React Application Development Tools: UI, Styling, State Management, Testing
Software development consultancy specializing in Ruby on Rails, React, Vue.js
If you have chosen React for building a web app, you will still need additional technologies and frameworks to expand and grow your project, add functionality and integrations.
At Codica, we specialize in building maintainable, sustainable, and scalable React applications. We use the whole range of advanced instruments including UI frameworks, CSS tools, state management libraries, and testing tools.
In this post, we will take a closer look at each of these instruments.
Many developers acknowledge the importance of UI frameworks. Coders admit their ability to speed up and simplify the process of building a web app. However, we have another solid reason to use frameworks. They solve the problem of synchronizing the UI and the internal app state.
An excellent UI requires creating the best possible graphical solution.
At Codica, we use the following popular UI frameworks:
is an open-source design system for web apps with a set of high-quality out-of-the-box React components. According to the official documentation, the list of features is as follows:
- A whole package of design resources and development tools;
- Internationalization support for dozens of languages;
- Powerful theme customization in every detail.
Google introduced this design language
in 2014. It is equipped with grid-based layouts, flexible animation, add-ons, and depth effects. The main out-of-the-box features include:
- Blazing fast performance;
- Extensibility via a plugin API;
- Usage of CSS-in-JS in its core which works at runtime and server-side.
Material Design is aimed at three things: Creation, Unification, and Customization.
Semantic UI React
Semantic UI React
is an official React JS integration for Semantic UI. Apart from features offered by the official tool, it has some additional functionality: a Declarative API, Augmentation, and Auto Controlled State.
Today, ReactJS developers require complex toolchain to write CSS code. By knowing how to style your ReactJS app properly, you can make a significant contribution to the project’s success.
Your application should have a unique, intuitive, and visually appealing interface to offer a seamless UX experience.
There are different approaches to app stylization. However, we want to focus on the two primary options we use in practice:
- Modular Stylesheets;
Let’s discuss each CSS tool.
Not being an official specification, CSS modules are not implemented in browsers. Rather, it is a task launched at the project bundle stage. During this process, the class names and selectors are altered so that a kind of local scope emerges (something like a namespace).
This approach is aimed at solving the problem of global scope in CSS. The modules ensure that all styles of one component are in one place and are applied only to that particular block.
There have been numerous discussions around state management in React application development. Similarly, the tool required for operating with the React.js app state management is a trending topic as well.
The most widespread instruments are Redux and MobX. We will discuss their pros and cons and functionality differences. Let’s start with Redux.
. Its numerous possibilities make Redux a suitable solution for complex web products.
The library works for single-page applications (SPA) where an app’s growth can make state management more complicated.
1. Single source of truth
Redux uses only one store
for the entire application state.
2. State is read-only
As per Redux documentation, “The only way to change the state is to emit an action
, an object describing what happened”.
3. Changes are made with pure functions
is a library that allows managing the app state. TFRP
simplifies it and makes it more scalable. Michel Weststrate created it in 2015 to help make the state consistent.
The major components of MobX are:
Arrays, references, and objects are considered as the application data cells in a state.
Derivations are the values that the application state processes automatically.
Reactions mainly are responsible for input-output operations and DOM updating. Network requests should be handled on time automatically.
Actions modify the state while MobX ensures that all the changes are processed synchronically.
The library supports Node.js
, React Native
and all the browsers (except for IE). It is worth noting that MobX is not a framework. It knows nothing on how to structure your code, process and store the data.
Testing is performed when developers need to validate the functionality created within the defined requirements. The core parts of this process are planning, test creation and running, and analysis of the received results.
Software testing encompasses the following activities:
- Analysis and planning;
- Development of test scenarios;
- Assessment of tests completing criteria;
- Writing reports;
- Documentation and code review;
- Static analysis.
When choosing a technique of testing React JS applications, take a look at the Agile testing pyramid. It helps you find the most appropriate method.
The pyramid shows that many unit-snapshot tests can be used to validate one integration test. This way, many integration tests can be used to validate one manual test. At the peak of the pyramid, we have an end-to-end test: manual testing of the whole application.
Let’s step forward and discuss the most efficient tools for testing your React.js application.
Simply put, Jest gives you an opportunity to write tests with an approachable API that gives you results rapidly. Your task is to define input parameters and the output that should be produced by a component.
The main task of Cypress is to check the interaction of the client parts with the server (so-called end-to-end tests). Also, the tool offers integration tests of the individual page components.
We believe our best practices will be useful when you choose React app development for building complicated and scalable products.
UI frameworks, CSS tools, state management and testing libraries discussed above will make the project development process smooth and simple.
Subscribe to get your daily round-up of top tech stories!