25 lines
813 B
TypeScript
25 lines
813 B
TypeScript
import { computed, toValue } from 'vue';
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import type { ComputedRef, MaybeRefOrGetter } from 'vue';
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/**
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* @name useArrayFind
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* @category Array
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* @description Reactive `Array.prototype.find`.
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*
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* @param {MaybeRefOrGetter<MaybeRefOrGetter<T>[]>} list The source array (items can be reactive)
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* @param {(element: T, index: number, array: T[]) => boolean} fn Predicate
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* @returns {ComputedRef<T | undefined>} The first matching element
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*
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* @example
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* const list = ref([1, 2, 3]);
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* const found = useArrayFind(list, n => n > 1); // 2
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*
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* @since 0.0.15
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*/
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export function useArrayFind<T>(
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list: MaybeRefOrGetter<Array<MaybeRefOrGetter<T>>>,
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fn: (element: T, index: number, array: T[]) => boolean,
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): ComputedRef<T | undefined> {
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return computed(() => toValue(list).map(i => toValue(i)).find(fn));
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}
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