---
name: Pinia
slug: pinia
category: Frontend
description: Pinia is the 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.
github: "https://github.com/antfu/skills/tree/main/skills/pinia"
language: TypeScript
stars: 5760
forks: 317
install: "npx degit https://github.com/antfu/skills/tree/main/skills/pinia ~/.claude/skills/pinia"
installs_to: ~/.claude/skills/pinia
source_path: skills/pinia/SKILL.md
collection_size: 19
category_size: 567
collection_url: "https://dirskills.com/collections/antfu/skills"
added: 2026-08-15T06:52:34.164Z
last_synced: 2026-08-15T06:52:34.164Z
canonical_url: "https://dirskills.com/skills/pinia"
---

# Pinia

Pinia is the 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.

**Install:**

```bash
npx degit https://github.com/antfu/skills/tree/main/skills/pinia ~/.claude/skills/pinia
```

## README

# Pinia

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.

## Core References

| Topic | Description | Reference |
|-------|-------------|-----------|
| Stores | Defining stores, state, getters, actions, storeToRefs, subscriptions | [core-stores](references/core-stores.md) |

## Features

### Extensibility

| Topic | Description | Reference |
|-------|-------------|-----------|
| Plugins | Extend stores with custom properties, state, and behavior | [features-plugins](references/features-plugins.md) |

### Composability

| Topic | Description | Reference |
|-------|-------------|-----------|
| Composables | Using Vue composables within stores (VueUse, etc.) | [features-composables](references/features-composables.md) |
| Composing Stores | Store-to-store communication, avoiding circular dependencies | [features-composing-stores](references/features-composing-stores.md) |

## Best Practices

| Topic | Description | Reference |
|-------|-------------|-----------|
| Testing | Unit testing with @pinia/testing, mocking, stubbing | [best-practices-testing](references/best-practices-testing.md) |
| Outside Components | Using stores in navigation guards, plugins, middlewares | [best-practices-outside-component](references/best-practices-outside-component.md) |

## Advanced

| Topic | Description | Reference |
|-------|-------------|-----------|
| SSR | Server-side rendering, state hydration | [advanced-ssr](references/advanced-ssr.md) |
| Nuxt | Nuxt integration, auto-imports, SSR best practices | [advanced-nuxt](references/advanced-nuxt.md) |
| HMR | Hot module replacement for development | [advanced-hmr](references/advanced-hmr.md) |

## Key Recommendations

- **Prefer Setup Stores** for complex logic, composables, and watchers
- **Use `storeToRefs()`** when destructuring state/getters to preserve reactivity
- **Actions can be destructured directly** - they're bound to the store
- **Call stores inside functions** not at module scope, especially for SSR
- **Add HMR support** to each store for better development experience
- **Use `@pinia/testing`** for component tests with mocked stores