fix: Null-value pattern bug #46

Author: ljacobsson

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@mhlabs/evb-cli",
-  "version": "1.1.39",
+  "version": "1.1.40",
   "description": "A package for building EventBridge/CloudWatch Events patterns",
   "main": "index.js",
   "scripts": {

src/commands/local/listeners/localPatternListener.js

@@ -21,9 +21,9 @@ const intrinsicFunctions = [
   "Ref",
 ];
 let output = console;
-function findAllKeys(obj, keyArray) {
-  keyArray.push(...Object.keys(obj));
-  for (const prop of Object.keys(obj)) {
+function findAllKeys(obj, keyArray) {  
+  keyArray.push(...Object.keys(obj || {}));
+  for (const prop of Object.keys(obj || {})) {
     if (
       !obj[prop] ||
       typeof obj[prop] !== "object" ||