Check for SSR failure

src/components/Carousel/helpers.js

@@ -28,7 +28,9 @@ export function getSwipeDirection(x1, x2, y1, y2) {
 }
 
 export function isTouchDevice() {
-  return 'ontouchstart' in document.documentElement
+  if (typeof document !== 'undefined') {
+    return 'ontouchstart' in document.documentElement
+  }
 }
 
 export function sortNumber(a, b) {
@@ -36,9 +38,11 @@ export function sortNumber(a, b) {
 }
 
 export function getScreenWidth() {
-  return (
-    window.innerWidth ||
-    document.documentElement.clientWidth ||
-    document.body.clientWidth
-  )
+  if (typeof document !== 'undefined') {
+    return (
+      window.innerWidth ||
+      document.documentElement.clientWidth ||
+      document.body.clientWidth
+    )
+  }
 }