        root
+          .getRenderedOutput({
+            props: ['testID'],
+          })
+          .toJSX(),
+      ).toEqual(<rn-view testID={'second test id'} />);
+    });
+
+    // TODO: delete when NativeDOM.setNativeProps is NOT nullable.
+    // This logic is to ensure compatibility with old app versions without the native module method.
+    if (ReactNativeFeatureFlags.enableAccessToHostTreeInFabric()) {
+      let RawNativeDOM;
+      let originalSetNativeProps;
+
+      beforeAll(() => {
+        RawNativeDOM = nullthrows(getRawNativeDOMForTests());
+        originalSetNativeProps = RawNativeDOM.setNativeProps;
+      });
+
+      beforeEach(() => {
+        // $FlowExpectedError[cannot-write]
+        RawNativeDOM.setNativeProps = originalSetNativeProps;
+      });
+
+      it('should propagate changes to the host component (when NativeDOM.setNativeProps is not available)', () => {
+        // $FlowExpectedError[cannot-write]
+        RawNativeDOM.setNativeProps = null;
+
+        expect(RawNativeDOM.setNativeProps).toBeNull();
+
+        const root = Fantom.createRoot();
+        const nodeRef = createRef<HostInstance>();
+
+        Fantom.runTask(() => {
+          root.render(<View ref={nodeRef} testID="first test id" />);
+        });
+
+        expect(
+          root
+            .getRenderedOutput({
+              props: ['testID'],
+            })
+            .toJSX(),
+        ).toEqual(<rn-view testID={'first test id'} />);
+
+        const element = nullthrows(nodeRef.current);
+
+        Fantom.runTask(() => {
+          element.setNativeProps({testID: 'second test id'});
+        });
+
+        expect(
+          root
+            .getRenderedOutput({
+              props: ['testID'],
+            })
+            .toJSX(),
+        ).toEqual(<rn-view testID={'second test id'} />);
+      });
+    }
+  });
+});
diff --git a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/setUpReactFabricPublicInstanceFantomTests.js b/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/setUpReactFabricPublicInstanceFantomTests.js
deleted file mode 100644
index 58058e3c8c4..00000000000
--- a/packages/react-native/Libraries/ReactNative/ReactFabricPublicInstance/__tests__/setUpReactFabricPublicInstanceFantomTests.js
+++ /dev/null
@@ -1,404 +0,0 @@
-/**
- * Copyright (c) Meta Platforms, Inc. and affiliates.
- *
- * This source code is licensed under the MIT license found in the
- * LICENSE file in the root directory of this source tree.
- *
- * @flow strict-local
- * @format
- */
-
-import '@react-native/fantom/src/setUpDefaultReactNativeEnvironment';
-
-import type {HostInstance} from 'react-native';
-
-import ReactNativeElement from '../../../../src/private/webapis/dom/nodes/ReactNativeElement';
-import {getRawNativeDOMForTests} from '../../../../src/private/webapis/dom/nodes/specs/NativeDOM';
-import TextInputState from '../../../Components/TextInput/TextInputState';
-import View from '../../../Components/View/View';
-import ReactFabricHostComponent from '../ReactFabricHostComponent';
-import * as Fantom from '@react-native/fantom';
-import nullthrows from 'nullthrows';
-import * as React from 'react';
-import {createRef} from 'react';
-
-export default function setUpTests({isModern}: {isModern: boolean}) {
-  // TODO: move these tests to the test file for `ReactNativeElement` when the legacy implementation is removed.
-  describe(`ReactFabricPublicInstance (${isModern ? 'modern' : 'legacy'})`, () => {
-    it('should provide instances of the right class as refs in host components', () => {
-      const nodeRef = createRef<HostInstance>();
-
-      const root = Fantom.createRoot();
-      Fantom.runTask(() => {
-        root.render(<View ref={nodeRef} />);
-      });
-
-      const node = nullthrows(nodeRef.current);
-
-      expect(node).toBeInstanceOf(
-        isModern ? ReactNativeElement : ReactFabricHostComponent,
-      );
-    });
-
-    describe('blur', () => {
-      test('blur() invokes TextInputState', () => {
-        const root = Fantom.createRoot();
-        const nodeRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(<View ref={nodeRef} />);
-        });
-
-        const node = nullthrows(nodeRef.current);
-
-        const blurTextInput = jest.fn();
-
-        // We don't support view commands in Fantom yet, so we have to mock this.
