How do we export list of constants and functions from a javascript module

Question

I have to export 2 type of constants and few functions like getUser.

mymodule.js

const type1 = require('./constants1.js');
const type2 = require('./constants2.js');
module.exports = Object.freeze(Object.assign(Object.create(null), type1, type2))

constants1.js

module.exports = Object.freeze({
  DOUBLE: 1,
  FLOAT: 2
})

consumer.js

const udb = require('./mymodule.js');
console.log(udb.DOUBLE);

Now I also want to export function like getUser , how do i change mymodule.js to export the functions too , so that consumer.js can call udb.getUser

something like this but it doesnt work, Please suggest.

module.exports = Object.freeze(Object.assign(Object.create(null), type1, type2)), getUser: function() {} 

Answer 1

constant1.js

module.exports = Object.freeze({
    DOUBLE: 1,
    FLOAT: 2
});

constant2.js

module.exports = Object.freeze({
    TRIPLE: 3,
});

mymodules.js

const getUser = ()=> console.log("Something");
const getId = ()=>console.log("Something2");

const type1 = require("./constants1.cjs");
const type2 = require("./constants2.cjs");

const udb = Object.assign(Object.create(null), type1, type2);
udb.getUser = getUser;
udb.getId = getId;
module.exports = Object.freeze( udb );

consumer.js

const udb = require("./mymodule.cjs");
console.log(udb.DOUBLE);

// udb.getUser();                    
// udb.getId();                    

EDIT: Added a complete example

EDIT 2: Simpler