browserify.rb

module Browserify
  mattr_accessor(:base_dir) { "app/assets/browserify" }
  # mattr_accessor(:transform) { 'babelify' }
  mattr_accessor(:command) { '$(npm bin)/browserifyinc' }

  class << self
    def inline_bundle(context, entry: nil, require: nil, external: nil, transform: nil, source_map: true)

      p 'inline_bundle'
      p entry


      opts = browserify_opts(entry, require, external, transform, source_map)
      deps = bundle_deps(entry)
      deps.each{ |d| context.depend_on d }


      puts  "#{command} #{opts}"

      `#{command} #{opts}`
    end

    private
    def browserify_opts(entry, require, external, transform, source_map)
      opts = []

      opts << Array.wrap(transform).map { |i| "-t #{i}" }
      opts << Array.wrap(entry).map { |i| "-e #{base_dir}/#{i}" }
      opts << Array.wrap(require).map { |i| "-r #{i}" }
      opts << Array.wrap(external).map { |i| "-x #{i}" }

      opts << "--fast"
      opts << "--full-paths"

      opts << "--cachefile tmp/cache/browserify-cache.json"
      opts << "--debug" if source_map && Rails.env.development?

      opts.join(' ')
    end

    def bundle_deps(entry)
      deps = []
      deps << __FILE__
      return deps if entry.blank?

      deps += Dir[Rails.root.join('app/assets/browserify/**/*')]
      deps
    end
  end
end