[_alexander_]

Where is source code ? I need proof that React has performance problems., I use React.JS for large application with huge logic in one page and all works pretty fine on mobile devices and desktop ...

[TheCoelacanth]

I only see part of the source code, but what is there has two pretty big performance blunders (no PureRenderMixin, mutable state).

[vcarl]

PureRenderMixin and mutable state are still pretty common in React applications, I think it's realistic not to include them.

[quest88]

The article mentions the source code.