JSON-to-Map and Map-to-JSON converter.

json-map-converter.js

/**
 * Convert a Map to a JSON object.
 *
 * @param {Map<any, any>} map - The Map to convert to JSON.
 * @returns {Object} The converted JSON object.
 */
const mapToJson = (map) => {
  let obj = Object.create(null)

  for (let [key, val] of map) {
    obj[key] = val
  }

  return obj
}

/**
 * Convert a JSON object to a Map.
 *
 * @param {Object} obj - The JSON object to convert.
 * @returns {Map<any, any>} The converted Map.
 */
const jsonToMap = (obj) => {
  let map = new Map()

  for (let key of Object.keys(obj)) {
    map.set(key, obj[key])
  }

  return map
}

module.exports = {
  mapToJson,
  jsonToMap
}