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37 lines
1.0 KiB
37 lines
1.0 KiB
var arrayMap = require('./_arrayMap'), |
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baseIteratee = require('./_baseIteratee'), |
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basePickBy = require('./_basePickBy'), |
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getAllKeysIn = require('./_getAllKeysIn'); |
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/** |
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* Creates an object composed of the `object` properties `predicate` returns |
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* truthy for. The predicate is invoked with two arguments: (value, key). |
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* |
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* @static |
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* @memberOf _ |
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* @since 4.0.0 |
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* @category Object |
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* @param {Object} object The source object. |
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* @param {Function} [predicate=_.identity] The function invoked per property. |
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* @returns {Object} Returns the new object. |
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* @example |
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* |
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* var object = { 'a': 1, 'b': '2', 'c': 3 }; |
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* |
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* _.pickBy(object, _.isNumber); |
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* // => { 'a': 1, 'c': 3 } |
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*/ |
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function pickBy(object, predicate) { |
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if (object == null) { |
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return {}; |
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} |
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var props = arrayMap(getAllKeysIn(object), function(prop) { |
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return [prop]; |
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}); |
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predicate = baseIteratee(predicate); |
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return basePickBy(object, props, function(value, path) { |
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return predicate(value, path[0]); |
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}); |
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} |
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module.exports = pickBy;
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