f5792c40be
Pulled ALL skills from 15 source repositories: - anthropics/skills: 16 (docs, design, MCP, testing) - obra/superpowers: 14 (TDD, debugging, agents, planning) - coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth) - better-auth/skills: 5 (auth patterns) - vercel-labs/agent-skills: 5 (React, design, Vercel) - antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo) - Plus 13 individual skills from various repos Mosaic Stack is not limited to coding — the Orchestrator and subagents serve coding, business, design, marketing, writing, logistics, analysis, and more. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
41 lines
712 B
Markdown
41 lines
712 B
Markdown
---
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category: Utilities
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---
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# usePrevious
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Holds the previous value of a ref.
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## Usage
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```ts
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import { usePrevious } from '@vueuse/core'
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import { shallowRef } from 'vue'
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const counter = shallowRef('Hello')
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const previous = usePrevious(counter)
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console.log(previous.value) // undefined
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counter.value = 'World'
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console.log(previous.value) // Hello
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```
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## Type Declarations
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```ts
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/**
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* Holds the previous value of a ref.
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*
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* @see {@link https://vueuse.org/usePrevious}
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*/
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export declare function usePrevious<T>(
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value: MaybeRefOrGetter<T>,
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): Readonly<ShallowRef<T | undefined>>
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export declare function usePrevious<T>(
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value: MaybeRefOrGetter<T>,
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initialValue: T,
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): Readonly<ShallowRef<T>>
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```
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