diff --git a/Makefile b/Makefile
index 642130d..a733c6d 100644
--- a/Makefile
+++ b/Makefile
@@ -106,6 +106,7 @@ SRCS = \
 	src/minitscript/minitscript/NetworkMethods.cpp \
 	src/minitscript/minitscript/ScriptMethods.cpp \
 	src/minitscript/minitscript/SetMethods.cpp \
+	src/minitscript/minitscript/Setup.cpp \
 	src/minitscript/minitscript/StringMethods.cpp \
 	src/minitscript/minitscript/TimeMethods.cpp \
 	src/minitscript/minitscript/Transpiler.cpp \
diff --git a/Makefile.nmake b/Makefile.nmake
index 8392f07..87b3e8e 100644
--- a/Makefile.nmake
+++ b/Makefile.nmake
@@ -49,6 +49,7 @@ SRCS = \
 	src/minitscript/minitscript/NetworkMethods.cpp \
 	src/minitscript/minitscript/ScriptMethods.cpp \
 	src/minitscript/minitscript/SetMethods.cpp \
+	src/minitscript/minitscript/Setup.cpp \
 	src/minitscript/minitscript/StringMethods.cpp \
 	src/minitscript/minitscript/TimeMethods.cpp \
 	src/minitscript/minitscript/Transpiler.cpp \
diff --git a/src/minitscript/minitscript/MinitScript.cpp b/src/minitscript/minitscript/MinitScript.cpp
index 8d3725d..0942650 100644
--- a/src/minitscript/minitscript/MinitScript.cpp
+++ b/src/minitscript/minitscript/MinitScript.cpp
@@ -34,6 +34,7 @@
 #include <minitscript/minitscript/MathMethods.h>
 #include <minitscript/minitscript/NetworkMethods.h>
 #include <minitscript/minitscript/ScriptMethods.h>
+#include <minitscript/minitscript/Setup.h>
 #include <minitscript/minitscript/SetMethods.h>
 #include <minitscript/minitscript/StringMethods.h>
 #include <minitscript/minitscript/TimeMethods.h>
@@ -89,6 +90,7 @@ using minitscript::minitscript::MapMethods;
 using minitscript::minitscript::MathMethods;
 using minitscript::minitscript::NetworkMethods;
 using minitscript::minitscript::ScriptMethods;
+using minitscript::minitscript::Setup;
 using minitscript::minitscript::SetMethods;
 using minitscript::minitscript::StringMethods;
 using minitscript::minitscript::TimeMethods;
@@ -960,192 +962,6 @@ int MinitScript::getStackletScopeScriptIdx(int scriptIdx) {
 	return MinitScript::SCRIPTIDX_NONE;
 }
 
-
-bool MinitScript::setupFunctionAndStackletScriptIndices(int scriptIdx) {
-	//
-	auto& script = scripts[scriptIdx];
-	auto statementIdx = STATEMENTIDX_FIRST;
-	//
-	for (auto& syntaxTreeNode: script.syntaxTree) {
-		auto& statement = script.statements[statementIdx++];
-		//
-		if (setupFunctionAndStackletScriptIndices(syntaxTreeNode, statement) == false) {
-			//
-			return false;
-		}
-	}
-	//
-	return true;
-
-}
-
-bool MinitScript::setupFunctionAndStackletScriptIndices(SyntaxTreeNode& syntaxTreeNode, const Statement& statement) {
-	switch (syntaxTreeNode.type) {
-		case SyntaxTreeNode::SCRIPTSYNTAXTREENODE_LITERAL:
-			{
-				switch(syntaxTreeNode.value.getType()) {
-					case(MinitScript::TYPE_ARRAY):
-					case(MinitScript::TYPE_MAP):
-						{
-							if (setupFunctionAndStackletScriptIndices(syntaxTreeNode.value, statement, syntaxTreeNode.subLineIdx) == false) return false;
-							//
-							break;
-						}
-					case(MinitScript::TYPE_FUNCTION_ASSIGNMENT):
-						{
-							string function;
-							auto functionScriptIdx = SCRIPTIDX_NONE;
-							if (syntaxTreeNode.value.getFunctionValue(function, functionScriptIdx) == false ||
-								(functionScriptIdx = getFunctionScriptIdx(function)) == SCRIPTIDX_NONE) {
-								//
-								_Console::printLine(
-									getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
-									": Function not found: " +
-									syntaxTreeNode.value.getValueAsString()
-								);
-								//
-								parseErrors.push_back(
-									getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
-									": Function not found: " +
