Class: WebpackRails::Task

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

Defined Under Namespace

Classes: Error

Class Method Summary collapse

Class Method Details

.alive? ⇒ Boolean

TODO: move to NodeTask

Returns:

  • (Boolean) 


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# File 'lib/webpack_rails/task.rb', line 67

def alive?
  current_pid = nil
  alive = false
  if @controller
    begin
      current_pid = @controller.pid
    rescue Errno::ENOENT
    end
  end
  if current_pid
    begin
      Process.getpgid(current_pid)
      alive = true
    rescue Errno::ESRCH
    end
  end
  alive
end

.app_node_path ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 51

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

.build_once(webpack_task_config) ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 86

def build_once(webpack_task_config)
  WebpackRails::Task.with_app_node_path do
    webpack_cmd_script = `#{WebpackRails::Task.node_command} -e "process.stdout.write(require.resolve('webpack/bin/webpack.js'))"`
    system "#{WebpackRails::Task.node_command} #{webpack_cmd_script} --config #{webpack_task_config[:webpack_config_file]}"
  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 = {}) ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 93

def run_webpack(opts = {})
  return if ENV['DISABLE_WEBPACK']

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

  task_duration_ms = task_duration * 1000
  if defined?(Rails) && result
    if opts[:dev_server] && result[:started]
      Rails.logger.info("Started webpack-dev-server in #{task_duration_ms.round(0)}ms")
    end
  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_dev_server_script ⇒ Object 



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

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

.webpack_task_opts(opts) ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 45

def webpack_task_opts(opts)
  opts.merge(
    webpack_config_file: opts[:webpack_config_file] ? opts[:webpack_config_file].to_s : nil,
  )
end

.webpack_task_script(opts) ⇒ Object 



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

def webpack_task_script(opts)
  return webpack_task_watch_script if opts[:watch]
  return webpack_task_dev_server_script if opts[:dev_server]
  fail "can't determine which task to run"
end

.webpack_task_watch_script ⇒ Object 



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

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

.with_app_node_path ⇒ Object 



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# File 'lib/webpack_rails/task.rb', line 55

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