Design patterns in TypeScript with Node

Setup

Tested on node 10

npm install

Creational: Singleton

Blog post: 3 Ways to Implement the Singleton Pattern in TypeScript with Node.js

Problem: Maintain a single instance of the Logger class

tsc && node dist/creational/singleton/problem/index.js

Solution #1: Add a separate Singleton Class

tsc && node dist/creational/singleton/separateClass/index.js

Solution #2: Modify the class that you want to use as a Singleton

tsc && node dist/creational/singleton/sameClass/index.js

Solution #3: The easiest way - module singletons

tsc && node dist/creational/singleton/separateClass/index.js