theme-ui-next-example

Example usage of Next.js with theme-ui

1. ensures that the color mode works correctly
2. persis the color mode in a cookie that gets parsed on the server as well

running locally

now dev

issues

Currently you get a warning if your cookie is set to darkmode:

index.esm.js:431 The initialColorMode value should be a unique nameand cannot reference a key in theme.colors.modes

I believe that this is ~the only way to initilize the color mode correctly with a cookie on the server, so perhaps the warning is overly aggressive.

Also for some reason codesandbox doesn't work with this repository (error about hooks).