The RFC for getDerivedStateFromProps (https://github.com/reactjs/rfcs/blob/master/text/0006-static-lifecycle-methods.md#common-problems https://github.com/react

The RFC for getDerivedStateFromProps (https://github.com/reactjs/rfcs/blob/master/text/0006-static-lifecycle-methods.md#common-problems https://github.com/reactjs/rfcs/blob/master/text/0006-static...) mentions a few! • Initializing Flux stores in componentWillMount. It's often unclear whether this is an actual problem or just a potential one (eg if the store or its dependencies change in the future). Because of this uncertainty, it should be avoided. • Adding event listeners/subscriptions in componentWillMount and removing them in componentWillUnmount. This causes leaks if the initial render is interrupted (or errors) before completion. • Non-idempotent external function calls during componentWillMount, componentWillUpdate, componentWillReceiveProps, or render (eg registering callbacks that may be invoked multiple times, initializing or configuring shared controllers in such a way as to trigger invariants, etc.) Edit: For formatting