diff --git a/.gitignore b/.gitignore
index 5039d8b..17657ea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@ node_modules
 lib
 dist
 build
+.idea
diff --git a/src/index.tsx b/src/index.tsx
index 244bc38..d3b6552 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -14,6 +14,7 @@ declare global {
 
 export type ContextProps = {
   options?: {};
+  children?: React.ReactNode;
 };
 
 const MathJaxContext = createContext({});
@@ -22,7 +23,7 @@ export const MathJaxProvider: React.FC<ContextProps> = ({
   children = null,
 }) => {
   const ref = useRef<HTMLElement | null>(null);
-  const [mathJax, setMathJax] = useState(window.MathJax || options);
+  const [mathJax, setMathJax] = useState(typeof window !== 'undefined' ? window.MathJax : options);
 
   useEffect(() => {
     const existingScript = document.getElementById("mathjax-script");