Eris
Eris is a Discord API library for Node.js that provides a robust and feature-rich interface for building Discord bots and applications. It supports the full Discord API, including voice, sharding, and interactions, with an object-oriented design that simplifies bot development. The library is actively maintained and widely used in the Discord bot ecosystem for its performance and comprehensive documentation.
Developers should learn Eris when building Discord bots in Node.js, especially for complex applications requiring voice support, sharding for large-scale bots, or advanced features like slash commands and message components. It's ideal for projects where reliability, extensive API coverage, and community support are priorities, such as moderation bots, music bots, or gaming community tools.