Add missing component

src/ErrorBoundary.jsx

@@ -0,0 +1,27 @@
+import React from 'react';
+
+export default class ErrorBoundary extends React.Component {
+  constructor(props) {
+    super(props);
+    this.state = { hasError: false };
+  }
+
+  static getDerivedStateFromError(error) {
+    // Update state so the next render will show the fallback UI.
+    return { hasError: true };
+  }
+
+  componentDidCatch(error, errorInfo) {
+    // eslint-disable-next-line
+    console.error(error, errorInfo);
+  }
+
+  render() {
+    if (this.state.hasError) {
+      // You can render any custom fallback UI
+      return <strong>Error in component</strong>;
+    }
+
+    return this.props.children;
+  }
+}