-									syntaxTreeNode.value.getValueAsString()
-								);
-								//
-								return false;
-							}
-							//
-							syntaxTreeNode.value.setFunctionAssignment(function, functionScriptIdx);
-							//
-							break;
-						}
-					case(MinitScript::TYPE_STACKLET_ASSIGNMENT):
-						{
-							string stacklet;
-							auto stackletScriptIdx = SCRIPTIDX_NONE;
-							if (syntaxTreeNode.value.getStackletValue(stacklet, stackletScriptIdx) == false ||
-								(stackletScriptIdx = getFunctionScriptIdx(stacklet)) == SCRIPTIDX_NONE) {
-								//
-								_Console::printLine(
-									getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
-									": Stacklet not found" +
-									syntaxTreeNode.value.getValueAsString()
-								);
-								//
-								parseErrors.push_back(
-									getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
-									": Stacklet not found: " +
-									syntaxTreeNode.value.getValueAsString()
-								);
-								//
-								return false;
-							}
-							//
-							syntaxTreeNode.value.setStackletAssignment(stacklet, stackletScriptIdx);
-							//
-							break;
-						}
-					default:
-						break;
-				}
-				//
-				break;
-			}
-		case SyntaxTreeNode::SCRIPTSYNTAXTREENODE_EXECUTE_METHOD:
-		case SyntaxTreeNode::SCRIPTSYNTAXTREENODE_EXECUTE_FUNCTION:
-			{
-				for (auto& argument: syntaxTreeNode.arguments) {
-					if (setupFunctionAndStackletScriptIndices(argument, statement) == false) return false;
-				}
-				//
-				break;
-			}
-		default:
-			break;
-	}
-	//
-	return true;
-}
-
-bool MinitScript::setupFunctionAndStackletScriptIndices(Variable& variable, const Statement& statement, int subLineIdx) {
-	switch (variable.getType()) {
-		case TYPE_ARRAY:
-			{
-				auto arrayPointer = variable.getArrayPointer();
-				if (arrayPointer == nullptr) break;
-				for (auto arrayEntry: *arrayPointer) {
-					if (setupFunctionAndStackletScriptIndices(*arrayEntry, statement, subLineIdx) == false) return false;
-				}
-				//
-				break;
-			}
-		case TYPE_MAP:
-			{
-				//
-				auto mapPointer = variable.getMapPointer();
-				if (mapPointer == nullptr) break;
-				for (auto& [mapKey, mapValue]: *mapPointer) {
-					if (setupFunctionAndStackletScriptIndices(*mapValue, statement, subLineIdx) == false) return false;
-				}
-				//
-				break;
-			}
-		case TYPE_FUNCTION_ASSIGNMENT:
-			{
-				string function;
-				auto functionScriptIdx = SCRIPTIDX_NONE;
-				if (variable.getFunctionValue(function, functionScriptIdx) == false ||
-					(functionScriptIdx = getFunctionScriptIdx(function)) == SCRIPTIDX_NONE) {
-					//
-					_Console::printLine(
-						getStatementInformation(statement, subLineIdx) +
-						": Function not found: " +
-						variable.getValueAsString()
-					);
-					//
-					parseErrors.push_back(
-						getStatementInformation(statement, subLineIdx) +
-						": Function not found: " +
-						variable.getValueAsString()
-					);
-					//
-					return false;
-				}
-				//
-				variable.setFunctionAssignment(function, functionScriptIdx);
-				//
-				break;
-			}
-		case TYPE_STACKLET_ASSIGNMENT:
-			{
-				string stacklet;
-				auto stackletScriptIdx = SCRIPTIDX_NONE;
-				if (variable.getStackletValue(stacklet, stackletScriptIdx) == false ||
-					(stackletScriptIdx = getFunctionScriptIdx(stacklet)) == SCRIPTIDX_NONE) {
-					//
-					_Console::printLine(
-						getStatementInformation(statement, subLineIdx) +
-						": Stacklet not found" +
-						variable.getValueAsString()
-					);
-					//
-					parseErrors.push_back(
-						getStatementInformation(statement, subLineIdx) +
-						": Stacklet not found: " +
-						variable.getValueAsString()
-					);
