4a3ce4cc1d
Add comprehensive reference documentation for: - Vitest: environments, projects/workspaces, type testing, vi utilities - Pinia: HMR, Nuxt integration, SSR setup - Vue: built-in components (Transition, Teleport, Suspense, KeepAlive) and advanced directives
53 lines
1.1 KiB
Markdown
53 lines
1.1 KiB
Markdown
---
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category: Array
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---
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# useArrayFindLast
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Reactive `Array.findLast`.
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## Usage
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```ts
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import { useArrayFindLast } from '@vueuse/core'
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const list = [ref(1), ref(-1), ref(2)]
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const positive = useArrayFindLast(list, val => val > 0)
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// positive.value: 2
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```
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### Use with reactive array
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```ts
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import { useArrayFindLast } from '@vueuse/core'
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const list = reactive([-1, -2])
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const positive = useArrayFindLast(list, val => val > 0)
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// positive.value: undefined
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list.push(10)
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// positive.value: 10
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list.push(5)
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// positive.value: 5
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```
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## Type Declarations
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```ts
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export type UseArrayFindLastReturn<T = any> = ComputedRef<T | undefined>
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/**
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* Reactive `Array.findLast`
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*
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* @see https://vueuse.org/useArrayFindLast
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* @param list - the array was called upon.
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* @param fn - a function to test each element.
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*
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* @returns the last element in the array that satisfies the provided testing function. Otherwise, undefined is returned.
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*
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* @__NO_SIDE_EFFECTS__
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*/
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export declare function useArrayFindLast<T>(
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list: MaybeRefOrGetter<MaybeRefOrGetter<T>[]>,
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fn: (element: T, index: number, array: MaybeRefOrGetter<T>[]) => boolean,
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): UseArrayFindLastReturn<T>
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```
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