Getting Started : Design Patterns in TypeScript
1Design Patterns In TypeScript (book)
https://www.amazon.com/dp/B0948BCH24 : ASIN B0948BCH24
https://www.amazon.com/dp/B094716FD6 : ASIN B094716FD6
Documentation : https://sbcode.net/typescript/getting_started/
TypeScript is a tool to help you write type-safe JavaScript. JavaScript is a weakly typed language which means that types are assigned implicitly as they are used at runtime. While this can be considered a feature, it can be dangerous if your code needs to be treating types precisely at all times. Enforcing type safety ensures that all usage of the properties, functions and classes are consistent within your application and as a result makes your application more robust.
When writing TypeScript, it will appear in many ways very similar to JavaScript. TypeScript is a subset of JavaScript. So, you can write JavaScript in a TypeScript file first, but the IDE, VSCode in my case, will indicate many suggestions on how to modify your code to be more type safe.
In this next section on TypeScript basics, we will go through many concepts which may be JavaScript first but you will see the TypeScript equivalent so that you can get a better understanding between the languages.