-					//
-					return false;
-				}
-				//
-				variable.setStackletAssignment(stacklet, stackletScriptIdx);
-				//
-				break;
-			}
-		default: break;
-	}
-	//
-	return true;
-}
-
 void MinitScript::emit(const string& condition) {
 	// defer emit if a function/stacklet is still running
 	if (isFunctionRunning() == true) {
@@ -2578,7 +2394,7 @@ void MinitScript::parseScript(const string& pathName, const string& fileName, bo
 	// set up stacklet and function indices
 	for (auto scriptIdx = 0; scriptIdx < scripts.size(); scriptIdx++) {
 		//
-		if (setupFunctionAndStackletScriptIndices(scriptIdx) == false) {
+		if (Setup::setupFunctionAndStackletScriptIndices(this, scriptIdx, parseErrors) == false) {
 			scriptValid = false;
 			return;
 		}
diff --git a/src/minitscript/minitscript/MinitScript.h b/src/minitscript/minitscript/MinitScript.h
index 011cb9d..d440cf2 100644
--- a/src/minitscript/minitscript/MinitScript.h
+++ b/src/minitscript/minitscript/MinitScript.h
@@ -72,6 +72,7 @@ class minitscript::minitscript::MinitScript {
 	friend class JSONMethods;
 	friend class MathMethods;
 	friend class ScriptMethods;
+	friend class Setup;
 	friend class Transpiler;
 	friend class Validations;
 
@@ -3861,28 +3862,6 @@ class minitscript::minitscript::MinitScript {
 	 */
 	int getStackletScopeScriptIdx(int scriptIdx);
 
-	/**
-	 * Setup function and stacket script indices
-	 * @param scriptIdx script index
-	 */
-	bool setupFunctionAndStackletScriptIndices(int scriptIdx);
-
-	/**
-	 * Setup function and stacket script indices
-	 * @param syntaxTreeNode syntax tree node
-	 * @param statement statement
-	 */
-	bool setupFunctionAndStackletScriptIndices(SyntaxTreeNode& syntaxTreeNode, const Statement& statement);
-
-	/**
-	  * Setup function and stacket script indices
-	  * @param variable variable
-	  * @param statement statement
-	  * @param subLineIdx sub line index
-	  * @return success
-	  */
-	bool setupFunctionAndStackletScriptIndices(Variable& variable, const Statement& statement, int subLineIdx);
-
 	/**
 	 * Returns if char is operator char
 	 * @param c char to test
diff --git a/src/minitscript/minitscript/Setup.cpp b/src/minitscript/minitscript/Setup.cpp
new file mode 100644
index 0000000..467c8c1
--- /dev/null
+++ b/src/minitscript/minitscript/Setup.cpp
@@ -0,0 +1,198 @@
+#include <string>
+#include <vector>
+
+#include <minitscript/minitscript.h>
+#include <minitscript/minitscript/MinitScript.h>
+#include <minitscript/minitscript/Setup.h>
+
+using std::string;
+using std::vector;
+
+using minitscript::minitscript::MinitScript;
+using minitscript::minitscript::Setup;
+
+bool Setup::setupFunctionAndStackletScriptIndices(MinitScript* minitScript, int scriptIdx, vector<string>& parseErrors) {
+	//
+	auto& scripts = minitScript->scripts;
+	auto& script = scripts[scriptIdx];
+	auto statementIdx = MinitScript::STATEMENTIDX_FIRST;
+	//
+	for (auto& syntaxTreeNode: script.syntaxTree) {
+		auto& statement = script.statements[statementIdx++];
+		//
+		if (setupFunctionAndStackletScriptIndices(minitScript, syntaxTreeNode, statement, parseErrors) == false) {
+			//
+			return false;
+		}
+	}
+	//
+	return true;
+
+}
+
+bool Setup::setupFunctionAndStackletScriptIndices(MinitScript* minitScript, MinitScript::SyntaxTreeNode& syntaxTreeNode, const MinitScript::Statement& statement, vector<string>& parseErrors) {
+	switch (syntaxTreeNode.type) {
+		case MinitScript::SyntaxTreeNode::SCRIPTSYNTAXTREENODE_LITERAL:
+			{
+				switch(syntaxTreeNode.value.getType()) {
+					case(MinitScript::TYPE_ARRAY):
+					case(MinitScript::TYPE_MAP):
+						{
