first commit

test/integration/export-getInitialProps-warn/next.config.js

@@ -0,0 +1,11 @@
+module.exports = {
+  output: 'export',
+  exportPathMap: async function (
+    defaultPathMap,
+    { dev, dir, outDir, distDir, buildId }
+  ) {
+    return {
+      '/': { page: '/' },
+    }
+  },
+}

test/integration/export-getInitialProps-warn/pages/index.js

@@ -0,0 +1,5 @@
+const Page = ({ name }) => <div>{`Hello, ${name}`}</div>
+
+Page.getInitialProps = () => ({ name: 'world' })
+
+export default Page

test/integration/export-getInitialProps-warn/test/index.test.ts

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+/* eslint-env jest */
+
+import { join } from 'path'
+import { nextBuild } from 'next-test-utils'
+
+const appDir = join(__dirname, '../')
+
+describe('Export with getInitialProps', () => {
+  ;(process.env.TURBOPACK_DEV ? describe.skip : describe)(
+    'production mode',
+    () => {
+      it('should show warning with next export', async () => {
+        const { stderr } = await nextBuild(appDir, [], { stderr: true })
+        expect(stderr).toContain(
+          'https://nextjs.org/docs/messages/get-initial-props-export'
+        )
+      })
+    }
+  )
+})