module Sprockets::Configuration

def config=(config) 

def config=(config)
  raise TypeError, "can't assign mutable config" unless config.frozen?
  @config = config
end

def digest_class

Defaults to `Digest::SHA256`.

Public: Returns a `Digest` implementation class. 
def digest_class
  config[:digest_class]
end

def digest_class=(klass)


environment.digest_class = Digest::MD5

`Digest::MD5`.
`Digest::` implementation such as `Digest::SHA256` or
Deprecated: Assign a `Digest` implementation class. This maybe any Ruby 
def digest_class=(klass)
  self.config = config.merge(digest_class: klass).freeze
end

def initialize_configuration(parent) 

def initialize_configuration(parent)
  @config = parent.config
  @computed_config = parent.computed_config
  @logger = parent.logger
  @context_class = Class.new(parent.context_class)
end

def version

configuration change to the `Environment` object.
It would be wise to increment this value anytime you make a

into the `Context`.
impossible to know when any custom helpers change that you mix
will take care of expiring the cache for you. However, its
Sprockets is able to track most file and directory changes and

expiring all asset caches.
The `Environment#version` is a custom value used for manually 
def version
  config[:version]
end

def version=(version)


environment.version = '2.0'

Assign an environment version. 
def version=(version)
  self.config = hash_reassoc(config, :version) { version.dup }
end