'use strict';
var $ = require('../internals/export');
+var call = require('../internals/function-call');
var iterate = require('../internals/iterate');
-var aFunction = require('../internals/a-function');
+var aCallable = require('../internals/a-callable');
// `Map.keyBy` method
// https://github.com/tc39/proposal-collection-methods
$({ target: 'Map', stat: true }, {
keyBy: function keyBy(iterable, keyDerivative) {
var newMap = new this();
- aFunction(keyDerivative);
- var setter = aFunction(newMap.set);
+ aCallable(keyDerivative);
+ var setter = aCallable(newMap.set);
iterate(iterable, function (element) {
- setter.call(newMap, keyDerivative(element), element);
+ call(setter, newMap, keyDerivative(element), element);
});
return newMap;
}