Cannot read property 'render' of undefined

[johanneslumpe]

After swapping up the stock renderer for fast-react-render, the following error popped up when trying to render the page:

(node:11472) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'render' of undefined

Should this library just work when swapping out the renderer or are there non-documented edge cases where it breaks?

[alt-j]

fast-react-render doesn't have render method, it has only one method elementToString.
It is an analogue of ReactDomServer.renderToStaticMarkup.

[johanneslumpe]

@alt-j I am aware of that, and that is not the issue. The issue is that upon calling elementToString the above error is thrown. I am not calling render.

[alt-j]

Can you show source code, or full error stack?

[johanneslumpe]

@alt-j sorry, really busy at the moment. Will try to get you something soon. I haven't been going back to this yet since you pointed out that this is rendering to static markup, which isn't super helpful for me as I do not want a 2nd render on the client. I know there is a PR in place which checks against the DOM instead of the checksums, but since that's not yet merged...