React is a library because it focuses on providing a specific set of features for building user interfaces. It is designed to handle the view layer of web applications and provides a way to build reusable UI components.
A library is a collection of prewritten code that can be used to perform specific tasks, while a framework is a more comprehensive solution that provides a set of rules and guidelines for building an application. React is a library because it focuses on the view layer and leaves other concerns, such as routing and state management, to other libraries or frameworks.
React can be easily replaced with another JavaScript packages that provide similar functionality. It is easily plugged into an existing technology stack and follows the UNIX philosophy. So, React is a library.
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