From ff737c919396682ce1490e776a16e494e51aff33 Mon Sep 17 00:00:00 2001
From: Jake Leventhal <jakeleventhal@me.com>
Date: Wed, 29 Jan 2025 15:08:53 -0500
Subject: [PATCH] (fix: #75439) Handle null or undefined href prop passed into
 componentt

---
 packages/next/src/client/app-dir/link.tsx | 6 ++++--
 packages/next/src/client/link.tsx         | 4 +++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/packages/next/src/client/app-dir/link.tsx b/packages/next/src/client/app-dir/link.tsx
index adf90964deb755..08330ec274dcc5 100644
--- a/packages/next/src/client/app-dir/link.tsx
+++ b/packages/next/src/client/app-dir/link.tsx
@@ -412,7 +412,7 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
     let children: React.ReactNode
 
     const {
-      href: hrefProp,
+      href: unfilteredHrefProp,
       as: asProp,
       children: childrenProp,
       prefetch: prefetchProp = null,
@@ -427,6 +427,8 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
       ...restProps
     } = props
 
+    const hrefProp = unfilteredHrefProp ?? ''
+
     children = childrenProp
 
     if (
@@ -582,7 +584,7 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
     }
 
     const { href, as } = React.useMemo(() => {
-      const resolvedHref = formatStringOrUrl(hrefProp)
+      const resolvedHref = formatStringOrUrl(hrefProp ?? '')
       return {
         href: resolvedHref,
         as: asProp ? formatStringOrUrl(asProp) : resolvedHref,
diff --git a/packages/next/src/client/link.tsx b/packages/next/src/client/link.tsx
index 685033eedd5572..4caa366bda3daa 100644
--- a/packages/next/src/client/link.tsx
+++ b/packages/next/src/client/link.tsx
@@ -255,7 +255,7 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
     let children: React.ReactNode
 
     const {
-      href: hrefProp,
+      href: unfilteredHrefProp,
       as: asProp,
       children: childrenProp,
       prefetch: prefetchProp = null,
@@ -271,6 +271,8 @@ const Link = React.forwardRef<HTMLAnchorElement, LinkPropsReal>(
       ...restProps
     } = props
 
+    const hrefProp = unfilteredHrefProp ?? ''
+
     children = childrenProp
 
     if (