Implement Reflect built-in object

boa/src/builtins/function/mod.rs

@@ -308,9 +308,10 @@ impl BuiltInFunctionObject {
             // TODO?: 3.a. PrepareForTailCall
             return context.call(this, &this_arg, &[]);
         }
-        let arg_list = context
-            .extract_array_properties(&arg_array)?
-            .map_err(|()| arg_array)?;
+        let arg_array = arg_array.as_object().ok_or_else(|| {
+            context.construct_type_error("argList must be null, undefined or an object")
+        })?;
+        let arg_list = arg_array.create_list_from_array_like(&[], context)?;
         // TODO?: 5. PrepareForTailCall
         context.call(this, &this_arg, &arg_list)
     }

boa/src/builtins/mod.rs

@@ -17,6 +17,7 @@ pub mod math;
 pub mod nan;
 pub mod number;
 pub mod object;
+pub mod reflect;
 pub mod regexp;
 pub mod string;
 pub mod symbol;
@@ -39,6 +40,7 @@ pub(crate) use self::{
     number::Number,
     object::for_in_iterator::ForInIterator,
     object::Object as BuiltInObjectObject,
+    reflect::Reflect,
     regexp::RegExp,
     string::String,
     symbol::Symbol,
@@ -86,6 +88,7 @@ pub fn init(context: &mut Context) {
         SyntaxError::init,
         EvalError::init,
         UriError::init,
+        Reflect::init,
         #[cfg(feature = "console")]
         console::Console::init,
     ];