clone method
Creates a clone of this environment
Implementation
Environment clone({LuaRuntime? interpreter}) {
final cloned = Environment(
parent: parent,
interpreter: interpreter ?? this.interpreter,
);
// Copy all values
for (final entry in values.entries) {
cloned.values[entry.key] = entry.value;
}
// Copy to-be-closed variables
cloned.toBeClosedVars.addAll(toBeClosedVars);
cloned._updateCredits();
return cloned;
}