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>
79 lines
1.5 KiB
Markdown
79 lines
1.5 KiB
Markdown
---
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category: Elements
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---
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# useElementSize
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Reactive size of an HTML element. [ResizeObserver MDN](https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver)
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## Usage
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```vue
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<script setup lang="ts">
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import { useElementSize } from '@vueuse/core'
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import { useTemplateRef } from 'vue'
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const el = useTemplateRef('el')
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const { width, height } = useElementSize(el)
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</script>
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<template>
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<div ref="el">
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Height: {{ height }}
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Width: {{ width }}
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</div>
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</template>
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```
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## Component Usage
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```vue
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<template>
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<UseElementSize v-slot="{ width, height }">
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Width: {{ width }} Height: {{ height }}
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</UseElementSize>
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</template>
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```
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## Directive Usage
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```vue
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<script setup lang="ts">
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import { vElementSize } from '@vueuse/components'
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function onResize({ width, height }: { width: number, height: number }) {
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console.log(width, height)
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}
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</script>
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<template>
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<textarea v-element-size="onResize" />
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<!-- with options -->
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<textarea v-element-size="[onResize, { width: 100, height: 100 }, { box: 'content-box' }]" />
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</template>
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```
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## Type Declarations
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```ts
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export interface ElementSize {
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width: number
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height: number
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}
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/**
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* Reactive size of an HTML element.
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*
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* @see https://vueuse.org/useElementSize
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*/
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export declare function useElementSize(
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target: MaybeComputedElementRef,
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initialSize?: ElementSize,
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options?: UseResizeObserverOptions,
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): {
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width: ShallowRef<number, number>
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height: ShallowRef<number, number>
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stop: () => void
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}
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export type UseElementSizeReturn = ReturnType<typeof useElementSize>
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```
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