Index: emotion-server.d.ts
===================================================================
--- emotion-server.d.ts	(revision 40ac7a920a0b08c324bf4201b03a36483cc3aad4)
+++ emotion-server.d.ts	(revision 40ac7a920a0b08c324bf4201b03a36483cc3aad4)
@@ -0,0 +1,10 @@
+declare module '@emotion/server/create-instance' {
+    import { EmotionCache } from '@emotion/cache';
+
+    export interface EmotionServer {
+        extractCriticalToChunks: (html: string) => { styles: any[]; html: string };
+        constructStyleTagsFromChunks: (chunks: any) => string;
+    }
+
+    export default function createEmotionServer(cache: EmotionCache): EmotionServer;
+}