CommandPatternJavaScriptDatabase.js

// Command
const InsertCommand = (database, id) => {
  return {
    execute: () => database.insertRecord(id),
    undo: () => database.deleteRecord(id)
  };
};

// Receiver
const insertRecord = id => console.log('>>> Database insert', id);
const deleteRecord = id => console.log('<<< Database delete', id);
const Database = () => {
  return {
    insertRecord,
    deleteRecord
  };
};

// Invoker
const rollback = stack => {
  while (stack.length > 0) stack.pop().undo();
};
const TransactionStart = commands => {
  const stack = [];
  commands.map((command, index) => {
    if (index === 2) {
      console.log('Something went wrong, rollback transaction');
      rollback(stack);
      return;
    }

    command.execute();
    stack.push(command);
  });
};

// Client
const Application = () => {
  const database = Database(); // Receiver
  const commands = []; // Commands
  commands.push(InsertCommand(database, 4673));
  commands.push(InsertCommand(database, 7890));
  commands.push(InsertCommand(database, 1234));
  TransactionStart(commands); // Invoker
};

Application();