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The global style should be at the top

See original GitHub issue

Current behavior:

When there is more than one emotion cache I want the global style to always be at the top and then be overridden in order The prepend option can only be set to the top or bottom, and the insertionPoint option needs to be passed HTMLElement which does not support SSR

I can adjust the order of ServerStyles here, but there’s no way to override the mantine style directly

MyDocument.getInitialProps = async (ctx: DocumentContext) => {
  const initialProps = await Document.getInitialProps(ctx)
  const server = createEmotionServer(cache)
  return {
    ...initialProps,
    styles: (
      <>
        {initialProps.styles}
        <ServerStyles html={initialProps.html} server={stylesServer} />
        <ServerStyles html={initialProps.html} server={server} />
      </>
    ),
  }
}

To reproduce:

https://github.com/u3u/emotion-issue-2803

Expected behavior:

Environment information:

react version: 18.2.0
@emotion/react version: 11.9.3

Issue Analytics

State:
Created a year ago
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

Andaristcommented, Jul 4, 2022

You can use this patch to work around your issue:

patch for the repro

diff --git a/pages/_app.tsx b/pages/_app.tsx
index f6f61f5..2da5a2e 100755
--- a/pages/_app.tsx
+++ b/pages/_app.tsx
@@ -1,18 +1,46 @@
-import { cache } from '@emotion/css'
 import { CacheProvider } from '@emotion/react'
 import { MantineProvider } from '@mantine/core'
+import createCache from '@emotion/cache'
 import type { AppProps } from 'next/app'
 import { GlobalStyles } from 'styles'
 import { mantine } from 'theme'
+import React from 'react'
 
-function MyApp({ Component, pageProps }: AppProps) {
+const createMyEmotionCache = () => {
+  const insertionPoint = typeof document !== 'undefined'
+    ? (document.querySelector('meta[name="emotion-insertion-point"]')! as HTMLElement)
+    : undefined
+
+  const cache = createCache({
+    key: 'uthreeu',
+    insertionPoint
+  })
+  cache.compat = true;
+
+  return cache;
+}
+
+const cache = createMyEmotionCache()
+
+const wrapOnClient = (children: React.ReactNode) => {
+  if (typeof document === 'undefined') {
+    return children;
+  }
   return (
     <MantineProvider {...mantine}>
       <CacheProvider value={cache}>
-        <GlobalStyles />
-        <Component {...pageProps} />
+        {children}
       </CacheProvider>
     </MantineProvider>
+  );
+};
+
+function MyApp({ Component, pageProps }: AppProps) {
+  return wrapOnClient(
+    <>
+      <GlobalStyles />
+      <Component {...pageProps} />
+    </>
   )
 }
 
diff --git a/pages/_document.tsx b/pages/_document.tsx
index 424a765..de94e2f 100644
--- a/pages/_document.tsx
+++ b/pages/_document.tsx
@@ -1,4 +1,6 @@
-import { cache } from '@emotion/css'
+import { CacheProvider } from '@emotion/react'
+import { MantineProvider } from '@mantine/core'
+import createCache from '@emotion/cache'
 import createEmotionServer from '@emotion/server/create-instance'
 import { ServerStyles, createStylesServer } from '@mantine/next'
 import Document, {
@@ -8,13 +10,15 @@ import Document, {
   NextScript,
   DocumentContext,
 } from 'next/document'
+import { mantine } from 'theme'
 
-const stylesServer = createStylesServer()
-
+const stylesServer = createStylesServer(mantine.emotionOptions)
 export function MyDocument() {
   return (
     <Html>
-      <Head />
+      <Head>
+        <meta name="emotion-insertion-point" content=""></meta>
+      </Head>
       <body>
         <Main />
         <NextScript />
@@ -23,16 +27,46 @@ export function MyDocument() {
   )
 }
 
+const createMyEmotionCache = () => {
+  const insertionPoint = typeof document !== 'undefined'
+    ? (document.querySelector('meta[name="emotion-insertion-point"]')! as HTMLElement)
+    : undefined
+
+  const cache = createCache({
+    key: 'uthreeu',
+    insertionPoint
+  })
+  cache.compat = true;
+
+  return cache;
+}
+
 MyDocument.getInitialProps = async (ctx: DocumentContext) => {
+  const cache = createMyEmotionCache()
+  const originalRenderPage = ctx.renderPage
+
+  ctx.renderPage = () =>
+    originalRenderPage({
+      // eslint-disable-next-line react/display-name
+      enhanceApp: (App) => (props) =>
+        (
+          <MantineProvider {...mantine}>
+            <CacheProvider value={cache}>
+              <App {...props} />
+            </CacheProvider>
+          </MantineProvider>
+        ),
+    });
   const initialProps = await Document.getInitialProps(ctx)
+
   const server = createEmotionServer(cache)
   return {
     ...initialProps,
     styles: (
       <>
         {initialProps.styles}
-        <ServerStyles html={initialProps.html} server={stylesServer} />
         <ServerStyles html={initialProps.html} server={server} />
+        <ServerStyles html={initialProps.html} server={stylesServer} />
       </>
     ),
   }
diff --git a/theme/mantine.ts b/theme/mantine.ts
index 1ef6ce0..79fbde4 100644
--- a/theme/mantine.ts
+++ b/theme/mantine.ts
@@ -24,3 +24,8 @@ export const styles: MantineProviderProps['styles'] = {
     filled: tw`bg-primary-500 hocus:(bg-primary-400) active:(bg-primary-600)`,
   } as Record<ButtonStylesNames, CSSObject>,
 }
+
+export const emotionOptions = {
+  key: 'mantine',
+  prepend: false,
+}

0reactions

u3ucommented, Jul 10, 2022

This is automatically set to true by createEmotionServer. It makes our APIs not to render styles “inline” during SSR - they are just put into the cache as it’s expected that they will be extracted using APIs like extractCritical etc. It also turns off the infamous “unsafe pseudo-selectors” warnings.

With your latest patch - is it already working as you want? Or do you need further assistance?

@Andarist Thank you! This problem has been solved 😁

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