fix(data-objectstack): type the exportDownload test fetch mock so its type-check passes

[os-zhuang]

packages/data-objectstack/src/exportDownload.test.ts fails tsc --noEmit on a cold cache:

src/exportDownload.test.ts(39,12): error TS2493: Tuple type '[]' of length '0' has no element at index '0'.
src/exportDownload.test.ts(40,28): error TS2345: Argument of type 'undefined' is not assignable to parameter of type 'string | URL'.
src/exportDownload.test.ts(48,12): error TS18048: 'init' is possibly 'undefined'.
… (9 total)

Root cause:vi.fn(async () => csvResponse()) infers a zero-arg signature, so fetchImpl.mock.calls[0] is typed as an empty tuple []. const [url, init] = fetchImpl.mock.calls[0] then can't index it (url/init are undefined).

Fix: type the mock like fetch — vi.fn(async (_url: string, _init: RequestInit) => csvResponse()) — so the recorded call args are [url, init]. Test-only; no runtime change.

Spotted while working on #2723 (unrelated); splitting it out as its own PR.

Verification

• turbo run type-check --filter=@object-ui/data-objectstack → 3/3 successful (deps built, then tsc), clean.
• vitest run packages/data-objectstack/src/exportDownload.test.ts → 4/4 passed.

🤖 Generated with Claude Code

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
objectui	Ignored		Jul 20, 2026 4:36am

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✅ Console Performance Budget

Metric	Value	Budget
Main entry (gzip)	28.0 KB	350 KB
Entry file	index-DDaEaUCN.js	—
Status	PASS	—

