Small helper function making a json object into a map of sharedArrays - no checks that this will work are made

jsonMapToMapOfSharedArray.js

import { SharedArray } from "k6/data";

export function mapOfSharedArrays(file) {
  let result = {};
  let wholeFile;
  let populateMap = () => {
    if (wholeFile != null) { return; }
    wholeFile = JSON.parse(open(file));
  }
  var keys = new SharedArray(file + "/keys", () => {
    populateMap()
    return Object.keys(wholeFile);
  })
  for (let i = 0; i < keys.length; i++) {
    result[keys[i]] = new SharedArray(keys[i], function() {
      populateMap()
      return wholeFile[keys[i]];
    });
  }

  return result
}