/* Any copyright is dedicated to the Public Domain.
   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

/* import-globals-from /toolkit/components/workerloader/require.js */
importScripts("resource://gre/modules/workers/require.js");
const { createTask } = require("resource://devtools/shared/worker/helper.js");

createTask(self, "groupByField", function ({ items, groupField }) {
  const groups = {};
  for (const item of items) {
    if (!groups[item[groupField]]) {
      groups[item[groupField]] = [];
    }
    groups[item[groupField]].push(item);
  }
  return { groups };
});