How to set up internationalization in React using Lingui.js

Lingui.js is a lightweight internationalization library designed for JavaScript applications, particularly those built with React, offering features not found in other popular libraries like react-intl and i18next. With a size of just 5KB, Lingui.js is optimized for performance and provides a variety of features, such as macros for generating message syntax, support for rich-text translations, and an ICU MessageFormat for readability. The library is easy to integrate into React and React Native applications, supported by an active community, and well-documented with tutorials and API references. Lingui.js is suitable for any static application and is particularly efficient for resource-intensive real-time applications. The article provides a step-by-step guide on setting up Lingui.js in a React app using create-react-app, including installing necessary dependencies, configuring the library, and managing translations through a simple user interface with dynamic language selection. The process involves extracting messages from the source code, creating locale-specific translations, and compiling them to enable multilingual support in the application.