🙋 feature request: built-in SSR for using bundler middleware

• Add an ssr option that, when enabled, renders React components into their including .html files, calling getInitialProps({req}) before rendering a la next.js
• Extend server to call a render method on assets if ssr: true
• Add a built-in render method to HTMLAsset that traverses linked assets, finds occurrences of ReactDOM.render/createPortal in JS/JSX files, and uses ReactDOMServer to render to a string and replace the contents of the HTML.

See also: #355

[lbguilherme]

Just would like to add that for SSR to be useful, it is quite complicated. It must:

• Resolve the route to render the correct component (react-router)
• Understand how the application store state and transfer that state as well (rehydrate)
• Wait for APIs/Database calls from the components so that the rendered result actually have some content
• Do all of that with HMR?

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And parcel serve is not a production server in any way, I don’t think it should handle SSR. Maaaybe parcel would output a separated bundle suitable to run on Node that is a server with SSR for that application. But that sounds too much.

[devongovett]

The problem with this request is that Parcel is not specific to react. So we must design our features in a generic way that considers all possible frameworks.

That being said, if there is a way to have parcel enable this in a generic way so that e.g. plugins could implement SSR for react and other frameworks, that would be awesome. Let’s figure out what that looks like.