Роман

const GLOBALS = {
  'process.env': {
    'NODE_ENV': JSON.stringify('development')
  },  
  API_SECRET_KEY: JSON.stringify('efb9erfdf6fd9vfd98vd8ssv'),
};

module.exports = {
  plugins: [  
      new webpack.DefinePlugin(GLOBALS)
  ],

 externals: {
    API_SECRET_KEY: 'API_SECRET_KEY'
   },
}

var interceptor = ['$rootScope', '$q', function ($rootScope, $q) {

        function success(response) {
            return response;
        }

        function error(response) {
            var status = response.status; // error code

            if ((status >= 400) && (status < 500)) {
                $rootScope.broadcast("AuthError", status);
                return;
            }

            if ( (status >= 500) && (status < 600) ) {
                $rootScope.broadcast("ServerError", status);
                return;
            }

            // otherwise
            return $q.reject(response);

        }

        return function (promise) {
            return promise.then(success, error);
        }

    }];