Refactor to improve bundle size

Author: wooorm

index.js

@@ -3,13 +3,14 @@
 module.exports = generated
 
 function generated(node) {
-  var position = optional(optional(node).position)
-  var start = optional(position.start)
-  var end = optional(position.end)
-
-  return !start.line || !start.column || !end.line || !end.column
-}
-
-function optional(value) {
-  return value && typeof value === 'object' ? value : {}
+  return (
+    !node ||
+    !node.position ||
+    !node.position.start ||
+    !node.position.start.line ||
+    !node.position.start.column ||
+    !node.position.end ||
+    !node.position.end.line ||
+    !node.position.end.column
+  )
 }