diff --git a/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js b/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
index d75afafcff8e1..373a6beea6600 100644
--- a/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
+++ b/packages/react-dom-bindings/src/client/ReactFiberConfigDOM.js
@@ -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/ReactDOMDispatcher';
 
 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..d25fb3b256209 100644
--- a/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js
+++ b/packages/react-dom-bindings/src/server/ReactDOMFlightServerHostDispatcher.js
@@ -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 788b201566aa4..e5bdc39cfa5bb 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/ReactDOMDispatcher';
 
 import {
   checkHtmlStringCoercion,
@@ -4894,7 +4900,7 @@ 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;
   }
@@ -4953,7 +4959,7 @@ 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;
   }
@@ -5016,13 +5022,6 @@ 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;
@@ -5161,14 +5160,6 @@ 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;