Add meta data for undefined type

packages/react-server/src/ReactFizzServer.js

@@ -1032,13 +1032,27 @@ function renderElement(
  }
  }
 
+ let info = '';
+ if (__DEV__) {
+ if (
+ type === undefined ||
+ (typeof type === 'object' &&
+ type !== null &&
+ Object.keys(type).length === 0)
+ ) {
+ info +=
+ ' You likely forgot to export your component from the file ' +
+ "it's defined in, or you might have mixed up default and " +
+ 'named imports.';
+ }
+ }
  invariant(
  false,
  'Element type is invalid: expected a string (for built-in ' +
  'components) or a class/function (for composite components) ' +
  'but got: %s.%s',
  type == null ? type : typeof type,
- '',
+ info,
  );
 }