text: import { List } from 'immutable';
  
  const createBlockKeyStore = () => {
    let keys = List();
  
    const add = (key) => {
      keys = keys.push(key);
      return keys;
    };
  
    const remove = (key) => {
      keys = keys.filter((item) => item !== key);
      return keys;
    };
  
    return {
      add,
      remove,
      includes: (key) => keys.includes(key),
      getAll: () => keys,
    };
  };
  
  export default createBlockKeyStore;
  