Book Image

Vue.js 3 Cookbook

By : Heitor Ramon Ribeiro
Book Image

Vue.js 3 Cookbook

By: Heitor Ramon Ribeiro

Overview of this book

Vue.js is a progressive web framework for building professional user interfaces for your web applications. With Vue.js 3, the frontend framework is reinforced with architectural enhancements, new base languages, new render processes, and separated core components. The book starts with recipes for implementing Vue.js 3’s new features in your web development projects and migrating your existing Vue.js apps to the latest version. You will get up and running with TypeScript with Vue.js and find succinct solutions to common challenges and pitfalls faced in implementing components, derivatives, and animation, through to building plugins, adding state management, routing, and developing complete single-page applications (SPAs). As you advance, you'll discover recipes to help you integrate Vue.js apps with Nuxt.js in order to add server-side rendering capabilities to your SPAs. You'll then learn about the Vue.js ecosystem by exploring modern frameworks such as Quasar, Nuxt.js, Vuex, and Vuetify in your web projects. Finally, the book provides you with solutions for packaging and deploying your Vue.js apps. By the end of this Vue.js book, you'll be able to identify and solve challenges faced in building Vue.js applications and be able to adopt the Vue.js framework for frontend web projects of any scale.
Table of Contents (13 chapters)
Fetching Data from the Web via HTTP Requests
Managing Routes with vue-router
Managing the Application State with Vuex
Directives, Plugins, SSR, and More


A new feature was introduced in ECMAScript 6—classes. With the introduction of these, the usage of decorators was made possible on the JavaScript engine.

Decorators provide a way to add both annotations and meta-programming syntax to class declarations and its members. As it's in a final state of approval on the TC-39 committee (where TC stands for Technical Committee), the TypeScript compiler already has this available to be used.

To enable it, you can set the flags on the tsconfig.json file:

"compilerOptions": {
"target": "ES5",
"experimentalDecorators": true

Decorators are a special kind of declaration that can be attached to a class, method, accessor property, or parameter. They are used in the form of @expression, where the expression is a function that will be called at runtime.

An example of a decorator that can be applied to a class can be seen in the following code snippet:

function classSeal(constructor: Function) {

When you create this function, you are saying that the object of the constructor and the prototype of it will be sealed.

To use it inside a class is very simple:

class Animal {
sound: string;
constructor(sound: string) {
this.sound = sound;
emitSound() {
return "The animal says, " + this.sound;

These are just some examples of decorators and their powers to help you with the development of object-oriented programming (OOP) with TypeScript.