Ensure config's experimental field exists

A recent change sets `experimental.reactRoot` on the user's config without checking if the `experimental` key already exists.
vercel · Feb 17, 2022 · 3dbf718 · 3dbf718
1 parent 787186a
commit 3dbf718
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/packages/next/server/config.ts b/packages/next/server/config.ts
@@ -678,6 +678,8 @@ export default async function loadConfig(
 
  const hasReactRoot = shouldUseReactRoot()
  if (hasReactRoot) {
+ // users might not have the `experimental` key in their config
+ userConfig.experimental = userConfig.experimental || {}
  userConfig.experimental.reactRoot = true
  }