-        TextInputState.blurTextInput = blurTextInput;
-
-        Fantom.runTask(() => {
-          node.blur();
-        });
-
-        expect(blurTextInput).toHaveBeenCalledTimes(1);
-        expect(blurTextInput.mock.calls).toEqual([[node]]);
-      });
-    });
-
-    describe('focus', () => {
-      test('focus() invokes TextInputState', () => {
-        const root = Fantom.createRoot();
-        const ref = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(<View ref={ref} />);
-        });
-
-        const node = nullthrows(ref.current);
-
-        const focusTextInput = jest.fn();
-
-        // We don't support view commands in Fantom yet, so we have to mock this.
-        TextInputState.focusTextInput = focusTextInput;
-
-        Fantom.runTask(() => {
-          node.focus();
-        });
-
-        expect(focusTextInput).toHaveBeenCalledTimes(1);
-        expect(focusTextInput.mock.calls).toEqual([[node]]);
-      });
-    });
-
-    describe('measure', () => {
-      it('component.measure(...) invokes callback', () => {
-        const root = Fantom.createRoot();
-        const ref = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={ref}
-            />,
-          );
-        });
-
-        const node = nullthrows(ref.current);
-
-        const callback = jest.fn();
-        node.measure(callback);
-
-        expect(callback).toHaveBeenCalledTimes(1);
-        expect(callback.mock.calls).toEqual([[10, 10, 100, 100, 10, 10]]);
-      });
-
-      it('unmounted.measure(...) does nothing', () => {
-        const root = Fantom.createRoot();
-        const ref = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={ref}
-            />,
-          );
-        });
-
-        const node = nullthrows(ref.current);
-
-        Fantom.runTask(() => {
-          root.render(<></>);
-        });
-
-        const callback = jest.fn();
-        node.measure(callback);
-
-        expect(callback).not.toHaveBeenCalled();
-      });
-    });
-
-    describe('measureInWindow', () => {
-      it('component.measureInWindow(...) invokes callback', () => {
-        const root = Fantom.createRoot();
-        const ref = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={ref}
-            />,
-          );
-        });
-
-        const node = nullthrows(ref.current);
-
-        const callback = jest.fn();
-        node.measureInWindow(callback);
-
-        expect(callback).toHaveBeenCalledTimes(1);
-        expect(callback.mock.calls).toEqual([[10, 10, 100, 100]]);
-      });
-
-      it('unmounted.measureInWindow(...) does nothing', () => {
-        const root = Fantom.createRoot();
-        const ref = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={ref}
-            />,
-          );
-        });
-
-        const node = nullthrows(ref.current);
-
-        Fantom.runTask(() => {
-          root.render(<></>);
-        });
-
-        const callback = jest.fn();
-        node.measureInWindow(callback);
-
-        expect(callback).not.toHaveBeenCalled();
-      });
-    });
-
-    describe('measureLayout', () => {
-      it('component.measureLayout(component, ...) invokes callback', () => {
-        const root = Fantom.createRoot();
-        const parentRef = createRef<HostInstance>();
-        const childRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={parentRef}>
-              <View
-                style={{width: 10, height: 10, left: 20, top: 20}}
-                ref={childRef}
-              />
-            </View>,
-          );
-        });
-
-        const parentNode = nullthrows(parentRef.current);
-        const childNode = nullthrows(childRef.current);
-
-        const callback = jest.fn();
-        childNode.measureLayout(parentNode, callback);
-
-        expect(callback).toHaveBeenCalledTimes(1);
-        expect(callback.mock.calls).toEqual([[20, 20, 10, 10]]);
-      });
-
-      it('unmounted.measureLayout(component, ...) does nothing', () => {
-        const root = Fantom.createRoot();
-        const parentRef = createRef<HostInstance>();
-        const childRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={parentRef}>
-              <View
-                style={{width: 10, height: 10, left: 20, top: 20}}
-                ref={childRef}
-              />
-            </View>,
-          );
-        });
-
-        const parentNode = nullthrows(parentRef.current);
-        const childNode = nullthrows(childRef.current);
-
-        Fantom.runTask(() => {
-          root.render(
-            <View style={{width: 100, height: 100, left: 10, top: 10}} />,
-          );
-        });
-
