Hello
How
Why
What
What is Typescript?
A language - static typed Javascript superset
Aims to extend the language, not branch out from it.
Compiler
Highly configurable, targets JS runtimes - the browser and / or Node.js
Open source
Developed and maintained by Microsoft
What
Why Typescript?
Why
Why use Typescript?
Why
Scalable Javascript in large teams
Reduces the amount of bugs at compile time
Type safety
Provides an opt-in static type system for Javascript
ESNext
Use today planned Javascript features from the future
Opt-in adoption curve
Write plain Javascript code and add TS features as you go.
Productivity
Great intellisense, VSCode already uses TS under the hood
Typescript features
Type annotation + Type inference
Why
Decorators
Ambient Declarations
Generics
Modules
Interfaces
Other ES6/ESNext features
Arrow functions, destructuring, rest/spread operator, template literals and more
Classes
Enhanced class features while supporting JS class features
JS types plus unique extended TS types annotation & inference
Demo time!
How