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By Remo H. Jansen, Vilic Vane, Ivo Gabe de Wolff

Leverage the positive aspects of TypeScript to spice up your improvement abilities and create appealing applications

About This Book

  • Learn the way to boost modular, scalable, maintainable, and adaptable net purposes by means of benefiting from TypeScript
  • Explore options to exploit TypeScript along different top instruments akin to Angular 2, React, and Node.js
  • Focusing on layout styles in TypeScript, this step by step advisor demonstrates all of the very important layout styles in practice

Who This publication Is For

This studying direction is for intermediate-level JavaScript builders who are looking to use TypeScript to construct appealing internet functions and enjoyable tasks. No previous wisdom of TypeScript is needed, yet a simple figuring out of jQuery is anticipated. This studying direction can also be for skilled TypeScript builders who are looking to take their abilities to the subsequent point, and in addition for internet builders who desire to utilize TypeScript.

What you'll Learn

  • Understand the most important TypeScript language positive aspects and runtime
  • Install and configure the required instruments for you to commence constructing an application
  • Create object-oriented code that clings to the cast principles
  • Develop powerful purposes with checking out (Mocha, Chai, and SinonJS)
  • Apply GoF styles in an program with a checking out approach
  • Identify the demanding situations whilst constructing an application
  • Migrate JavaScript codebases to TypeScript to enhance your workflow
  • Utilize System.JS and Webpack to load scripts and their dependencies
  • Develop excessive functionality server-side purposes to run inside of Node.js

In Detail

TypeScript is an open resource and cross-platform typed superset of JavaScript that compiles to straightforward JavaScript that runs in any browser or any host. TypeScript provides non-compulsory static varieties, periods, and modules to JavaScript, to let nice tooling and higher structuring of enormous JavaScript purposes. via this three-module studying direction, you are going to study the ins-and-outs of TypeScript for development extra strong software.

The first module will get you begun with TypeScript and is helping the fundamentals of TypeScript and automation instruments. Get an in depth description of functionality, generics, callbacks, and gives you, and observe the object-oriented good points and reminiscence administration performance of TypeScript.

The subsequent module begins by means of explaining the present demanding situations whilst designing and constructing an software and the way you could remedy those demanding situations through using the proper layout development and top practices. you can be brought to low-level programming innovations that can assist you write TypeScript code, in addition to operating with software program structure, most sensible practices, and layout aspects.

The ultimate module may also help you construct an entire unmarried web page app with Angular 2, create a neat cellular app utilizing NativeScript, or even construct a Pac guy online game with TypeScript. as though the joys wasn't sufficient, you are going to additionally tips on how to migrate your legacy codebase from JavaScript to TypeScript.

By the tip of this studying course, it is possible for you to to take your talents up a notch and boost full-fledged net purposes utilizing the newest positive aspects of the TypeScript.

This studying direction combines the very best that Packt has to provide in a single entire, curated package deal. It comprises content material from the subsequent Packt products:

  • Learning TypeScript through Remo H. Jansen
  • TypeScript layout styles by means of Vilic Vane
  • TypeScript Blueprints through Ivo Gabe de Wolff

Style and approach

This is a step by step, sensible advisor masking the basics of TypeScript with useful examples. The end-to-end tasks incorporated during this booklet provides you with ready-to-implement ideas on your company situation, showcasing the intensity and robustness of TypeScript.

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Additional info for TypeScript Modern JavaScript Development

Example text

Let's take a look at the operations performed by the lint task, step by step: 1. ts. ts. 2. The output stream of the src function will be then redirected using the pipe function to be used as the tslint function input. 3. report function. ) before a path. ts; this is useful when the declaration files and source code files are located in the same directory. Compiling the TypeScript code We will now add two new tasks to compile our TypeScript code (one for the application's logic and one for the application's unit tests).

The task can be used to perform a wide variety of operations such as the compilation of TypeScript files or the compression of JavaScript files. The two most popular JavaScript task runners these days are Grunt and Gulp. Grunt started to become popular in early 2012 and since then the open source community has developed a large number of Grunt-compatible plugins. On the other hand, Gulp started to become popular in late 2013; therefore, there are less plugins available for Gulp, but it is quickly catching up with Grunt.

Ts"> Fortunately, we don't need to create the type definition files because there is an open source project known as DefinitelyTyped that already contains type definition files for many JavaScript libraries. In the early days of TypeScript development, developers had to manually download and install the type definition files from the DefinitelyTyped project website, but those days are gone, and today we can use a much better solution known as tsd. The tsd acronym stands for TypeScript Definitions and it is a package manager that will help us to manage the type definition files required by our TypeScript application.

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