module Sprockets::ProcessorUtils

Returns a Hash with :data and other processor metadata key/values.

input - Hash of input data to pass to each processor
processors - Array of processor callables

bundle.call(uglify.call(coffee.call(input)))

Think about:
The right to left order processing mirrors standard function composition.

Public: Invoke list of processors in right to left order.

def call_processors(processors, input)
  data = input[:data] || ""
  metadata = (input[:metadata] || {}).dup
  processors.reverse_each do |processor|
    result = call_processor(processor, input.merge(data: data, metadata: metadata))
    data = result.delete(:data)
    metadata.merge!(result)
  end
  metadata.merge(data: data)
end