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25 lines
853 B
25 lines
853 B
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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