keyMirror with namespaces

keyMirror.js

'use strict';

const keyMirror = (list, namespace) => {
  let newList= {};
  let prefix = namespace ? namespace + ":" : "";

  Object.keys(list).map(element => {
    var key = String(element);
    newList[key] = prefix + element
  });

  return newList
}

export default keyMirror