const useNormalizedApi = () => {
  let db = useDB();

  return {
    ...
    deleteTodo: async (id) => {
      let todo = await api.deleteTodo(id);
      let { result, entities } = normalize(
        todo,
        apiSchemas.deleteTodoResponseSchema
      );
      db.mergeEntities({
        Todo: {
          [id]: {
            isDeleted: true
          }
        }
      });
      db.updateStoredQuery(
        'ALL_TODOS',
        (prevArray) => prevArray.filter(todoId => todoId != id)
      );
    },
    ...
  };
};

const TodosComponent = (props) => {
  let db = useDB();

  let allTodosQuery = db.getStoredQuery('ALL_TODOS');
  let todos = db.executeQuery(allTodosQuery);

  return (
    <JSON data={todos} />
  )
}