Class: WebpackRails::Task

Inherits:
NodeTask
  • Object
show all
Defined in:
lib/webpack_rails/task.rb

Defined Under Namespace

Classes: Error

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Task

Returns a new instance of Task.



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# File 'lib/webpack_rails/task.rb', line 94

def initialize
  super(self.class.webpack_task_script)
end

Class Method Details

.app_node_path ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 35

def app_node_path
  @app_node_path ||= File.join(root_dir, 'node_modules')
end

.build_result ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 50

def build_result
  begin
    JSON.parse(File.open(File.join(working_dir, 'webpack-build-result.json')).read)
  rescue Errno::ENOENT => e
    {modules: []}
  end
end

.root_dir ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 19

def root_dir
  @root_dir ||= defined?(Rails) ? Rails.root.to_s : Dir.pwd
end

.run_webpack(opts = nil) ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 58

def run_webpack(opts = nil)
  result = nil
  if ENV['DISABLE_WEBPACK']
    return build_result
  end

  task_duration = Benchmark.realtime do
    result = with_app_node_path do
      begin
        task = self.new
        task.run(opts)
        build_result
      rescue NodeTask::Error => e
        raise self::Error.new(e)
      end
    end
  end

  task_duration_ms = task_duration * 1000
  if defined?(Rails) && task_duration_ms > 10
    Rails.logger.info("Webpack: #{task_duration_ms.round(0)}ms")
  end

  result
end

.webpack_gem_dir ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 27

def webpack_gem_dir
  @webpack_gem_dir ||= File.dirname(File.expand_path(__FILE__))
end

.webpack_task_script ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 31

def webpack_task_script
  @webpack_task_script ||= File.join(webpack_gem_dir, 'webpack-task.js')
end

.with_app_node_path ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 39

def with_app_node_path
  prev_node_path = ENV['NODE_PATH']
  ENV['NODE_PATH'] = app_node_path
  return_value = nil
  Dir.chdir(root_dir) do
    return_value = yield
  end
  ENV['NODE_PATH'] = prev_node_path
  return_value
end

.working_dir ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 23

def working_dir
  @working_dir ||= _make_working_dir
end