core VS jest

Nuxt is an open-source framework for building performant websites and full-stack applications using Vue.js. It provides performance and SEO benefits, and adds full-stack capabilities for Vue apps.

As you can see, it's a simple Single Page Application built with Vue.js where our users can sign up / sign in with a few clicks.

Similarly to Promises/A+, this effort focuses on aligning the JavaScript ecosystem. If this alignment is successful, then a standard could emerge, based on that experience. Several framework authors are collaborating here on a common model which could back their reactivity core. The current draft is based on design input from the authors/maintainers of Angular, Bubble, Ember, FAST, MobX, Preact, Qwik, RxJS, Solid, Starbeam, Svelte, Vue, Wiz, and more…

Vue.js is an open source web framework that makes developing web applications easier.

Frameworks and Libraries: There are numerous JavaScript frameworks and libraries, such as React, Angular, and Vue.js, which simplify the development of complex web applications.

Javascript in the browser React - react is a library that gives developers an application programming interface (API) to manipulate the DOM (this is React's ReactDOM package). React uses components and JSX to make building reusable code easier. docs JSX - is a syntax extension for React Javascript code that lets you write HTML-like markup in a javascript file. This makes it easier to write reusable HTML. docs State - a key react concept that guides setting and storage of data between renders. docs Hooks - a key react concept for logic triggered by state change docs Vue - is a framework for building web interfaces. Vue is lightweight and best for small projects prioritizing speed over functionality. doc Angular - web development framework. Angular is best for dynamic more feature rich sites. docs

Vue

Vue 3 Reactivity Source Code

Nonetheless, it offers nearly infinite possibilities. You can code and create anything, from a mobile app with React Native to a desktop application with Electron.js. Furthermore, JavaScript provides excellent frameworks and libraries that can be applied in various approaches, such as React, Three, Vue, Meteor, and Astro.

From your own example, here is the text from https://vuejs.org/ as of today:

> The Progressive JavaScript Framework

> An approachable, performant and versatile framework for building web user interfaces.

> Approachable - Builds on top of standard HTML, CSS and JavaScript with intuitive API and world-class documentation.

> Performant - Truly reactive, compiler-optimized rendering system that rarely requires manual optimization.

> Versatile - A rich, incrementally adoptable ecosystem that scales between a library and a full-featured framework.

Yes, performance is mentioned. But it's hardly the main selling point, and they don't even mention DOM manipulation, they're talking about the rendering in general.

Lit isn't even a framework, it's a "web components library".

> all modern frameworks

Yeah, "all modern frameworks" being one framework + one library?

GitHub | Website

Jest

you have selected a testing framework. In my case, it's Jest with Supertest

Jest, created and maintained by Facebook, is a JavaScript testing framework with a focus on simplicity. It is often recognized for its zero-configuration setup and seamless integration, especially with React applications, making it a favored choice for developers in both small-scale projects and large enterprise applications.

Jest (https://jestjs.io/)

console.error Jest encountered an unexpected token Jest failed to parse a file. This happens e.g. when your code or its dependencies use non-standard JavaScript syntax, or when Jest is not configured to support such syntax. Out of the box Jest supports Babel, which will be used to transform your files into valid JS based on your Babel configuration. By default "node\_modules" folder is ignored by transformers. Here's what you can do: • If you are trying to use ECMAScript Modules, see https://jestjs.io/docs/ecmascript-modules for how to enable it. • If you are trying to use TypeScript, see https://jestjs.io/docs/getting-started#using-typescript • To have some of your "node\_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config. • If you need a custom transformation specify a "transform" option in your config. • If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option. You'll find more details and examples of these config options in the docs: https://jestjs.io/docs/configuration For information about custom transformations, see: https://jestjs.io/docs/code-transformation

Note: I will be using Jest as testing framework throughout the examples.

We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!

Jest has long been my favorite got to test runner when it comes to UI unit and integration testing. With tools like React Testing Library (Testing Library framework for React) you get the benefit of very easy to write and maintain tests, as well as a quick and efficient way to run our tests.

Jest is a well-regarded JavaScript testing framework primarily designed for React applications, although its utility extends to projects using Babel, JavaScript, Node, Angular, and Vue. Created by Facebook, Jest emphasizes ensuring the correctness of JavaScript codebases. It allows developers to write tests with a familiar, feature-rich API, making the testing process swift and enjoyable​​.