Use `react-sticky` to implement sticky date separators. This will pin a date separator to the top of the timeline panel when the separator scrolls out of the top of the view.
A known issue of this is that the spinner, which is in line with event tiles in the timeline, will appear to push the stuck date separator down. In reality the first date separator after the spinner is in line with event tiles and is not stuck because the spinner forces the timeline to be scrolled slightly further down than it would be otherwise. But also, date separators in the timeline (not "stuck") have a greater height.
Ideally the date separator would be suppressed whilst back paginating, but this will cause the stuck separator to flicker on and off. This is why the suppression has been removed.
- Add "logcapture" reporter to capture logs only for failed tests
- Add "spec" reporter to show each test status individually
- Add "summary" reporter to show the total number of successful/failed tests
It turns out that the assertion made in
https://github.com/matrix-org/matrix-react-sdk/pull/1213 about `async`
functions returning bluebird promises was only correct when babel used an
inline version of the `asyncToGenerator` helper; in react-sdk we are using
`babel-transform-runtime` which means that we use a separate
`babel-runtime/helpers/asyncToGenerator`, which returns a native (or core-js)
Promise.
This meant that we were still in the situation where some methods returned
native Promises, and some bluebird ones, which is exactly the situation I
wanted to resolve by switching to bluebird in the first place: in short,
unless/until we get rid of all code which assumes Promises have a `done` method
etc, we need to make sure that everything returns a bluebird promise.
(Aside: there was debate over whether in the long term we should be trying to
wean ourselves off bluebird promises by assuming all promises are native. The
conclusion was that the complexity hit involved in doing so outweighed any
benefit of a potential future migration away from bluebird).
David Baker