pattern-memento

What problem does it solve?

This skill explains how to capture and restore an object's private state so undo/redo, snapshots, and rollback features work without violating encapsulation.

Core Features & Use Cases

• Originator and Memento roles: Define the Originator that creates mementos and the immutable Memento value object that stores its state.
• Caretaker history: Keep clean history management outside the Originator so snapshots can be replayed or reverted safely.
• Use Case: Apply the pattern when building draft/publish workflows, audit trails, or any feature that must restore complex domain objects to a prior state.

Quick Start

Use pattern-memento to snapshot the entity state before applying a risky update.