[styled-engine] Create cache only if document is available (#36001)

mui · Feb 6, 2023 · 684cd85 · 684cd85
1 parent 435680d
commit 684cd85
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/packages/mui-styled-engine/src/StyledEngineProvider/StyledEngineProvider.js b/packages/mui-styled-engine/src/StyledEngineProvider/StyledEngineProvider.js
@@ -5,7 +5,10 @@ import createCache from '@emotion/cache';
 
 // prepend: true moves MUI styles to the top of the <head> so they're loaded first.
 // It allows developers to easily override MUI styles with other styling solutions, like CSS modules.
-const cache = createCache({ key: 'css', prepend: true });
+let cache;
+if (typeof document === 'object') {
+  cache = createCache({ key: 'css', prepend: true });
+}
 
 export default function StyledEngineProvider(props) {
   const { injectFirst, children } = props;