tastejs/todomvc — pull request #692 by vjeux (2013-10-06 02:53:35+00:00)
Title: React - Improve performance by 6x

2x: The minified version contains invariants that shouldn't be used in production and slow it down.
3x: Adding a shouldComponentUpdate override in order not short-cut re-rendering the component when props and state didn't change.

When React 0.5.0 will be released, it will give another 1.5x.