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Vue frontend — components, Vitest, generated API client, apiCallWithLoading, DaisyUI. Read this first for any frontend work. Use when working on the Vue frontend.

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nerds-odd-e/doughnut50 stars(GitHub 50 + cccskills 0)

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Review the instructions the agent will receive before you install.

Frontend

Vue 3 + TypeScript in frontend/src/. Tests in frontend/tests/. Import the backend client from @generated/donut-backend-api/sdk.gen.

Matching frontend-component, frontend-testing, frontend-api, and frontend-storybook skills attach via paths when those files are in context — do not fetch them up front. Lint: linting_formating skill.

Commands

CURSOR_DEV=true nix develop -c pnpm frontend:test

Spec paths are relative to frontend/. Do not pass -- before the path (Vitest skips file filtering). Prefer the full frontend unit suite; a single file only while iterating on that file.

Always run frontend unit tests headlessly. The shared Vitest config keeps Chromium headless and disables automatic browser opening for regular, direct, UI, and watch runs. Agents must not override this with --browser.headless=false or --open unless the user explicitly requests a visible browser.

Frontend proof

frontend:test runs Vitest only; frontend/vitest.config.ts disables typechecking there for speed. Passing behavioral tests alone is incomplete frontend proof: before accepting a frontend change, also require these typechecks to pass against the same working-tree content, including generated API types:

CURSOR_DEV=true nix develop -c pnpm -C frontend exec vue-tsc --noEmit
CURSOR_DEV=true nix develop -c pnpm -C frontend exec tsc --noEmit

The build that CI runs (pnpm -C frontend build) checks with both. Plain tsc types every *.vue import through frontend/tests/shims-vue.d.ts, so it sees no exposed component members: a test reaches an exposed method through a helper that casts wrapper.vm structurally, never through wrapper.vm.<method> or InstanceType<typeof Component>.

Reuse existing typecheck evidence from a lint or build run on identical content instead of repeating it. This requirement applies at proof acceptance, not to every focused Vitest run while iterating on one file.

Components

  • <script setup lang="ts">. PascalCase .vue files; tests ComponentName.spec.ts.
  • DaisyUI uses the daisy- prefix (daisy-btn, daisy-card). Unprefixed Tailwind utilities. No Bootstrap. Scoped SCSS. Lucide via @lucide/vue (currentColor, :size or Tailwind size-*).
  • Derived state: computed, not a ref that mirrors props/store. ref only for owned mutable state (input, toggles).
  • Modals: Modal from @/components/commons/Modal.vue. In tests, query document.querySelector("dialog").
  • Tracked frontend/components.d.ts is regenerated by the Vite build, not by tests. After adding or deleting a component, run CURSOR_DEV=true nix develop -c pnpm -C frontend exec vite build --emptyOutDir and commit its change.
  • Routing: name and params (helpers such as noteShowLocation); href only via noteShowHref (compiled from the named location). ADR 0005.

API

User actions: apiCallWithLoading(() => Controller.method(...)) from @/managedApi/clientSetup. Wrapped { data, error, request, response }. Check !error before using data. Silent refresh: call the SDK directly (no loading bar or error toast).

{ blockUi: true } for a whole-UI blocker. { blockUi: true, cancelable: true } only for allowlisted read-only sites gated by frontend/tests/managedApi/cancelableAllowlist.spec.ts. Do not opt mutations into cancelable. Do not add component-local LoadingModal refs.

Loading UI that means unfinished work marks data-app-busy (LoadingThinBar, ContentLoader, LoadingModal). E2E: waitUntilAppIsNotBusy(). Validation 400: toOpenApiError(error).

Tests

Drive the mounted component. Mock only the backend HTTP API with mockSdkService(Controller, "method", payload) from @tests/helpers. Payloads: donut-test-fixtures/makeMe. No getByRole (slow). Prefer render() from Testing Library. Vitest browser mode; do not use jsdom.

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