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37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
6 years ago
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var baseAssignValue = require('./_baseAssignValue'),
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baseForOwn = require('./_baseForOwn'),
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baseIteratee = require('./_baseIteratee');
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/**
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* The opposite of `_.mapValues`; this method creates an object with the
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* same values as `object` and keys generated by running each own enumerable
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* string keyed property of `object` thru `iteratee`. The iteratee is invoked
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* with three arguments: (value, key, object).
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*
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* @static
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* @memberOf _
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* @since 3.8.0
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* @category Object
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* @param {Object} object The object to iterate over.
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* @param {Function} [iteratee=_.identity] The function invoked per iteration.
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* @returns {Object} Returns the new mapped object.
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* @see _.mapValues
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* @example
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*
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* _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
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* return key + value;
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* });
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* // => { 'a1': 1, 'b2': 2 }
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*/
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function mapKeys(object, iteratee) {
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var result = {};
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iteratee = baseIteratee(iteratee, 3);
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baseForOwn(object, function(value, key, object) {
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baseAssignValue(result, iteratee(value, key, object), value);
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});
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return result;
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}
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module.exports = mapKeys;
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