Mini-Training: TypeScript

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Information about Mini-Training: TypeScript
Technology

Published on February 18, 2014

Author: betclicTech

Source: slideshare.net

Description

TypeScript is a language for application-scale JavaScript development.
TypeScript is a typed superset of JavaScript that compiles to plain JavaScript.
Any browser. Any host. Any OS. Open Source.

01/2014

Agenda What is TypeScript. Language Features. Integration in Environnement. Future. 2

What is TypeScript Why create TypeScript CoffeScript, Dart, TypeScript… Transcripting. 3

What is TypeScript/Why create TypeScript • TypeScript is just a tool to be used at coding-time to improve the quality of your JavaScript • TypeScript is designed for development of large applications and compiles down to JavaScript • Adds optional static typing and class-based POO to the language 4

What is TypeScript/CoffeScript, Dart, TypeScript • CoffeeScript – a fresh coat of paint • Dart – a fresh look at the web • TypeScript – the JavaScript of tomorrow 5

What is TypeScript/Transcripting • In reality is not a compilation but a transcripting 6

Language Features Primitive Type Grammar Generics Poo Parametres Exception Include / Reference 7

Language Features / Primitive Type • • • • • • • • Number Boolean String Void Null Undefined Enum String Literal 8

Language Features / Grammar 9

Language Features / Grammar var myString = 'A String'; var myNumber = 1; var myBoolean = true; var myString: string = 'A String'; var myNumber: number = 1; var myBoolean: boolean = true; 10

Language Features / Grammar var example = { name: 'Example', id: 5, collection: ['a', 'b', 'c'] } 11

Language Features / Grammar var example: { name: string; id: number; collection: string[]; } = { name: 'Example', id: 5, collection: ['a', 'b', 'c'] } 12

POO / Items Classes Interfaces Function Modules Generic 13

Classes class Car { // Property (public by default) engine: string; // Constructor // (accepts a value so you can // initialize engine) constructor(engine: string) { this.engine = engine; } } 14

Interface interface ICar { engine: string; color: string; } class Car implements ICar { constructor( public engine: string, public color: string) { } } 15

Function class Car { engine: string; constructor(engine: string) { this.engine = engine; } start() { return "Started " + this.engine; } } 16

Generics class G<T> { // parameter T self: G<T>; // T type argument f() { // Both of type G<T> this.self = this; } } 17

Module module Shapes { export class Rectangle { constructor( public height: number, public width: number) { } } } // This works! var rect = Shapes.Rectangle(10, 4); 18

Module // bootstrapper.ts file // imports the greeter.ts file as the greeter module import gt = module('greeter'); export function run() { var el = document.getElementById('content'); var greeter = new gt.Greeter(el); greeter.start(); } 19

POO / Keyword • • • • • • Public Private Interface Class Implements Module 20

POO/ Function overload function func(shape: Square): number; function func(shape: Ellipse): number; function func(shape: Triangle): number; function func(shape: Shape): number { if (shape instanceof Square) { // Do something } // ... throw new TypeError("Unsupported type!"); } 21

Language Features / Parameter print(char: string = '0') { } print4(index: number = this.length): number { } print2(char?: string) { } print3(...num: number[]) { } 22

Language Features / Exception • TypeScript using the throw keyword. In JavaScript you can follow the throw statement with any type, although typically strings are used to supply an error message. In TypeScript it is more usual to throw an “Error” object. • Only on catch for multiple object Exception 23

Language Features / References /// <reference path="SimplSocket.ts" /> module MyWebApp.BusinessLogic { class ComplexWebSocket extends MyWebApp.BusinessLogic.SimplSocket { } } 24

Integration in Environnement Editor Web Essentials 25

Environnement / Editor • Visual studio, WebStorm with IntelliSense and Debug. • Sublime Text 2, Vim and eMacs, but it does not include the TLS, so there is no IntelliSense 26

Environnement / Web Essentials • Produce a minified version of the generated JavaScript file. • Will automatically produce source map (.js.map) files for debugging purposes as soon as the .ts file is saved. • … 27

Future • 0.9.5 – Focus on user-report issues, Improve reliability, Improve CPU- and memory-usage • 1.0RC – Finish stability work, Finish conformance with 1.0 spec • 1.0 – Begin backward-compatibility 28

Future • 1.x – Async/Await – Mixins – Protected access – More ECMAScript 6 language features – ECMAScript 6 modules syntax – ES6-compatible codegen 29

Questions? 30

Some links… http://www.typescriptlang.org/ http://typescript.io/ http://en.wikipedia.org/wiki/TypeScript http://www.dotnetcurry.com/showarticle.aspx?ID=939 http://www.johnpapa.net/typescriptpost2/ http://www.codeproject.com/Articles/469280/An-introduction-to-Type-Script http://codeforhire.com/2013/06/18/coffeescript-vs-typescript-vs-dart/ 31

Some books… 32

Find out more • On https://techblog.betclicgroup.com/

About Betclic • • • Betclic Everest Group, one of the world leaders in online gaming, has a unique portfolio comprising various complementary international brands: Betclic, Everest Gaming, bet-athome.com, Expekt… Active in 100 countries with more than 12 million customers worldwide, the Group is committed to promoting secure and responsible gaming and is a member of several international professional associations including the EGBA (European Gaming and Betting Association) and the ESSA (European Sports Security Association). Through our brands, Betclic Everest Group places expertise, technological know-how and security at the heart of our strategy to deliver an on-line gaming offer attuned to the passion of our players.

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