Module 02 - Typescript


fun-with-ts	Introduction to Typescript

Typescript basics

We learned about the basic types of typescript
- The 6 atomic types of javascript: boolean, number, string, object, function and undefined
Typed arrays: number[] and Array<number>
Tuples: [number, number], [string, boolean, number]

Defining Classes
Declaring constructors and initializing fields in the constructor signature
private, public and protected fields
Defining property getters and setters
Using interfaces
- What is special about iterfaces in typescript
Using the let keyword
the type alias
Fixed object notation: {x: number, y: boolean}
Flexible object notation: {[key: string]: number} and the equivilent: Record<string, number>
Function notation: (x: number, y: string) => boolean
Typescript definition for Type Safety as "signature compatible"
Union Types
Cross Types
Mapped types

How to create working environment with npm and vscode
Defining source and dist folders
We saw how to create the tsconfig.json file and configure different aspects of the typescript project
- What the target version of javascript is
- Where to locate the source files
- Where to place the compiled files
- Libreries to include
- Adding map files to support debugging
- Running in the compiler in watch mode for continous compilation
We saw how to configure the VS Code Debugger for work with our node.js project