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📦 Bundle Size Report

Package	Size	Gzipped
app-shell (index.js)	8.19KB	2.96KB
app-shell (runtime-config.js)	7.42KB	2.32KB
app-shell (types.js)	0.01KB	0.04KB
app-shell (urlParams.js)	7.57KB	2.97KB
auth (AuthContext.js)	0.31KB	0.24KB
auth (AuthGuard.js)	1.17KB	0.53KB
auth (AuthProvider.js)	21.70KB	4.21KB
auth (AuthShell.js)	3.49KB	1.40KB
auth (ForgotPasswordForm.js)	12.12KB	3.41KB
auth (LoginForm.js)	17.86KB	5.29KB
auth (PreviewBanner.js)	0.90KB	0.50KB
auth (RegisterForm.js)	6.43KB	2.09KB
auth (SocialSignInButtons.js)	9.60KB	3.89KB
auth (UserMenu.js)	3.40KB	1.22KB
auth (auth-gate-events.js)	1.29KB	0.66KB
auth (authStyles.js)	5.04KB	1.72KB
auth (createAuthClient.js)	33.74KB	8.53KB
auth (createAuthenticatedFetch.js)	3.93KB	1.55KB
auth (index.js)	1.83KB	0.79KB
auth (phone-identifier.js)	1.11KB	0.66KB
auth (types.js)	0.59KB	0.35KB
auth (useAuth.js)	4.86KB	0.85KB
auth (useIsWorkspaceAdmin.js)	1.61KB	0.85KB
collaboration (CommentThread.js)	18.38KB	4.49KB
collaboration (LiveCursors.js)	3.17KB	1.27KB
collaboration (PresenceAvatars.js)	3.65KB	1.42KB
collaboration (PresenceProvider.js)	2.42KB	0.96KB
collaboration (index.js)	1.25KB	0.53KB
collaboration (useCommentSearch.js)	1.98KB	0.88KB
collaboration (useConflictResolution.js)	7.75KB	1.86KB
collaboration (useMentionNotifications.js)	1.81KB	0.68KB
collaboration (usePresence.js)	6.33KB	1.84KB
collaboration (useRealtimeSubscription.js)	7.91KB	2.01KB
components (index.js)	450.03KB	97.83KB
core (index.js)	1.86KB	0.63KB
create-plugin (index.js)	9.28KB	2.98KB
data-objectstack (index.js)	120.81KB	30.10KB
fields (index.js)	210.46KB	51.53KB
i18n (LocalizationContext.js)	1.76KB	0.96KB
i18n (currency.js)	1.22KB	0.64KB
i18n (i18n.js)	4.32KB	1.77KB
i18n (index.js)	2.46KB	0.96KB
i18n (pickLocalized.js)	1.70KB	0.83KB
i18n (provider.js)	5.37KB	1.72KB
i18n (useObjectLabel.js)	21.22KB	4.69KB
i18n (useSafeTranslation.js)	2.87KB	1.28KB
layout (index.js)	38.45KB	10.67KB
mobile (MobileProvider.js)	0.92KB	0.49KB
mobile (ResponsiveContainer.js)	0.94KB	0.38KB
mobile (breakpoints.js)	1.51KB	0.70KB
mobile (createOfflineDataSource.js)	5.61KB	1.74KB
mobile (index.js)	1.50KB	0.62KB
mobile (offlineQueue.js)	3.91KB	1.35KB
mobile (pwa.js)	0.97KB	0.49KB
mobile (serviceWorker.js)	1.48KB	0.62KB
mobile (serviceWorkerSource.js)	3.41KB	1.48KB
mobile (useBreakpoint.js)	1.54KB	0.65KB
mobile (useGesture.js)	4.42KB	1.27KB
mobile (useOfflineSync.js)	1.99KB	0.72KB
mobile (usePullToRefresh.js)	2.53KB	0.85KB
mobile (useResponsive.js)	0.71KB	0.42KB
mobile (useResponsiveConfig.js)	1.36KB	0.63KB
mobile (useSpecGesture.js)	1.77KB	0.77KB
mobile (useTouchTarget.js)	1.01KB	0.54KB
permissions (MePermissionsProvider.js)	5.90KB	2.15KB
permissions (PermissionContext.js)	0.31KB	0.25KB
permissions (PermissionGuard.js)	0.89KB	0.45KB
permissions (PermissionProvider.js)	3.46KB	1.03KB
permissions (evaluator.js)	4.00KB	1.23KB
permissions (index.js)	0.91KB	0.41KB
permissions (store.js)	0.91KB	0.42KB
permissions (useFieldPermissions.js)	1.28KB	0.52KB
permissions (usePermissions.js)	1.50KB	0.70KB
plugin-ai (index.js)	15.71KB	3.79KB
plugin-calendar (index.js)	45.12KB	12.34KB
plugin-charts (index.js)	46.31KB	13.06KB
plugin-chatbot (index.js)	179.58KB	42.81KB
plugin-dashboard (index.js)	113.58KB	28.77KB
plugin-designer (index.js)	213.43KB	42.95KB
plugin-detail (index.js)	214.92KB	52.44KB
plugin-editor (index.js)	2.46KB	1.10KB
plugin-form (index.js)	102.94KB	24.95KB
plugin-gantt (index.js)	162.24KB	39.49KB
plugin-grid (index.js)	174.50KB	46.00KB
plugin-kanban (index.js)	47.23KB	12.88KB
plugin-list (index.js)	98.22KB	23.21KB
plugin-map (index.js)	16.80KB	5.24KB
plugin-markdown (index.js)	13.65KB	4.67KB
plugin-report (index.js)	37.81KB	9.98KB
plugin-timeline (index.js)	25.37KB	7.20KB
plugin-tree (index.js)	8.36KB	2.81KB
plugin-view (index.js)	85.74KB	20.86KB
providers (DataSourceProvider.js)	0.75KB	0.39KB
providers (MetadataProvider.js)	1.37KB	0.59KB
providers (ThemeProvider.js)	1.55KB	0.67KB
providers (UploadProvider.js)	11.71KB	3.53KB
providers (index.js)	0.44KB	0.22KB
providers (types.js)	0.01KB	0.04KB
react-runtime (index.js)	3.19KB	1.38KB
react (LazyPluginLoader.js)	3.77KB	1.33KB
react (SchemaRenderer.js)	18.70KB	6.09KB
react (data-invalidation.js)	5.05KB	2.08KB
react (index.js)	0.76KB	0.42KB
sdui-parser (codegen.js)	4.09KB	1.74KB
sdui-parser (index.js)	2.16KB	0.94KB
sdui-parser (parse.js)	10.04KB	2.82KB
sdui-parser (types.js)	0.29KB	0.24KB
sdui-parser (validate.js)	4.69KB	1.48KB
types (ai.js)	0.20KB	0.17KB
types (api-types.js)	0.20KB	0.18KB
types (app.js)	2.87KB	0.99KB
types (base.js)	0.20KB	0.18KB
types (blocks.js)	0.20KB	0.18KB
types (complex.js)	0.20KB	0.18KB
types (crud.js)	0.20KB	0.18KB
types (data-display.js)	0.20KB	0.18KB
types (data-protocol.js)	0.20KB	0.19KB
types (data.js)	0.20KB	0.18KB
types (designer.js)	0.77KB	0.41KB
types (disclosure.js)	0.20KB	0.18KB
types (feedback.js)	0.20KB	0.18KB
types (field-types.js)	0.20KB	0.18KB
types (form.js)	0.20KB	0.18KB
types (index.js)	2.02KB	0.95KB
types (layout.js)	0.20KB	0.18KB
types (managed-by.js)	0.17KB	0.17KB
types (mobile.js)	0.20KB	0.18KB
types (navigation.js)	0.20KB	0.18KB
types (objectql.js)	0.20KB	0.18KB
types (overlay.js)	0.20KB	0.18KB
types (permissions.js)	0.20KB	0.18KB
types (plugin-scope.js)	0.20KB	0.18KB
types (record-components.js)	0.20KB	0.19KB
types (record-semantics.js)	1.28KB	0.67KB
types (registry.js)	0.20KB	0.18KB
types (reports.js)	0.20KB	0.18KB
types (spec-report.js)	5.26KB	1.96KB
types (system-fields.js)	2.39KB	1.17KB
types (theme.js)	0.20KB	0.18KB
types (ui-action.js)	0.75KB	0.46KB
types (views.js)	0.20KB	0.18KB
types (widget.js)	0.20KB	0.18KB

Size Limits

• ✅ Core packages should be < 50KB gzipped
• ✅ Component packages should be < 100KB gzipped
• ⚠️ Plugin packages should be < 150KB gzipped