klz-cables.com/.pnpm-store/v10/files/43/d65ce4d38d980bac1ed7bebe2c40a7704aa008a7c44b807f8a537b294fcc64e6988150a3b97bd732c7a07d7e158ac07b3f2995b12a00cd44f63736e06063f6

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true,
});
exports.groupBy = groupBy;

/**
 * Groups array items into a Map, given a function to produce grouping key.
 */
function groupBy(list, keyFn) {
  const result = new Map();

  for (const item of list) {
    const key = keyFn(item);
    const group = result.get(key);

    if (group === undefined) {
      result.set(key, [item]);
    } else {
      group.push(item);
    }
  }

  return result;
}