re-structure to monorepo.

packages/webapp/src/components/ErrorBoundary/index.tsx

@@ -0,0 +1,35 @@
+// @ts-nocheck
+import React from 'react';
+import PropTypes from 'prop-types';
+
+function ErrorBoundary({
+  error,
+  errorInfo,
+  children
+}) {
+
+  if (errorInfo) {
+    return (
+      <div>
+        <h2>Something went wrong.</h2>
+
+        <details style={{ whiteSpace: 'pre-wrap' }}>
+          {error && error.toString()}
+          <br />
+          {errorInfo.componentStack}
+        </details>
+      </div>
+    );
+  }
+  return children;
+}
+
+ErrorBoundary.defaultProps = {
+  children: null,
+};
+
+ErrorBoundary.propTypes = {
+  children: PropTypes.node,
+};
+
+export default ErrorBoundary;