class Sprockets::Rails::SourcemappingUrlProcessor

Rewrites source mapping urls with the digested paths and protect against semicolon appending with a dummy comment line

def self.call(input) 

def self.call(input)
  env     = input[:environment]
  context = env.context_class.new(input)
  data    = input[:data].gsub(REGEX) do |_match|
    ensure_file_is_present = context.resolve($1)
    "//# sourceMappingURL=#{context.asset_path($1)}\n//!\n"
  rescue Sprockets::FileNotFound
    env.logger.warn "Removed sourceMappingURL comment for missing asset '#{$1}' from #{input[:filename]}"
    nil
  end
  { data: data }
end