fix: fix an issue where non instantly initialised instances would error when exiting the effect

Author: robcalcroft

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-use-infinite-loader",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "Infinitely load new content in React using a simple React hook",
   "main": "useInfiniteLoader.es5.js",
   "repository": "git@github.com:CurationCorp/react-use-infinite-loader.git",

useInfiniteLoader.es5.js

@@ -71,8 +71,10 @@ function useInfiniteLoader(_ref) {
     }
 
     return function () {
-      observer.current.disconnect();
-      observer.current = undefined;
+      if (observer && observer.current) {
+        observer.current.disconnect();
+        observer.current = undefined;
+      }
     };
   }, [hasMore, loadMore, page, initialise]);
 

useInfiniteLoader.js

@@ -36,8 +36,10 @@ export default function useInfiniteLoader({
       }
     }
     return () => {
-      observer.current.disconnect();
-      observer.current = undefined;
+      if (observer && observer.current) {
+        observer.current.disconnect();
+        observer.current = undefined;
+      }
     };
   }, [hasMore, loadMore, page, initialise]);
   return { loaderRef, page: page.current };