first
This commit is contained in:
22
node_modules/core-js/modules/esnext.map.key-by.js
generated
vendored
Normal file
22
node_modules/core-js/modules/esnext.map.key-by.js
generated
vendored
Normal file
@ -0,0 +1,22 @@
|
||||
'use strict';
|
||||
var $ = require('../internals/export');
|
||||
var call = require('../internals/function-call');
|
||||
var iterate = require('../internals/iterate');
|
||||
var isCallable = require('../internals/is-callable');
|
||||
var aCallable = require('../internals/a-callable');
|
||||
var Map = require('../internals/map-helpers').Map;
|
||||
|
||||
// `Map.keyBy` method
|
||||
// https://github.com/tc39/proposal-collection-methods
|
||||
$({ target: 'Map', stat: true, forced: true }, {
|
||||
keyBy: function keyBy(iterable, keyDerivative) {
|
||||
var C = isCallable(this) ? this : Map;
|
||||
var newMap = new C();
|
||||
aCallable(keyDerivative);
|
||||
var setter = aCallable(newMap.set);
|
||||
iterate(iterable, function (element) {
|
||||
call(setter, newMap, keyDerivative(element), element);
|
||||
});
|
||||
return newMap;
|
||||
}
|
||||
});
|
Reference in New Issue
Block a user