netpower-js/lib/extensions/array.js

A common library that can be used for fe and be

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
Array.prototype.groupBy = function (groupFunc) {
    var map = new Map();
    this.forEach(function (item) {
        var key = groupFunc(item);
        var collection = map.get(key);
        if (!collection) {
            map.set(key, [item]);
        }
        else {
            collection.push(item);
        }
    });
    return map;
};
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