` | `Component` subclass with a built-in shallow-compare `shouldComponentUpdate` |\n| `ErrorInfo` | Second argument to `componentDidCatch` — `{ componentStack: string }` |\n| `FunctionComponent` | Function component signature |\n| `ElementType` | String tag, function component, or class component constructor |\n| `LazyOptions` | Options for `Anu.lazy` — `{ fallback?: AnuElement \\| null; onError?: (error: unknown) => void }` |\n| `ContextValue` | Context value passed to a `Consumer` render-prop: `{ value: Partial; defaultContext: { value: T } }` |\n| `ConsumerProps` | Props for a typed context `Consumer` — `children` is the render-prop `(ctx: ContextValue) => AnuElement \\| null` |\n| `Store` | Store instance returned by `Anu.store.createStore` |\n| `Reducer` | Reducer function signature |\n| `Middleware` | Middleware function signature |\n| `Dispatch` | Dispatch function signature |\n| `Action` | Base action type `{ type: string; [key: string]: any }` |\n| `ThunkAction` | Thunk action `(dispatch, getState) => any` |\n| `SelectorFn` | Selector function signature for `createSelector` |\n| `CreateSelectorFn` | Overloaded interface for `Anu.store.createSelector` — enables full type inference on transformation parameters |\n| `ApiSuccessResponse` | Successful HTTP response `{ status: number; response: T \\| null }` |\n| `ApiErrorResponse` | Error HTTP response `{ status: number; response: null }` |\n| `FormatNumberOptions` | Options for `Anu.Intl.formatNumber` — `Intl.NumberFormatOptions` plus an optional `locale` |\n| `ParseNumberOptions` | Options for `Anu.Intl.parseNumber` — `{ locale?: string }` |\n| `RouteMatch` | Route-match result `{ path, url, isExact, params }` — passed to a `Route`'s `component`/`render`, returned by `Anu.History.matchPath` |\n| `RouterMode` | Router mode union — `'history' \\| 'hash'` |\n| `RouterConfig` | Router configuration `{ mode: RouterMode; basename: string }` — returned (read-only) by `Anu.History.getConfig` |\n| `HistoryListener` | Listener signature for `Anu.History.subscribe` — `(path: string) => void` |\n\n#### Library development scripts\n\n```bash\nnpm run clean # Delete dist/ entirely\nnpm run build # Clean, compile TypeScript sources to dist/, and emit .d.ts files\nnpm run typecheck # Type-check without emitting any output\nnpm run lint # Run ESLint on all source files\nnpm run format # Format all source files with Prettier\nnpm test # Run the Anu Testing Library test suite with Jest\nnpm run test:watch # Run Jest in interactive watch mode\nnpm run test:coverage # Run Jest and generate a coverage report\n```\n\n
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\n\nTesting
\n\nANUVerzum ships a built-in testing library — **Anu Testing Library (ATL)** — importable as `anu-verzum/testing`. It mirrors the philosophy of Testing Library: query the DOM the way a user would (by role, text, label), fire events, and assert on real output — no component internals, no custom matchers.\n\n```typescript\nimport Anu from 'anu-verzum';\nimport { render, fireEvent } from 'anu-verzum/testing';\n\nconst { getByText, getByRole } = render();\nfireEvent.click(getByRole('button'));\nexpect(getByText('Count: 1')).toBeDefined();\n```\n\nIf TypeScript reports that `describe`, `test`, or `expect` are not found, your `tsconfig.json` likely has an explicit `\"types\"` list. Add `\"jest\"` to it — and `\"node\"` if tests reference `process.env`:\n\n```json\n{ \"compilerOptions\": { \"types\": [\"node\", \"jest\"] } }\n```\n\nSee **[USERS_MANUAL.md — Testing](./documentation/USERS_MANUAL.md#testing)** for the full API reference and usage guide.\n\n
\n
\n\nDocumentation
\n\nFull usage documentation, API reference, and code examples:\n\n**[USERS_MANUAL.md](./documentation/USERS_MANUAL.md)**\n\nArchitecture overview, module deep-dives, and implementation details for contributors:\n\n**[TECHNICAL_DOCUMENTATION.md](./documentation/TECHNICAL_DOCUMENTATION.md)**\n\n
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