Small util functions for Frameworkstein

fetchComponentData

Call Component.fetchData on a list of React Components.

Used to tie in the data loading story for Frameworkstein.

This fetchData method of each container is called whenever it's mounted.

Used in fl-server-utils and fl-react-utils

observeStore

Added observeStore, a function that will call a callback whenever a selected piece of a redux store changes.

Useful for e.g. adding an access token header to all requests after a user logs in:

observeStore(store, store => store.auth.get('accessToken'), accessToken => {
  requestModifier.setHeader({authorization: `Bearer ${accessToken}`})
})