factory-pattern

SKILL.md

Factory Pattern

With the factory pattern we can use factory functions in order to create new objects. A function is a factory function when it returns a new object without the use of the new keyword!

Say that we need many users for our application. We can create new users with a firstName, lastName, and email property. The factory function adds a fullName property to the newly created object as well, which returns the firstName and the lastName.

When to Use

Use this when you need to create multiple objects that share the same properties

This is helpful when object creation depends on a certain environment or configuration

When NOT to Use

For simple objects where a plain object literal suffices — a factory adds unnecessary indirection

When class constructors are the established convention in your project and the team expects new

When there's no conditional logic or configuration driving object creation

Instructions