text: import constants from '../constants';
  // import Immutable from 'immutable';
  
  const initialState = {
    updatedAt: new Date(),
    files: [],
    error: undefined,
  };
  
  const outputReducer = (state, action) => {
    switch (action.type) {
    case constants.output.OUTPUT_FILE_DATA_SUCCESS:
      var outputPayload = action.payload;
      return Object.assign({}, state, {
        updatedAt: new Date(),
        files: state.files.concat([ outputPayload, ]),
      });
    case constants.output.OUTPUT_FILE_DATA_ERROR:
      var errorPayload = action.payload;
      return Object.assign({}, state, {
        updatedAt: new Date(),
        error: errorPayload,
      });
    default:
      return Object.assign({}, initialState, state);
    }
  };
  
  export default outputReducer;