Error 'ReferenceError: "window" is not defined' in browserless environment

[teur]

An issue occurs when polyfills.js is being used in a browserless environment, such as being run directly using Node or Nashorn.

[ghost]

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[gaearon]

What is your use case for running CRA code in a server environment?

[teur]

I want to build an isomorphic application using ReactDomServer.renderToString.

[gaearon]

Create React App doesn’t currently support server rendering, sorry. See #91.
Some of the alternatives might support it.

[teur]

Everything else SSR works fine, just one "window" problem is in polyfills.js for me.
But anyway thanks for your answer.

[gaearon]

How do you configure Babel on the server? We don’t expose Babel configs so I’m not sure how that works for you.

[teur]

I don't use babel on server, I need only a compiled main.*.js result file. I am using java/nashorn js implementation like in https://github.com/pugnascotia/spring-react-boilerplate.

[gaearon]

How do you switch between server and client implementation? Do you just check if window is available?

[teur]

Yes, you are right. I am checking it.

[gaearon]

How do you find the build output? Do you just take the first .js file in the build folder?

[teur]

After executing "react-scripts build" I have only one js file like main.*.js in build/static/js folder, so I take it.

[gaearon]

I see. This might become harder in the future if we start splitting it up into additional bundles. I’d say we don’t officially support that, so your best bet is to eject and then do anything you would like.

[teur]

ok, thanks a lot.

[gaearon]

Yea, sorry if it’s frustrating. Can’t solve all problems in one tool 😄 .