@modern-kit/utils/dist/array/groupBy/index.cjs

modern-kit/utils

'use strict';

function groupBy(arr, iteratee) {
  const group = {};
  for (let i = 0; i < arr.length; i++) {
    const item = arr[i];
    const key = iteratee(item);
    if (group[key] == null) {
      group[key] = [];
    }
    group[key].push(item);
  }
  return group;
}

exports.groupBy = groupBy;
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