How can I use Emotion with Next.js for server-side rendering?
You can use Emotion with Next.js for SSR by setting up a custom Document to collect styles during server-side rendering.
What steps do I need to follow to set up the custom Document?
First, create a _document.js
file in your pages
directory. Then, import Emotion
and use it to collect styles.
Can you provide a code example for the custom Document?
Sure! Here's a basic example:
import Document, { Html, Head, Main, NextScript } from 'next/document';
import { CacheProvider } from '@emotion/react';
import createEmotionServer from '@emotion/server/create-instance';
import createEmotionCache from '../utils/createEmotionCache';
class MyDocument extends Document {
static async getInitialProps(ctx) {
const cache = createEmotionCache();
const { extractCriticalToChunks } = createEmotionServer(cache);
const originalRenderPage = ctx.renderPage;
ctx.renderPage = () =>
originalRenderPage({
enhanceApp: (App) => (props) => <CacheProvider value={cache}><App {...props} /></CacheProvider>,
});
const initialProps = await Document.getInitialProps(ctx);
const emotionStyles = extractCriticalToChunks(initialProps.html);
return {
...initialProps,
styles: [
<style
key="emotion"
dangerouslySetInnerHTML={{ __html: emotionStyles.styles }}
/>,
initialProps.styles,
],
};
}
render() {
return (
<Html>
<Head>
{this.props.styles}
</Head>
<body>
<Main />
<NextScript />
</body>
</Html>
);
}
}
export default MyDocument;
What about styling components with Emotion?
You can style components using the css
prop or by creating styled components with styled
from Emotion.
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