odin-js-fundamentals-part-4/node_modules/object.groupby/implementation.js

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2024-01-05 19:30:21 +00:00
'use strict';
var CreateDataPropertyOrThrow = require('es-abstract/2022/CreateDataPropertyOrThrow');
var OrdinaryObjectCreate = require('es-abstract/2022/OrdinaryObjectCreate');
var forEach = require('es-abstract/helpers/forEach');
var GroupBy = require('./aos/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
};