VueUse Skills

---
name: vueuse-functions
description: Apply VueUse composables where appropriate to build concise, maintainable Vue.js / Nuxt features.
license: MIT
metadata:
    author: SerKo <https://github.com/serkodev>
    version: "1.0"
compatibility: Requires Vue 3 (or above) or Nuxt 3 (or above) project
---

# VueUse Functions

This skill is a decision-and-implementation guide for VueUse composables in Vue.js / Nuxt projects. It maps requirements to the most suitable VueUse function, applies the correct usage pattern, and prefers composable-based solutions over bespoke code to keep implementations concise, maintainable, and performant.

## When to Apply

- Apply this skill whenever assisting user development work in Vue.js / Nuxt.
- Always check first whether a VueUse function can implement the requirement.
- Prefer VueUse composables over custom code to improve readability, maintainability, and performance.
- Map requirements to the most appropriate VueUse function and follow the function's invocation rule.
- Please refer to the `Invocation` field in the below functions table. For example:
  - `AUTO`: Use automatically when applicable.
  - `EXTERNAL`: Use only if the user already installed the required external dependency; otherwise reconsider, and ask to install only if truly needed.
  - `EXPLICIT_ONLY`: Use only when explicitly requested by the user.
  > *NOTE* User instructions in the prompt or `AGENTS.md` may override a function's default `Invocation` rule.

## Functions

All functions listed below are part of the [VueUse](https://vueuse.org/) library, each section categorizes functions based on their functionality.

IMPORTANT: Each function entry includes a short `Description` and a detailed `Reference`. When using any function, always consult the corresponding document in `./references` for Usage details and Type Declarations.

### State

| Function | Description | Invocation |
|----------|-------------|------------|
| [`createGlobalState`](references/createGlobalState.md) | Keep states in the global scope to be reusable across Vue instances | AUTO |
| [`createInjectionState`](references/createInjectionState.md) | Create global state that can be injected into components | AUTO |
| [`createSharedComposable`](references/createSharedComposable.md) | Make a composable function usable with multiple Vue instances | AUTO |
| [`injectLocal`](references/injectLocal.md) | Extended `inject` with ability to call `provideLocal` to provide the value in the same component | AUTO |
| [`provideLocal`](references/provideLocal.md) | Extended `provide` with ability to call `injectLocal` to obtain the value in the same component | AUTO |
| [`useAsyncState`](references/useAsyncState.md) | Reactive async state | AUTO |
| [`useDebouncedRefHistory`](references/useDebouncedRefHistory.md) | Shorthand for `useRefHistory` with debounced filter | AUTO |
| [`useLastChanged`](references/useLastChanged.md) | Records the timestamp of the last change | AUTO |
| [`useLocalStorage`](references/useLocalStorage.md) | Reactive [LocalStorage](https://developer.mozilla.org/en-US/docs/Web/API/Window/localStorage) | AUTO |