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26 lines
1.0 KiB
TypeScript
26 lines
1.0 KiB
TypeScript
import { helper } from '@ember/component/helper';
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import { assert } from '@ember/debug';
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import { isArray } from '@ember/array';
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/**
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* Recreates the Array.find() function where the first value in the array will be returned that strictly
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* matches the given value or passes the predicate function's boolean test
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* @param {Array<T>} list - the list to be traversed
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* @param {primitive value or (item: T) => boolean} valueOrPredicate - the item to test against to find
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* @returns {T}
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*/
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// TODO: This helper should be moved to nacho utils whenever we can work on importing the open source version
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// back into wherehows
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export function findInArray<T>([list, valueOrPredicate]: [
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Array<T>,
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number | string | boolean | ((item: T) => boolean)
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]): T | undefined {
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assert('expected first parameter to find-in-array helper to be an array', isArray(list));
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const predicate =
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typeof valueOrPredicate === 'function' ? valueOrPredicate : (item: unknown) => item === valueOrPredicate;
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return list.find(predicate);
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}
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export default helper(findInArray);
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