def u32(<<0::1, _::bitstring>> = binary) do

  def u32(binary) do
    u32(binary, [])
  end
  defp u32(<<0::1, _::bitstring>> = binary, acc) do

    val = WaParser.LEB128.decode_unsigned(v)

    val = [v | acc] |> Enum.reverse() |> Enum.into(<<>>)
    val = WaParser.LEB128.decode_unsigned(val)

  defp u32(<<1::1, _::bitstring>> = binary, acc) do
    <<v::binary-size(1), rest::binary>> = binary
    u32(rest, [v | acc])
  end