Book Image

The JavaScript Workshop

By : Joseph Labrecque, Jahred Love, Daniel Rosenbaum, Nick Turner, Gaurav Mehla, Alonzo L. Hosford, Florian Sloot, Philip Kirkbride
Book Image

The JavaScript Workshop

By: Joseph Labrecque, Jahred Love, Daniel Rosenbaum, Nick Turner, Gaurav Mehla, Alonzo L. Hosford, Florian Sloot, Philip Kirkbride

Overview of this book

If you're looking for a programming language to develop flexible and efficient apps, JavaScript is a great choice. However, while offering real benefits, the complexity of the entire JavaScript ecosystem can be overwhelming. This Workshop is a smarter way to learn JavaScript. It is specifically designed to cut through the noise and help build your JavaScript skills from scratch, while sparking your interest with engaging activities and clear explanations. Starting with explanations of JavaScript's fundamental programming concepts, this book will introduce the key tools, libraries and frameworks that programmers use in everyday development. You will then move on and see how to handle data, control the flow of information in an application, and create custom events. You'll explore the differences between client-side and server-side JavaScript, and expand your knowledge further by studying the different JavaScript development paradigms, including object-oriented and functional programming. By the end of this JavaScript book, you'll have the confidence and skills to tackle real-world JavaScript development problems that reflect the emerging requirements of the modern web.
Table of Contents (17 chapters)

12. Using Next-Generation JavaScript

Activity 12.01: Creating a Project to Recognize and Compile TypeScript Files

Solution:

  1. The first step is to create a new project directory, then cd into it, and initialize it for npm:
    mkdir my_app
    cd my_app
    npm init
  2. Next, install Parcel as a global library:
    npm install -g parcel
  3. Now, you will need to install TypeScript, which you can also save as a global library:
    npm install -g typescript
  4. To generate the configuration for TypeScript, you simply need to call the TypeScript CLI tool, tsc, and pass it the --init flag:
    tsc --init

    If all went well, you should be presented with a message such as the following:

    message TS6071: Successfully created a tsconfig.json file.

    You should also find a new tsconfig.json file in the root of your project folder.

  5. Next, create a directory called src and place an index.ts file within it. Add the following code as the file's content:
    const message:string = "Hello, World!";
    console...