13 of the most popular object-oriented design patterns applied to Node.js.
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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.
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Made with 💙 by Diego Mais 👋
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