/// <summary>
        /// Constructs a instance of CoffeeScript translator
        /// </summary>
        /// <param name="createJsEngineInstance">Delegate that creates an instance of JS engine</param>
        /// <param name="coffeeConfig">Configuration settings of CoffeeScript translator</param>
        public CoffeeScriptTranslator(Func <IJsEngine> createJsEngineInstance,
                                      CoffeeScriptSettings coffeeConfig)
        {
            Bare = coffeeConfig.Bare;

            if (createJsEngineInstance == null)
            {
                string jsEngineName = coffeeConfig.JsEngine.Name;
                if (string.IsNullOrWhiteSpace(jsEngineName))
                {
                    throw new ConfigurationErrorsException(
                              string.Format(CoreStrings.Configuration_JsEngineNotSpecified,
                                            "coffeeScript",
                                            @"
  * JavaScriptEngineSwitcher.Msie
  * JavaScriptEngineSwitcher.V8
  * JavaScriptEngineSwitcher.ChakraCore",
                                            "MsieJsEngine")
                              );
                }

                createJsEngineInstance = () => JsEngineSwitcher.Instance.CreateEngine(jsEngineName);
            }
            _createJsEngineInstance = createJsEngineInstance;
        }
		/// <summary>
		/// Constructs a instance of CoffeeScript-translator
		/// </summary>
		/// <param name="createJsEngineInstance">Delegate that creates an instance of JavaScript engine</param>
		/// <param name="coffeeConfig">Configuration settings of CoffeeScript-translator</param>
		public CoffeeScriptTranslator(Func<IJsEngine> createJsEngineInstance,
			CoffeeScriptSettings coffeeConfig)
		{
			Bare = coffeeConfig.Bare;

			if (createJsEngineInstance == null)
			{
				string jsEngineName = coffeeConfig.JsEngine.Name;
				if (string.IsNullOrWhiteSpace(jsEngineName))
				{
					throw new ConfigurationErrorsException(
						string.Format(CoreStrings.Configuration_JsEngineNotSpecified,
							"coffeeScript",
							@"
  * JavaScriptEngineSwitcher.Msie
  * JavaScriptEngineSwitcher.V8",
							"MsieJsEngine")
					);
				}

				createJsEngineInstance = (() =>
					JsEngineSwitcher.Current.CreateJsEngineInstance(jsEngineName));
			}
			_createJsEngineInstance = createJsEngineInstance;
		}