LibJS: Allow functions to take arguments (#1405)

Author: https://github.com/f-eiwu
Commit: 01133733dd
Pull-request: https://github.com/SerenityOS/serenity/pull/1405
Reviewed-by: https://github.com/awesomekling ✅

Libraries/LibJS/Function.cpp

@@ -29,9 +29,10 @@
 
 namespace JS {
 
-Function::Function(String name, const ScopeNode& body)
+Function::Function(String name, const ScopeNode& body, Vector<String> parameters)
     : m_name(move(name))
     , m_body(body)
+    , m_parameters(move(parameters))
 {
 }