diff --git a/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js b/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
index d75afafcff8e1..1d70e558f0a27 100644
--- a/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
+++ b/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
@@ -7,7 +7,7 @@
  * @flow
  */
 
-import type {HostDispatcher} from 'react-dom/src/ReactDOMDispatcher';
+import type {HostDispatcher} from 'react-dom/src/shared/ReactDOMTypes';
 import type {EventPriority} from 'react-reconciler/src/ReactEventPriorities';
 import type {DOMEventName} from '../events/DOMEventNames';
 import type {Fiber, FiberRoot} from 'react-reconciler/src/ReactInternalTypes';
@@ -19,6 +19,12 @@ import type {
 import type {ReactScopeInstance} from 'shared/ReactTypes';
 import type {AncestorInfoDev} from './validateDOMNesting';
 import type {FormStatus} from 'react-dom-bindings/src/shared/ReactDOMFormActions';
+import type {
+  PrefetchDNSOptions,
+  PreconnectOptions,
+  PreloadOptions,
+  PreinitOptions,
+} from 'react-dom/src/shared/ReactDOMTypes';
 
 import {NotPending} from 'react-dom-bindings/src/shared/ReactDOMFormActions';
 import {getCurrentRootHostContainer} from 'react-reconciler/src/ReactFiberHostContext';
@@ -2095,7 +2101,7 @@ function preconnectAs(
   }
 }
 
-function prefetchDNS(href: string, options?: mixed) {
+function prefetchDNS(href: string, options?: ?PrefetchDNSOptions) {
   if (!enableFloat) {
     return;
   }
@@ -2125,7 +2131,7 @@ function prefetchDNS(href: string, options?: mixed) {
   preconnectAs('dns-prefetch', null, href);
 }
 
-function preconnect(href: string, options: ?{crossOrigin?: string}) {
+function preconnect(href: string, options?: ?PreconnectOptions) {
   if (!enableFloat) {
     return;
   }
@@ -2156,13 +2162,6 @@ function preconnect(href: string, options: ?{crossOrigin?: string}) {
   preconnectAs('preconnect', crossOrigin, href);
 }
 
-type PreloadOptions = {
-  as: string,
-  crossOrigin?: string,
-  integrity?: string,
-  type?: string,
-  fetchPriority?: 'high' | 'low' | 'auto',
-};
 function preload(href: string, options: PreloadOptions) {
   if (!enableFloat) {
     return;
@@ -2238,14 +2237,6 @@ function preloadPropsFromPreloadOptions(
   };
 }
 
-type PreinitOptions = {
-  as: string,
-  precedence?: string,
-  crossOrigin?: string,
-  integrity?: string,
-  nonce?: string,
-  fetchPriority?: 'high' | 'low' | 'auto',
-};
 function preinit(href: string, options: PreinitOptions) {
   if (!enableFloat) {
     return;
diff --git a/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js b/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js
index f8c9becaf5e4f..4aa5ea9f5be94 100644
--- a/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js
+++ b/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js
@@ -13,7 +13,7 @@ import type {
   PreconnectOptions,
   PreloadOptions,
   PreinitOptions,
-} from 'react-dom/src/ReactDOMDispatcher';
+} from 'react-dom/src/shared/ReactDOMTypes';
 
 import {enableFloat} from 'shared/ReactFeatureFlags';
 
@@ -52,7 +52,7 @@ function prefetchDNS(href: string, options?: ?PrefetchDNSOptions) {
   }
 }
 
-function preconnect(href: string, options: ?PreconnectOptions) {
+function preconnect(href: string, options?: ?PreconnectOptions) {
   if (enableFloat) {
     if (typeof href === 'string') {
       const request = resolveRequest();
diff --git a/packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js b/packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js
index ecd962a489d0d..fa029c17da0a9 100644
--- a/packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js
+++ b/packages/react-dom-bindings/src/server/ReactFizzConfigDOM.js
@@ -8,6 +8,12 @@
  */
 
 import type {ReactNodeList, ReactCustomFormAction} from 'shared/ReactTypes';
+import type {
+  PrefetchDNSOptions,
+  PreconnectOptions,
+  PreloadOptions,
+  PreinitOptions,
+} from 'react-dom/src/shared/ReactDOMTypes';
 
 import {
   checkHtmlStringCoercion,
@@ -4920,7 +4926,7 @@ function getResourceKey(as: string, href: string): string {
   return `[${as}]${href}`;
 }
 
-export function prefetchDNS(href: string, options?: mixed) {
+export function prefetchDNS(href: string, options?: ?PrefetchDNSOptions) {
   if (!enableFloat) {
     return;
   }
@@ -4979,7 +4985,7 @@ export function prefetchDNS(href: string, options?: mixed) {
   }
 }
 
-export function preconnect(href: string, options?: ?{crossOrigin?: string}) {
+export function preconnect(href: string, options?: ?PreconnectOptions) {
   if (!enableFloat) {
     return;
   }
@@ -5042,13 +5048,6 @@ export function preconnect(href: string, options?: ?{crossOrigin?: string}) {
   }
 }
 
