class Litequeue

def initialize
  configuration = self.class.configuration
  file = configuration.path
  options = configuration.to_h
    .slice(:synchronous, :mmap_size, :journal_size_limit)
    .merge(migrations: self.class.migrations,
      statements: self.class.statements)
  @db = Litedb::Connection.new(file, options)
  # Once the instance has been initialized, don't allow the configuration to be changed
  # as it won't have any effect.
  configuration.freeze
end