class Haml::TempleEngine

and let Tilt have a native support of Haml 6. At least it generates warnings now.
For backward compatibility of Tilt integration. TODO: We should deprecate this

def compile(template)

def compile(template)
  @precompiled = call(template)
end

def precompiled_with_ambles(_local_names, after_preamble:)

def precompiled_with_ambles(_local_names, after_preamble:)
  "#{after_preamble.tr("\n", ';')}#{@precompiled}".dup
end