Stop masking context

[gingur]

Feature

Return all contextProps available via a wildcard prop, this would be helpful for those who want to do shouldComponentUpdate comparisons with props, state, and context.

Possible solutions

static contextTypes = true;
// or
static contextTypes = /.*/;
// or
static contextTypes = {
  __all: true
}

[brigand]

This could also be used in the case where you ReactDOM.render inside a component and want to preserve things like the redux store and react-router.

[gingur]

That's a great point @brigand! Passing, cloning, or even serializing the context data could benefit from this feature.

[gaearon]

We'll be changing how context works, and I don't think properly exposing it in shouldComponentUpdate in the current form is a goal.

That said we'll probably get rid of masking so I'll hijack this issue to track it.

[gingur]

I don't know what that means, but as long as I can prevent wasted renders based on props, state and context I'm a happy camper. If this is something that can automatically be handled by PureComponent even better :)

[gaearon]

The proposed context API solves this (reactjs/rfcs#2) and we don't plan changes to the existing one so I think this is not relevant anymore.