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>
32 lines
633 B
Markdown
32 lines
633 B
Markdown
---
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category: Utilities
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---
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# isDefined
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Non-nullish checking type guard for Ref.
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## Usage
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```ts
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import { isDefined } from '@vueuse/core'
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const example = ref(Math.random() ? 'example' : undefined) // Ref<string | undefined>
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if (isDefined(example))
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example // Ref<string>
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```
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## Type Declarations
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```ts
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export type IsDefinedReturn = boolean
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export declare function isDefined<T>(
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v: ComputedRef<T>,
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): v is ComputedRef<Exclude<T, null | undefined>>
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export declare function isDefined<T>(
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v: Ref<T>,
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): v is Ref<Exclude<T, null | undefined>>
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export declare function isDefined<T>(v: T): v is Exclude<T, null | undefined>
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```
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