Pinia official Vue state management library, type-safe and extensible. Use when defining stores, working with state/getters/actions, or implementing store patterns in Vue apps.
Pinia is the official state management library for Vue, designed to be intuitive and type-safe. It supports both Options API and Composition API styles, with first-class TypeScript support and devtools integration.
The skill is based on Pinia v3.0.4, generated at 2026-01-28.
| Topic | Description | Reference |
|---|---|---|
| Stores | Defining stores, state, getters, actions, storeToRefs, subscriptions | core-stores |
| Topic | Description | Reference |
|---|
| Plugins | Extend stores with custom properties, state, and behavior | features-plugins |
| Topic | Description | Reference |
|---|---|---|
| Composables | Using Vue composables within stores (VueUse, etc.) | features-composables |
| Composing Stores | Store-to-store communication, avoiding circular dependencies | features-composing-stores |
| Topic | Description | Reference |
|---|---|---|
| Testing | Unit testing with @pinia/testing, mocking, stubbing | best-practices-testing |
| Outside Components | Using stores in navigation guards, plugins, middlewares | best-practices-outside-component |
| Topic | Description | Reference |
|---|---|---|
| SSR | Server-side rendering, state hydration | advanced-ssr |
| Nuxt | Nuxt integration, auto-imports, SSR best practices | advanced-nuxt |
| HMR | Hot module replacement for development | advanced-hmr |
storeToRefs() when destructuring state/getters to preserve reactivity@pinia/testing for component tests with mocked stores