Revert "[image, link] fix ref merging for callback refs that return a…

… cleanup function" (#68176)

Seems this is causing us to hit the following error our vercel-site

```sh
 ReferenceError: navigator is not defined
vercel-site:build:     at s (/vercel/path0/apps/vercel-site/.next/server/chunks-EDOwHfQ0FCxDTUqmP-83_/65787.js:161:168406)
vercel-site:build:     at u (/vercel/path0/apps/vercel-site/.next/server/chunks-EDOwHfQ0FCxDTUqmP-83_/65787.js:50:154810)
```

Reverts #68123

packages/next/src/client/image-component.tsx

@@ -31,7 +31,6 @@ import { RouterContext } from '../shared/lib/router-context.shared-runtime'
 
 // @ts-ignore - This is replaced by webpack alias
 import defaultLoader from 'next/dist/shared/lib/image-loader'
-import { useMergedRef } from './use-merged-ref'
 
 // This is replaced by webpack define plugin
 const configEnv = process.env.__NEXT_IMAGE_OPTS as any as ImageConfigComplete
@@ -207,54 +206,6 @@ const ImageElement = forwardRef<HTMLImageElement | null, ImageElementProps>(
     },
     forwardedRef
   ) => {
-    const ownRef = useCallback(
-      (img: ImgElementWithDataProp | null) => {
-        if (!img) {
-          return
-        }
-        if (onError) {
-          // If the image has an error before react hydrates, then the error is lost.
-          // The workaround is to wait until the image is mounted which is after hydration,
-          // then we set the src again to trigger the error handler (if there was an error).
-          // eslint-disable-next-line no-self-assign
-          img.src = img.src
-        }
-        if (process.env.NODE_ENV !== 'production') {
-          if (!src) {
-            console.error(`Image is missing required "src" property:`, img)
-          }
-          if (img.getAttribute('alt') === null) {
-            console.error(
-              `Image is missing required "alt" property. Please add Alternative Text to describe the image for screen readers and search engines.`
-            )
-          }
-        }
-        if (img.complete) {
-          handleLoading(
-            img,
-            placeholder,
-            onLoadRef,
-            onLoadingCompleteRef,
-            setBlurComplete,
-            unoptimized,
-            sizesInput
-          )
-        }
-      },
-      [
-        src,
-        placeholder,
-        onLoadRef,
-        onLoadingCompleteRef,
-        setBlurComplete,
-        onError,
-        unoptimized,
-        sizesInput,
-      ]
-    )
-
-    const ref = useMergedRef(forwardedRef, ownRef)
-
     return (
       <img
         {...rest}
@@ -278,7 +229,59 @@ const ImageElement = forwardRef<HTMLImageElement | null, ImageElementProps>(
         sizes={sizes}
         srcSet={srcSet}
         src={src}
-        ref={ref}
+        ref={useCallback(
+          (img: ImgElementWithDataProp | null) => {
+            if (forwardedRef) {
+              if (typeof forwardedRef === 'function') forwardedRef(img)
+              else if (typeof forwardedRef === 'object') {
+                // @ts-ignore - .current is read only it's usually assigned by react internally
+                forwardedRef.current = img
+              }
+            }
+            if (!img) {
+              return
+            }
+            if (onError) {
+              // If the image has an error before react hydrates, then the error is lost.
+              // The workaround is to wait until the image is mounted which is after hydration,
+              // then we set the src again to trigger the error handler (if there was an error).
+              // eslint-disable-next-line no-self-assign
+              img.src = img.src
+            }
+            if (process.env.NODE_ENV !== 'production') {
+              if (!src) {
+                console.error(`Image is missing required "src" property:`, img)
+              }
+              if (img.getAttribute('alt') === null) {
+                console.error(
+                  `Image is missing required "alt" property. Please add Alternative Text to describe the image for screen readers and search engines.`
+                )
+              }
+            }
+            if (img.complete) {
+              handleLoading(
+                img,
+                placeholder,
+                onLoadRef,
+                onLoadingCompleteRef,
+                setBlurComplete,
+                unoptimized,
+                sizesInput
+              )
+            }
+          },
+          [
+            src,
+            placeholder,
+            onLoadRef,
+            onLoadingCompleteRef,
+            setBlurComplete,
+            onError,
+            unoptimized,
+            sizesInput,
+            forwardedRef,
+          ]
+        )}
         onLoad={(event) => {
           const img = event.currentTarget as ImgElementWithDataProp
           handleLoading(

packages/next/src/client/link.tsx

@@ -22,7 +22,6 @@ import { useIntersection } from './use-intersection'
 import { getDomainLocale } from './get-domain-locale'
 import { addBasePath } from './add-base-path'
 import { PrefetchKind } from './components/router-reducer/router-reducer-types'
-import { useMergedRef } from './use-merged-ref'
 
 type Url = string | UrlObject
 type RequiredKeys<T> = {
@@ -547,7 +546,7 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
       rootMargin: '200px',
     })
 
-    const setIntersectionWithResetRef = React.useCallback(
+    const setRef = React.useCallback(
       (el: Element) => {
         // Before the link getting observed, check if visible state need to be reset
         if (previousAs.current !== as || previousHref.current !== href) {
@@ -557,12 +556,16 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
         }
 
         setIntersectionRef(el)
+        if (childRef) {
+          if (typeof childRef === 'function') childRef(el)
+          else if (typeof childRef === 'object') {
+            childRef.current = el
+          }
+        }
       },
-      [as, href, resetVisible, setIntersectionRef]
+      [as, childRef, href, resetVisible, setIntersectionRef]
     )
 
-    const setRef = useMergedRef(setIntersectionWithResetRef, childRef)
-
     // Prefetch the URL if we haven't already and it's visible.
     React.useEffect(() => {
       // in dev, we only prefetch on hover to avoid wasting resources as the prefetch will trigger compiling the page.

test/integration/link-ref/test/index.test.js

@@ -84,10 +84,6 @@ describe('Invalid hrefs', () => {
       it('should handle child ref that is a function', async () => {
         await noError('/child-ref-func')
       })
-
-      it('should handle child ref that is a function that returns a cleanup function', async () => {
-        await noError('/child-ref-func-cleanup')
-      })
     }
   )
   ;(process.env.TURBOPACK_DEV ? describe.skip : describe)(
@@ -113,10 +109,6 @@ describe('Invalid hrefs', () => {
       it('should preload with child ref with function', async () => {
         await didPrefetch('/child-ref-func')
       })
-
-      it('should preload with child ref with function that returns a cleanup function', async () => {
-        await didPrefetch('/child-ref-func-cleanup')
-      })
     }
   )
 })

test/integration/next-image-new/app-dir/test/index.test.ts

@@ -14,7 +14,6 @@ import {
   nextBuild,
   nextStart,
   renderViaHTTP,
-  retry,
   waitFor,
 } from 'next-test-utils'
 import webdriver from 'next-webdriver'
@@ -1575,19 +1574,6 @@ function runTests(mode) {
       }
     }
   })
-
-  it('should call callback ref cleanups when unmounting', async () => {
-    const browser = await webdriver(appPort, '/ref-cleanup')
-    const getLogs = async () => (await browser.log()).map((log) => log.message)
-
-    await retry(async () => {
-      expect(await getLogs()).toContain('callback ref was cleaned up')
-    })
-
-    expect(await getLogs()).not.toContain(
-      'callback refs that returned a cleanup should never be called with null'
-    )
-  })
 }
 
 describe('Image Component Default Tests', () => {