+							if (setupFunctionAndStackletScriptIndices(minitScript, syntaxTreeNode.value, statement, syntaxTreeNode.subLineIdx, parseErrors) == false) return false;
+							//
+							break;
+						}
+					case(MinitScript::TYPE_FUNCTION_ASSIGNMENT):
+						{
+							string function;
+							auto functionScriptIdx = MinitScript::SCRIPTIDX_NONE;
+							if (syntaxTreeNode.value.getFunctionValue(function, functionScriptIdx) == false ||
+								(functionScriptIdx = minitScript->getFunctionScriptIdx(function)) == MinitScript::SCRIPTIDX_NONE) {
+								//
+								_Console::printLine(
+									minitScript->getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
+									": Function not found: " +
+									syntaxTreeNode.value.getValueAsString()
+								);
+								//
+								parseErrors.push_back(
+									minitScript->getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
+									": Function not found: " +
+									syntaxTreeNode.value.getValueAsString()
+								);
+								//
+								return false;
+							}
+							//
+							syntaxTreeNode.value.setFunctionAssignment(function, functionScriptIdx);
+							//
+							break;
+						}
+					case(MinitScript::TYPE_STACKLET_ASSIGNMENT):
+						{
+							string stacklet;
+							auto stackletScriptIdx = MinitScript::SCRIPTIDX_NONE;
+							if (syntaxTreeNode.value.getStackletValue(stacklet, stackletScriptIdx) == false ||
+								(stackletScriptIdx = minitScript->getFunctionScriptIdx(stacklet)) == MinitScript::SCRIPTIDX_NONE) {
+								//
+								_Console::printLine(
+									minitScript->getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
+									": Stacklet not found" +
+									syntaxTreeNode.value.getValueAsString()
+								);
+								//
+								parseErrors.push_back(
+									minitScript->getStatementInformation(statement, syntaxTreeNode.subLineIdx) +
+									": Stacklet not found: " +
+									syntaxTreeNode.value.getValueAsString()
+								);
+								//
+								return false;
+							}
+							//
+							syntaxTreeNode.value.setStackletAssignment(stacklet, stackletScriptIdx);
+							//
+							break;
+						}
+					default:
+						break;
+				}
+				//
+				break;
+			}
+		case MinitScript::SyntaxTreeNode::SCRIPTSYNTAXTREENODE_EXECUTE_METHOD:
+		case MinitScript::SyntaxTreeNode::SCRIPTSYNTAXTREENODE_EXECUTE_FUNCTION:
+			{
+				for (auto& argument: syntaxTreeNode.arguments) {
+					if (setupFunctionAndStackletScriptIndices(minitScript, argument, statement, parseErrors) == false) return false;
+				}
+				//
+				break;
+			}
+		default:
+			break;
+	}
+	//
+	return true;
+}
+
+bool Setup::setupFunctionAndStackletScriptIndices(MinitScript* minitScript, MinitScript::Variable& variable, const MinitScript::Statement& statement, int subLineIdx, vector<string>& parseErrors) {
+	switch (variable.getType()) {
+		case MinitScript::TYPE_ARRAY:
+			{
+				auto arrayPointer = variable.getArrayPointer();
+				if (arrayPointer == nullptr) break;
+				for (auto arrayEntry: *arrayPointer) {
+					if (setupFunctionAndStackletScriptIndices(minitScript, *arrayEntry, statement, subLineIdx, parseErrors) == false) return false;
+				}
+				//
+				break;
+			}
+		case MinitScript::TYPE_MAP:
+			{
+				//
+				auto mapPointer = variable.getMapPointer();
+				if (mapPointer == nullptr) break;
+				for (auto& [mapKey, mapValue]: *mapPointer) {
+					if (setupFunctionAndStackletScriptIndices(minitScript, *mapValue, statement, subLineIdx, parseErrors) == false) return false;
+				}
+				//
+				break;
+			}
+		case MinitScript::TYPE_FUNCTION_ASSIGNMENT:
+			{
+				string function;
+				auto functionScriptIdx = MinitScript::SCRIPTIDX_NONE;
+				if (variable.getFunctionValue(function, functionScriptIdx) == false ||
