React is a framework. You can call it a library as much as you like, but that doesn't make it a fact. It comes down to this: What is the relationship between y

React is a framework. You can call it a library as much as you like, but that doesn't make it a fact. It comes down to this: What is the relationship between your code and the 3rd party code? Are you calling it, or is it calling you? If most of the code you write is extending some 3rd party code, e.g. React.Component, and most of the time your code is being executed by the 3rd party code, e.g. as render() calls, then what you have is a framework. React and its myriad extensions may be as great as people are saying, but this insistence that it is a "library" only serves to make the community look delusional.