Correct some empty object checks

Author: TotalTechGeek

defaultMethods.js

@@ -19,7 +19,7 @@ function isDeterministic (method, engine, buildState) {
     const func = Object.keys(method)[0]
     const lower = method[func]
 
-    if (engine.isData(method, func)) return true
+    if (engine.isData(method, func) || func === undefined) return true
     if (!engine.methods[func]) throw new Error(`Method '${func}' was not found in the Logic Engine.`)
 
     if (engine.methods[func].lazy) {
@@ -44,7 +44,7 @@ function isSyncDeep (method, engine, buildState) {
   if (method && typeof method === 'object') {
     const func = Object.keys(method)[0]
     const lower = method[func]
-    if (engine.isData(method, func)) return true
+    if (engine.isData(method, func) || func === undefined) return true
     if (!engine.methods[func]) throw new Error(`Method '${func}' was not found in the Logic Engine.`)
     if (engine.methods[func].lazy) return typeof engine.methods[func][Sync] === 'function' ? engine.methods[func][Sync](lower, buildState) : engine.methods[func][Sync]
     return typeof engine.methods[func][Sync] === 'function' ? engine.methods[func][Sync](lower, buildState) : engine.methods[func][Sync] && isSyncDeep(lower, engine, buildState)