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							59 lines
						
					
					
						
							1.7 KiB
						
					
					
				
			
		
		
	
	
							59 lines
						
					
					
						
							1.7 KiB
						
					
					
				var baseFindIndex = require('./_baseFindIndex'), | 
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    baseIteratee = require('./_baseIteratee'), | 
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    toInteger = require('./toInteger'); | 
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 | 
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/* Built-in method references for those with the same name as other `lodash` methods. */ | 
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var nativeMax = Math.max, | 
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    nativeMin = Math.min; | 
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 | 
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/** | 
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 * This method is like `_.findIndex` except that it iterates over elements | 
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 * of `collection` from right to left. | 
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 * | 
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 * @static | 
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 * @memberOf _ | 
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 * @since 2.0.0 | 
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 * @category Array | 
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 * @param {Array} array The array to inspect. | 
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 * @param {Function} [predicate=_.identity] The function invoked per iteration. | 
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 * @param {number} [fromIndex=array.length-1] The index to search from. | 
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 * @returns {number} Returns the index of the found element, else `-1`. | 
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 * @example | 
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 * | 
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 * var users = [ | 
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 *   { 'user': 'barney',  'active': true }, | 
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 *   { 'user': 'fred',    'active': false }, | 
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 *   { 'user': 'pebbles', 'active': false } | 
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 * ]; | 
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 * | 
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 * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; }); | 
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 * // => 2 | 
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 * | 
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 * // The `_.matches` iteratee shorthand. | 
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 * _.findLastIndex(users, { 'user': 'barney', 'active': true }); | 
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 * // => 0 | 
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 * | 
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 * // The `_.matchesProperty` iteratee shorthand. | 
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 * _.findLastIndex(users, ['active', false]); | 
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 * // => 2 | 
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 * | 
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 * // The `_.property` iteratee shorthand. | 
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 * _.findLastIndex(users, 'active'); | 
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 * // => 0 | 
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 */ | 
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function findLastIndex(array, predicate, fromIndex) { | 
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  var length = array == null ? 0 : array.length; | 
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  if (!length) { | 
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    return -1; | 
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  } | 
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  var index = length - 1; | 
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  if (fromIndex !== undefined) { | 
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    index = toInteger(fromIndex); | 
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    index = fromIndex < 0 | 
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      ? nativeMax(length + index, 0) | 
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      : nativeMin(index, length - 1); | 
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  } | 
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  return baseFindIndex(array, baseIteratee(predicate, 3), index, true); | 
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} | 
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 | 
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module.exports = findLastIndex;
 | 
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 |