wat2wasm doesn't support wasm GC?

code example:

;; wat2wasm --enable-gc ./test.wat
(module
    (type $i32_arr (array (mut i32)) )

    (func $createArray (param $len i32) (result i32) 
        (array.new
            $i32_arr
            (i32.const 42)      ;; initial value 
            (local.get $len)   ;; array len
        )
        (array.get
            $i32_arr
            (i32.const 0)   ;; element idx
        )
    )

    (export "createArray" (func $createArray) )
)

error msg:

./test.wat:6:10: error: unexpected token "array.new", expected an instr.
        (array.new

wat2wasm doesn't support array instr?

Start by reproducing the provided test.wat example with wat2wasm --enable-gc and trace how wat2wasm parses instructions. The payload names no source files or tests, so locate the parser and existing GC support before assessing the change. Done means the example accepts array.new and array.get without the reported unexpected-token error.