RENDER / REPAIRREACT 19.2 · TYPESCRIPT
0 XP REPAIR PROTOCOL
APPRENTICE
SECTOR 01 / MISSION 001

Wake the reactor.

State, identity, and the render cycle

100 XP
LIVE REACT REPAIR
useStatesnapshotsupdate queues
Before you repair About 6 min
  • Use useState and snapshots in a working repair.
  • Verify 4 behaviors, including “Further updates keep accumulating”.

Engineer’s notes

Read the mission brief and concept notes

The reactor needs three energy pulses per ignition. Repair the queued updates so every pulse counts. Keep the button and its energy readout.

Every render sees a snapshot of state. Multiple replacements based on that same snapshot collapse to the same value. Updater functions receive the result of the previous queued update.

From the flight manual

useStateState as a SnapshotQueueing a Series of State UpdatesOverviewOfficial React documentation · checked 7 Sep 2026