25 lines
853 B
JavaScript
25 lines
853 B
JavaScript
var baseIteratee = require('./_baseIteratee'),
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isArrayLike = require('./isArrayLike'),
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keys = require('./keys');
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/**
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* Creates a `_.find` or `_.findLast` function.
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*
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* @private
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* @param {Function} findIndexFunc The function to find the collection index.
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* @returns {Function} Returns the new find function.
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*/
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function createFind(findIndexFunc) {
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return function(collection, predicate, fromIndex) {
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var iterable = Object(collection);
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if (!isArrayLike(collection)) {
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var iteratee = baseIteratee(predicate, 3);
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collection = keys(collection);
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predicate = function(key) { return iteratee(iterable[key], key, iterable); };
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}
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var index = findIndexFunc(collection, predicate, fromIndex);
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return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
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};
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}
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module.exports = createFind;
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