class Sprockets::Context

the target asset's dependencies.
file. Unlike `depend_on`, this will include recursively include
invalidate the dependency asset will invalidate the source
This is used for caching purposes. Any changes that would

without including it.
`depend_on_asset` allows you to state an asset dependency

def depend_on_asset(path)
  filename = resolve(path).to_s
  @_dependency_assets << filename
  nil
end