Hapi.js
Hapi.js is a rich, open-source Node.js framework for building applications and services, known for its configuration-centric approach and robust plugin system. It provides a powerful set of tools for handling HTTP requests, input validation, caching, authentication, and more, with a focus on security and reliability. Originally developed by Walmart Labs, it is widely used for creating scalable APIs, web applications, and microservices.
Developers should learn Hapi.js when building enterprise-grade Node.js applications that require strong security, extensive configuration options, and a modular architecture. It is particularly well-suited for creating RESTful APIs, microservices, and complex web applications where features like input validation, authentication, and error handling are critical. Its plugin system allows for easy extensibility and code reuse, making it ideal for large-scale projects.