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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>
107 lines
2.0 KiB
Markdown
107 lines
2.0 KiB
Markdown
---
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category: Reactivity
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---
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# reactivePick
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Reactively pick fields from a reactive object.
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## Usage
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### Basic Usage
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```ts
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import { reactivePick } from '@vueuse/core'
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const obj = reactive({
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x: 0,
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y: 0,
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elementX: 0,
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elementY: 0,
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})
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const picked = reactivePick(obj, 'x', 'elementX') // { x: number, elementX: number }
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```
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### Predicate Usage
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```ts
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import { reactivePick } from '@vueuse/core'
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const source = reactive({
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foo: 'foo',
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bar: 'bar',
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baz: 'baz',
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qux: true,
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})
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const state = reactivePick(source, (value, key) => key !== 'bar' && value !== true)
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// { foo: string, baz: string }
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source.qux = false
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// { foo: string, baz: string, qux: boolean }
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```
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### Scenarios
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#### Selectively passing props to child
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```vue
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<script setup lang="ts">
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import { reactivePick } from '@vueuse/core'
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const props = defineProps<{
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value: string
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color?: string
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font?: string
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}>()
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const childProps = reactivePick(props, 'color', 'font')
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</script>
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<template>
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<div>
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<!-- only passes "color" and "font" props to child -->
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<ChildComp v-bind="childProps" />
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</div>
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</template>
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```
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#### Selectively wrap reactive object
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Instead of doing this
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```ts
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import { useElementBounding } from '@vueuse/core'
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import { reactive } from 'vue'
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const { height, width } = useElementBounding() // object of refs
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const size = reactive({ height, width })
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```
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Now we can just have this
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```ts
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import { reactivePick, useElementBounding } from '@vueuse/core'
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const size = reactivePick(useElementBounding(), 'height', 'width')
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```
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## Type Declarations
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```ts
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export type ReactivePickReturn<T extends object, K extends keyof T> = {
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[S in K]: UnwrapRef<T[S]>
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}
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export type ReactivePickPredicate<T> = (
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value: T[keyof T],
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key: keyof T,
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) => boolean
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export declare function reactivePick<T extends object, K extends keyof T>(
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obj: T,
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...keys: (K | K[])[]
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): ReactivePickReturn<T, K>
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export declare function reactivePick<T extends object>(
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obj: T,
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predicate: ReactivePickPredicate<T>,
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): ReactivePickReturn<T, keyof T>
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```
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