React is built to interop with "general" JavaScript, so in theory you can use it with other rendering frameworks. I used React and D3 all the time. Performance

React is built to interop with "general" JavaScript, so in theory you can use it with other rendering frameworks. I used React and D3 all the time. Performance-wise, it IS better to stick to a single framework, so I see what you mean. Web components being implemented in the browser do mean the user doesn't have to download any more JS.