21 lines
671 B
JavaScript
21 lines
671 B
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
var CreateDataPropertyOrThrow = require('es-abstract/2024/CreateDataPropertyOrThrow');
|
||
|
|
var OrdinaryObjectCreate = require('es-abstract/2024/OrdinaryObjectCreate');
|
||
|
|
|
||
|
|
var forEach = require('es-abstract/helpers/forEach');
|
||
|
|
|
||
|
|
var GroupBy = require('es-abstract/2024/GroupBy'); // TODO: replace with es-abstract 2024 implementation
|
||
|
|
|
||
|
|
module.exports = function groupBy(items, callbackfn) {
|
||
|
|
var groups = GroupBy(items, callbackfn, 'PROPERTY'); // step 1
|
||
|
|
|
||
|
|
var obj = OrdinaryObjectCreate(null); // step 2
|
||
|
|
|
||
|
|
forEach(groups, function (g) { // step 3
|
||
|
|
CreateDataPropertyOrThrow(obj, g['[[Key]]'], g['[[Elements]]']); // steps 3.a - 3.b
|
||
|
|
});
|
||
|
|
|
||
|
|
return obj; // step 4
|
||
|
|
};
|