-type PreloadOptions = {
-  as: string,
-  crossOrigin?: string,
-  integrity?: string,
-  type?: string,
-  fetchPriority?: 'high' | 'low' | 'auto',
-};
 export function preload(href: string, options: PreloadOptions) {
   if (!enableFloat) {
     return;
@@ -5187,14 +5186,6 @@ export function preload(href: string, options: PreloadOptions) {
   }
 }
 
-type PreinitOptions = {
-  as: string,
-  precedence?: string,
-  crossOrigin?: string,
-  integrity?: string,
-  nonce?: string,
-  fetchPriority?: 'high' | 'low' | 'auto',
-};
 function preinit(href: string, options: PreinitOptions): void {
   if (!enableFloat) {
     return;
diff --git a/packages/react-dom-bindings/src/server/ReactFlightServerConfigDOM.js b/packages/react-dom-bindings/src/server/ReactFlightServerConfigDOM.js
index c7ce2e767ef98..ffed50d8580a3 100644
--- a/packages/react-dom-bindings/src/server/ReactFlightServerConfigDOM.js
+++ b/packages/react-dom-bindings/src/server/ReactFlightServerConfigDOM.js
@@ -12,7 +12,7 @@ import type {
   PreconnectOptions,
   PreloadOptions,
   PreinitOptions,
-} from 'react-dom/src/ReactDOMDispatcher';
+} from 'react-dom/src/shared/ReactDOMTypes';
 
 import ReactDOMSharedInternals from 'shared/ReactDOMSharedInternals';
 const ReactDOMCurrentDispatcher = ReactDOMSharedInternals.Dispatcher;
diff --git a/packages/react-dom/src/ReactDOMSharedInternals.js b/packages/react-dom/src/ReactDOMSharedInternals.js
index cf2909ffac2ff..b082b4a19cc27 100644
--- a/packages/react-dom/src/ReactDOMSharedInternals.js
+++ b/packages/react-dom/src/ReactDOMSharedInternals.js
@@ -7,7 +7,7 @@
  * @flow
  */
 
-import type {HostDispatcher} from './ReactDOMDispatcher';
+import type {HostDispatcher} from './shared/ReactDOMTypes';
 
 type InternalsType = {
   usingClientEntryPoint: boolean,
diff --git a/packages/react-dom/src/client/ReactDOM.js b/packages/react-dom/src/client/ReactDOM.js
index ec465dfaef14b..734dace347a32 100644
--- a/packages/react-dom/src/client/ReactDOM.js
+++ b/packages/react-dom/src/client/ReactDOM.js
@@ -55,7 +55,12 @@ import {
 } from 'react-dom-bindings/src/events/ReactDOMControlledComponent';
 import Internals from '../ReactDOMSharedInternals';
 
-export {prefetchDNS, preconnect, preload, preinit} from '../ReactDOMFloat';
+export {
+  prefetchDNS,
+  preconnect,
+  preload,
+  preinit,
+} from '../shared/ReactDOMFloat';
 export {useFormStatus} from 'react-dom-bindings/src/shared/ReactDOMFormActions';
 
 if (__DEV__) {
diff --git a/packages/react-dom/src/server/ReactDOMServerRenderingStub.js b/packages/react-dom/src/server/ReactDOMServerRenderingStub.js
index ecb46bec0c4a2..ea079ce1bdd55 100644
--- a/packages/react-dom/src/server/ReactDOMServerRenderingStub.js
+++ b/packages/react-dom/src/server/ReactDOMServerRenderingStub.js
@@ -7,7 +7,12 @@
  * @flow
  */
 
-export {preinit, preload, preconnect, prefetchDNS} from '../ReactDOMFloat';
+export {
+  preinit,
+  preload,
+  preconnect,
+  prefetchDNS,
+} from '../shared/ReactDOMFloat';
 export {useFormStatus as experimental_useFormStatus} from 'react-dom-bindings/src/shared/ReactDOMFormActions';
 
 export function createPortal() {
diff --git a/packages/react-dom/src/ReactDOMFloat.js b/packages/react-dom/src/shared/ReactDOMFloat.js
similarity index 98%
rename from packages/react-dom/src/ReactDOMFloat.js
rename to packages/react-dom/src/shared/ReactDOMFloat.js
index 25a03fcd092e9..302f0aa87c8e5 100644
--- a/packages/react-dom/src/ReactDOMFloat.js
+++ b/packages/react-dom/src/shared/ReactDOMFloat.js
@@ -10,7 +10,7 @@ import type {
   PreconnectOptions,
   PreloadOptions,
   PreinitOptions,
-} from './ReactDOMDispatcher';
+} from './ReactDOMTypes';
 
 import ReactDOMSharedInternals from 'shared/ReactDOMSharedInternals';
 const Dispatcher = ReactDOMSharedInternals.Dispatcher;
diff --git a/packages/react-dom/src/ReactDOMDispatcher.js b/packages/react-dom/src/shared/ReactDOMTypes.js
similarity index 100%
rename from packages/react-dom/src/ReactDOMDispatcher.js
rename to packages/react-dom/src/shared/ReactDOMTypes.js