CODEWITHSUNDEEP
node.jsmodule.exports
Sudarshan Soma
Sudarshan Soma

Reputation: 68

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

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() {}

Upvotes: 1

Views: 1120

Answers (2)

Ilijanovic
Ilijanovic

Reputation: 14904

You could use spread operator

const type1 = require('./constants1.js');
const type2 = require('./constants2.js');

function getId() {}
function getUser() {}

module.exports = Object.freeze({ getId, getUser, ...type1, ...type2 })

Upvotes: 1

Patrice Thimothee
Patrice Thimothee

Reputation: 977

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

Upvotes: 1

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