ReadonlybackGoes back, as the system back does: closes this screen and answers the screen below it, typed as the screens that can open this one.
ReadonlychangeDone: sets the participant's nickname in the thread; answers the change.
ReadonlycheckpointTakes a checkpoint of the process with this screen on top: what a fresh
process needs to continue from it (restoreCheckpoint), the stack below
included, without opening any screen again.
ReadonlydataWhat the screen shows: its data, as its data schema types it.
Readonlythread_v2_id: stringThe thread the nickname is set in.
Readonlyuser_id: stringThe person whose nickname is edited: their user id.
ReadonlyidWhich screen this is: its id in the screen catalog (an item's: its item id).
ReadonlykindWhat kind of thing the screen is: a screen, a tab, an inner tab, a feed or an item.
ReadonlyoriginThe handle this one was opened from: the screen (or the item of its list)
whose call opened it, typed as what can open this screen; undefined for a
launch's or a tab's root.
ReadonlypipePasses the handle through the functions you give, left to right: handle.pipe(f, g) is g(f(handle)).
ReadonlyrawThe answers this visit received from the server, before any decoding; empty on a handle a checkpoint rebuilt.
ReadonlytoThe handle as JSON: its data.
Readonlyuser_The person whose nickname is edited: their user id.
The handle of DirectThreadNicknameChangeScreen: what you hold while the screen is open — its
data.