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x/lodash/mapKeys.js

A modern JavaScript utility library delivering modularity, performance, & extras.
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import baseAssignValue from './_baseAssignValue.js';import baseForOwn from './_baseForOwn.js';import baseIteratee from './_baseIteratee.js';
/** * The opposite of `_.mapValues`; this method creates an object with the * same values as `object` and keys generated by running each own enumerable * string keyed property of `object` thru `iteratee`. The iteratee is invoked * with three arguments: (value, key, object). * * @static * @memberOf _ * @since 3.8.0 * @category Object * @param {Object} object The object to iterate over. * @param {Function} [iteratee=_.identity] The function invoked per iteration. * @returns {Object} Returns the new mapped object. * @see _.mapValues * @example * * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) { * return key + value; * }); * // => { 'a1': 1, 'b2': 2 } */function mapKeys(object, iteratee) { var result = {}; iteratee = baseIteratee(iteratee, 3);
baseForOwn(object, function(value, key, object) { baseAssignValue(result, iteratee(value, key, object), value); }); return result;}
export default mapKeys;