'use strict'; | |
require('../../modules/es.map'); | |
require('../../modules/esnext.map.key-by'); | |
var path = require('../../internals/path'); | |
var Map = path.Map; | |
var mapKeyBy = Map.keyBy; | |
module.exports = function keyBy(source, iterable, keyDerivative) { | |
return mapKeyBy.call(typeof this === 'function' ? this : Map, source, iterable, keyDerivative); | |
}; |