text: export default (state = [], action) => {
    switch(action.type) {
      case `STOP_FETCHING_${action.dataType}`:
        return state.filter((i) => i !== action.dataType.toLocaleLowerCase())
      case `START_FETCHING_${action.dataType}`:
        return state.concat(action.dataType.toLocaleLowerCase())
      default: 
        return state;
    }
  };
  
  