+					(functionScriptIdx = minitScript->getFunctionScriptIdx(function)) == MinitScript::SCRIPTIDX_NONE) {
+					//
+					_Console::printLine(
+						minitScript->getStatementInformation(statement, subLineIdx) +
+						": Function not found: " +
+						variable.getValueAsString()
+					);
+					//
+					parseErrors.push_back(
+						minitScript->getStatementInformation(statement, subLineIdx) +
+						": Function not found: " +
+						variable.getValueAsString()
+					);
+					//
+					return false;
+				}
+				//
+				variable.setFunctionAssignment(function, functionScriptIdx);
+				//
+				break;
+			}
+		case MinitScript::TYPE_STACKLET_ASSIGNMENT:
+			{
+				string stacklet;
+				auto stackletScriptIdx = MinitScript::SCRIPTIDX_NONE;
+				if (variable.getStackletValue(stacklet, stackletScriptIdx) == false ||
+					(stackletScriptIdx = minitScript->getFunctionScriptIdx(stacklet)) == MinitScript::SCRIPTIDX_NONE) {
+					//
+					_Console::printLine(
+						minitScript->getStatementInformation(statement, subLineIdx) +
+						": Stacklet not found" +
+						variable.getValueAsString()
+					);
+					//
+					parseErrors.push_back(
+						minitScript->getStatementInformation(statement, subLineIdx) +
+						": Stacklet not found: " +
+						variable.getValueAsString()
+					);
+					//
+					return false;
+				}
+				//
+				variable.setStackletAssignment(stacklet, stackletScriptIdx);
+				//
+				break;
+			}
+		default: break;
+	}
+	//
+	return true;
+}
diff --git a/src/minitscript/minitscript/Setup.h b/src/minitscript/minitscript/Setup.h
new file mode 100644
index 0000000..13eefd1
--- /dev/null
+++ b/src/minitscript/minitscript/Setup.h
@@ -0,0 +1,48 @@
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <minitscript/minitscript.h>
+#include <minitscript/minitscript/MinitScript.h>
+
+using minitscript::minitscript::MinitScript;
+
+using std::string;
+using std::vector;
+
+/**
+ * MinitScript setup methods
+ * @author Andreas Drewke
+ */
+class minitscript::minitscript::Setup {
+public:
+	/**
+	 * Setup function and stacket script indices
+	 * @param minitScript MinitScript instance
+	 * @param scriptIdx script index
+	 * @param parseErrors parse errors
+	 */
+	static bool setupFunctionAndStackletScriptIndices(MinitScript* minitScript, int scriptIdx, vector<string>& parseErrors);
+
+	/**
+	 * Setup function and stacket script indices
+	 * @param minitScript MinitScript instance
+	 * @param syntaxTreeNode syntax tree node
+	 * @param statement statement
+	 * @param parseErrors parse errors
+	 */
+	static bool setupFunctionAndStackletScriptIndices(MinitScript* minitScript, MinitScript::SyntaxTreeNode& syntaxTreeNode, const MinitScript::Statement& statement, vector<string>& parseErrors);
+
+	/**
+	  * Setup function and stacket script indices
+	  * @param minitScript MinitScript instance
+	  * @param variable variable
+	  * @param statement statement
+	  * @param subLineIdx sub line index
+	 * @param parseErrors parse errors
+	  * @return success
+	  */
+	static bool setupFunctionAndStackletScriptIndices(MinitScript* minitScript, MinitScript::Variable& variable, const MinitScript::Statement& statement, int subLineIdx, vector<string>& parseErrors);
+
+};
diff --git a/src/minitscript/minitscript/fwd-minitscript.h b/src/minitscript/minitscript/fwd-minitscript.h
index 6f9c403..d1312cc 100644
--- a/src/minitscript/minitscript/fwd-minitscript.h
+++ b/src/minitscript/minitscript/fwd-minitscript.h
@@ -24,6 +24,7 @@ namespace minitscript {
 	class MinitScript;
 	class ScriptMethods;
 	class SetMethods;
+	class Setup;
 	class StringMethods;
 	class TimeMethods;
 	class Transpiler;