Add one more test

packages/mdx/test/compile.js

@@ -815,6 +815,28 @@ test('jsx', async () => {
       '}',
       ''
     ].join('\n'),
+    'should always inject _missingMdxReference checks'
+  )
+
+  assert.equal(
+    String(compileSync('<a render={(x) => <x.y />} />', {jsx: true})),
+    [
+      '/*@jsxRuntime automatic @jsxImportSource react*/',
+      'function MDXContent(props = {}) {',
+      '  const {wrapper: MDXLayout} = props.components || ({});',
+      '  return MDXLayout ? <MDXLayout {...props}><_createMdxContent /></MDXLayout> : _createMdxContent();',
+      '  function _createMdxContent() {',
+      '    if (!x) _missingMdxReference("x", false);',
+      '    if (!x.y) _missingMdxReference("x.y", true);',
+      '    return <a render={x => <x.y />} />;',
+      '  }',
+      '}',
+      'export default MDXContent;',
+      'function _missingMdxReference(id, component) {',
+      '  throw new Error("Expected " + (component ? "component" : "object") + " `" + id + "` to be defined: you likely forgot to import, pass, or provide it.");',
+      '}',
+      ''
+    ].join('\n'),
     'should serialize members inside expressions'
   )