fix: hide turbopack warnings

packages/next/src/withPayload.js

@@ -15,6 +15,43 @@ export const withPayload = (nextConfig = {}, options = {}) => {
     env.NEXT_PUBLIC_ENABLE_ROUTER_CACHE_REFRESH = 'true'
   }
 
+  if (process.env.PAYLOAD_PATCH_TURBOPACK_WARNINGS !== 'false') {
+    // TODO: This warning is thrown because we cannot externalize the entry-point package for client-s3, so we patch the warning to not show it.
+    // We can remove this once Next.js implements https://github.com/vercel/next.js/discussions/76991
+    const turbopackWarningText =
+      'Packages that should be external need to be installed in the project directory, so they can be resolved from the output files.\nTry to install it into the project directory by running'
+
+    // TODO 4.0: Remove this once we drop support for Next.js 15.2.x
+    const turbopackConfigWarningText = "Unrecognized key(s) in object: 'turbopack'"
+
+    const consoleWarn = console.warn
+    console.warn = (...args) => {
+      // Force to disable serverExternalPackages warnings: https://github.com/vercel/next.js/issues/68805
+      if (
+        (typeof args[1] === 'string' && args[1].includes(turbopackWarningText)) ||
+        (typeof args[0] === 'string' && args[0].includes(turbopackWarningText))
+      ) {
+        return
+      }
+
+      // Add Payload-specific message after turbopack config warning in Next.js 15.2.x or lower.
+      // TODO 4.0: Remove this once we drop support for Next.js 15.2.x
+      const hasTurbopackConfigWarning =
+        (typeof args[1] === 'string' && args[1].includes(turbopackConfigWarningText)) ||
+        (typeof args[0] === 'string' && args[0].includes(turbopackConfigWarningText))
+
+      if (hasTurbopackConfigWarning) {
+        consoleWarn(...args)
+        consoleWarn(
+          'Payload: You can safely ignore the "Invalid next.config" warning above. This only occurs on Next.js 15.2.x or lower. We recommend upgrading to Next.js 15.4.7 to resolve this warning.',
+        )
+        return
+      }
+
+      consoleWarn(...args)
+    }
+  }
+
   const poweredByHeader = {
     key: 'X-Powered-By',
     value: 'Next.js, Payload',