Window is not defined in SSR

[gregorskii]

Error: window is not defined when using SSR such as nextjs.

[sitoftonic]

@gregorskii I also faced the same problem. Tried to import the module dynamically with ssr to false:

const { Experiment, Variant } = dynamic(() => import('react-google-optimize'), { ssr: false });

But then the NextJs application throws the following Server Error:

Error: Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: undefined. You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

I have investigated the bundled code and it seems the export is named:

export { Experiment, Variant };

Does anybody know how to solve this?