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 v4.0.3, generated at 2026-09-25.

Core References

Topic	Description	Reference
Stores	Defining stores, state, getters, actions, storeToRefs, subscriptions	core-stores

Features

Extensibility

Topic	Description	Reference
Plugins	Extend stores with custom properties, state, and behavior	features-plugins

Composability

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

Best Practices

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

Advanced

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

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