Node 26 defines its own `localStorage` accessor on the global object,
which returns `undefined` unless the process was started with
`--localstorage-file` (hence the "localStorage is not available because
--localstorage-file was not provided" warning now printed by every
worker). In the jsdom environment `globalThis` IS the window, so that
accessor shadows jsdom's Storage and every `localStorage.getItem(...)` in
a test throws "Cannot read properties of undefined".
CI caught this on the Node 26 bump: `check:test:ui` failed with 22
errors across session.test.ts, terminals.test.ts, model-settings and
onboarding stores — all storage-backed. Reproduced locally against
nodejs_26 (12 failures in src/store/session.test.ts alone) before fixing.
vitest.setup.ts now installs a real in-memory Storage on both globalThis
and window when the global resolves to undefined, before any test module
reads it. Guarded on `typeof === 'undefined'` so Node < 26 and any future
runtime that provides a working Storage keep jsdom's own implementation.
Verified under nodejs_26: the full `--project ui` lane is 378 files /
3268 tests green (was 22 failures).
findBy*/waitFor default to a 1000ms deadline, which is too tight for
async-heavy settings panels (radix menus + refetch chains) when the full
suite runs under xdist CPU contention in CI. toolset-config-panel.test.tsx
has reddened unrelated PRs multiple times with `Unable to find ...` timeouts
that pass on re-run — the textbook contention flake.
Bump asyncUtilTimeout to 5000ms in the shared ui setup. Success still
resolves the instant the node appears; the wider deadline only absorbs a
starved runner, so happy-path speed is unchanged and only genuine failures
wait longer.
Add vitest.setup.ts with IS_REACT_ACT_ENVIRONMENT=true + auto-cleanup,
and wrap render()/fireEvent() calls in act() across 8 test files:
- provider-config-panel.test.tsx: wrap renderPanel + fireEvent in act
- providers-settings.test.tsx: wrap renderProvidersSettings + fireEvent
in act
- use-prompt-actions/index.test.tsx: add actRender helper, wrap all 38
render
calls, wrap Harness handle methods (submitText/cancelRun/steerPrompt/
restoreToMessage) in act at the onReady callback level
- attachments.test.tsx: make renderWithI18n async + wrap in act
- skills/index.test.tsx: make renderSkills async + wrap fireEvent in act
- messaging/index.test.tsx: make renderMessaging async + wrap fireEvent
in act
- gateway-connecting-overlay.test.tsx: wrap all render/rerender in act
- preview-pane.test.tsx: wrap render calls in act, make tests async
Reduces act warnings from 44 to 4 (remaining are fake-timer + pre-render
store mutation edge cases). All 146 test files / 1180 tests still pass.
ethernet
brooklyn!