13 of the most popular object-oriented design patterns applied to Node.js.
The project run with Node.js. Download the Node.js source code or a pre-built installer for your platform
Download or clone the repository. Each folder has a working example of a pattern. Access the chosen pattern and run node index.js.
The singleton pattern is a design pattern that restricts the instantiation of a class to one object.
Specify the kind of objects to create using a prototypical instance, and create new objects by copying this prototype.
Define an interface for creating an object, but let subclasses decide which class to instantiate. The Factory method lets a class defer instantiation it uses to subclasses.
Separate the construction of a complex object from its representation so that the same construction process can create different representations.
Convert the interface of a class into another interface clients expect. Adapter lets classes work together that couldn’t otherwise because of incompatible interfaces.
Provide a surrogate or placeholder for another object to control access to it.
Compose objects into tree structures to represent part-whole hierarchies. Composite lets clients treat individual objects and compositions of objects uniformly.
Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality.
Avoid coupling the sender of a request to its receiver by giving more than one object a chance to handle the request. Chain the receiving objects and pass the request along the chain until an object handles it.
Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undoable operations.
Provide a way to access the elements of an aggregate object sequentially without exposing its underlying representation.
Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically.
Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm vary independently from clients that use it.
Please check out the How to contribute guide for guidelines about how to proceed.
This project is under MIT license. See the LICENSE file for more details.
Made with 💙 by Diego Mais 👋