Build breaks with React 19 and Next.js 15. I had to add JSX to the import line for it to build

[rarebdavis]

Hi! 👋

Firstly, thanks for your work on this project! 🙂

Today I used patch-package to patch react-markdown@8.0.7 for the project I'm working on.

It was breaking the build with React 19 and Next.js 15. I had to add JSX to the import statement:
import type {ReactNode, ComponentType, ComponentPropsWithoutRef, JSX} from 'react'

Here is the diff that solved my problem:

diff --git a/node_modules/react-markdown/lib/complex-types.d.ts b/node_modules/react-markdown/lib/complex-types.d.ts
index f67d04a..b62cadf 100644
--- a/node_modules/react-markdown/lib/complex-types.d.ts
+++ b/node_modules/react-markdown/lib/complex-types.d.ts
@@ -1,4 +1,4 @@
-import type {ReactNode, ComponentType, ComponentPropsWithoutRef} from 'react'
+import type {ReactNode, ComponentType, ComponentPropsWithoutRef, JSX} from 'react'
 import type {Position} from 'unist'
 import type {Element} from 'hast'
 export type ReactMarkdownProps = {
diff --git a/node_modules/react-markdown/lib/complex-types.ts b/node_modules/react-markdown/lib/complex-types.ts
index 5319a88..efd64bf 100644
--- a/node_modules/react-markdown/lib/complex-types.ts
+++ b/node_modules/react-markdown/lib/complex-types.ts
@@ -1,4 +1,4 @@
-import type {ReactNode, ComponentType, ComponentPropsWithoutRef} from 'react'
+import type {ReactNode, ComponentType, ComponentPropsWithoutRef, JSX} from 'react'
 import type {Position} from 'unist'
 import type {Element} from 'hast'
 

This issue body was partially generated by patch-package.

[remcohaszing]

You’re using an old version of react-markdown that doesn’t support React 19.