@techmely/utils/groupBy.js

Collection of helpful JavaScript / TypeScript utils

/*!
 * @techmely/utils
 * Copyright(c) 2021-2024 Techmely <techmely.creation@gmail.com>
 * MIT Licensed
 */

"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);

// src/groupBy.ts
var groupBy_exports = {};
__export(groupBy_exports, {
  groupBy: () => groupBy
});
module.exports = __toCommonJS(groupBy_exports);
function groupBy(list, keyGetter) {
  const map = /* @__PURE__ */ new Map();
  for (const item of list) {
    const key = keyGetter(item);
    const collection = map.get(key);
    if (collection) {
      collection.push(item);
    } else {
      map.set(key, [item]);
    }
  }
  return map;
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  groupBy
});