fixing pretty print issue. AND making it so it only looks for object's own properties when doing getAt

src/runtime-js.ts

@@ -112,6 +112,7 @@ export const _rt = {
         let obj: any = store[path[0]];
         for (let i = 1; i < path.length; i++) {
             if (obj === undefined || obj === null) return { _tag: 'None' };
+            if (!Object.prototype.hasOwnProperty.call(obj, path[i])) return { _tag: 'None' };
             obj = obj[path[i]];
         }
         return obj === undefined ? { _tag: 'None' } : { _tag: 'Some', _0: obj };