-        const callback = jest.fn();
-        childNode.measureLayout(parentNode, callback);
-
-        expect(callback).not.toHaveBeenCalled();
-      });
-
-      it('component.measureLayout(unmounted, ...) does nothing', () => {
-        const root = Fantom.createRoot();
-        const parentRef = createRef<HostInstance>();
-        const childRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={parentRef}>
-              <View
-                style={{width: 10, height: 10, left: 20, top: 20}}
-                ref={childRef}
-              />
-            </View>,
-          );
-        });
-
-        const parentNode = nullthrows(parentRef.current);
-        const childNode = nullthrows(childRef.current);
-
-        Fantom.runTask(() => {
-          root.render(
-            <View style={{width: 100, height: 100, left: 10, top: 10}} />,
-          );
-        });
-
-        const callback = jest.fn();
-        parentNode.measureLayout(childNode, callback);
-
-        expect(callback).not.toHaveBeenCalled();
-      });
-
-      it('unmounted.measureLayout(unmounted, ...) does nothing', () => {
-        const root = Fantom.createRoot();
-        const parentRef = createRef<HostInstance>();
-        const childRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(
-            <View
-              style={{width: 100, height: 100, left: 10, top: 10}}
-              ref={parentRef}>
-              <View
-                style={{width: 10, height: 10, left: 20, top: 20}}
-                ref={childRef}
-              />
-            </View>,
-          );
-        });
-
-        const parentNode = nullthrows(parentRef.current);
-        const childNode = nullthrows(childRef.current);
-
-        Fantom.runTask(() => {
-          root.render(<></>);
-        });
-
-        const callback = jest.fn();
-        childNode.measureLayout(parentNode, callback);
-
-        expect(callback).not.toHaveBeenCalled();
-      });
-    });
-
-    describe('setNativeProps', () => {
-      it('should propagate changes to the host component', () => {
-        const root = Fantom.createRoot();
-        const nodeRef = createRef<HostInstance>();
-
-        Fantom.runTask(() => {
-          root.render(<View ref={nodeRef} testID="first test id" />);
-        });
-
-        expect(
-          root
-            .getRenderedOutput({
-              props: ['testID'],
-            })
-            .toJSX(),
-        ).toEqual(<rn-view testID={'first test id'} />);
-
-        const element = nullthrows(nodeRef.current);
-
-        Fantom.runTask(() => {
-          element.setNativeProps({testID: 'second test id'});
-        });
-
-        expect(
-          root
-            .getRenderedOutput({
-              props: ['testID'],
-            })
-            .toJSX(),
-        ).toEqual(<rn-view testID={'second test id'} />);
-      });
-
-      // TODO: delete when NativeDOM.setNativeProps is NOT nullable.
-      // This logic is to ensure compatibility with old app versions without the native module method.
-      if (isModern) {
-        let RawNativeDOM;
-        let originalSetNativeProps;
-
-        beforeAll(() => {
-          RawNativeDOM = nullthrows(getRawNativeDOMForTests());
-          originalSetNativeProps = RawNativeDOM.setNativeProps;
-        });
-
-        beforeEach(() => {
-          // $FlowExpectedError[cannot-write]
-          RawNativeDOM.setNativeProps = originalSetNativeProps;
-        });
-
-        it('should propagate changes to the host component (when NativeDOM.setNativeProps is not available)', () => {
-          // $FlowExpectedError[cannot-write]
-          RawNativeDOM.setNativeProps = null;
-
-          expect(RawNativeDOM.setNativeProps).toBeNull();
-
-          const root = Fantom.createRoot();
-          const nodeRef = createRef<HostInstance>();
-
-          Fantom.runTask(() => {
-            root.render(<View ref={nodeRef} testID="first test id" />);
-          });
-
-          expect(
-            root
-              .getRenderedOutput({
-                props: ['testID'],
-              })
-              .toJSX(),
-          ).toEqual(<rn-view testID={'first test id'} />);
-
-          const element = nullthrows(nodeRef.current);
-
-          Fantom.runTask(() => {
-            element.setNativeProps({testID: 'second test id'});
-          });
-
-          expect(
-            root
-              .getRenderedOutput({
-                props: ['testID'],
-              })
-              .toJSX(),
-          ).toEqual(<rn-view testID={'second test id'} />);
-        });
-      }
-    });
-  });
-}