In Query component, data can be undefined

[maxsalven]

In the Query component, the render prop function returns an object with a data field. I believe the intention is for this to always default to an empty object, rather than be undefined:
https://www.apollographql.com/docs/react/essentials/queries.html#render-prop

This allows checks like if (data.user) instead of if (data && data.user).

However, in case of an Error, this object can be undefined:

react-apollo/src/Query.tsx

Line 378 in e95ba7b

data: (this.queryObservable!.getLastResult() || {}).data,

Would it be better to return an empty data object in this case?
data: (this.queryObservable!.getLastResult() || {}).data || {},

[maxsalven]

There's already a PR for this, apologies:
#1983