Use require() (or other method) in Nodejs as in PHP

Question

In PHP

Suppose I have a constant file, in a root directory, called const.php:

define('CONST_1', BASE_CONST_1 || 'Value 1');
define('CONST_2', 'Value 2');
define('CONST_3', 'Value 3');

And another file, in the same directory, called index php.:

define('BASE_CONST_1', 'Valor que veio do índice';

require_once 'const.php';

echo CONST_1; // Iria aparecer na tela do usuário `Valor que veio do índice`.

Emphasize above what happened:

• We define in the file index php. a constant, which was passed to the archive const.php and which was used to define another constant based on its value (CONST_1).
• We call the constant CONST_1 back to the archive index php., without any kind of export in the file of its origin.

Obviously there is no logic in doing exactly as I did above, my goal was just to show what I can do in PHP.

No Nodejs

In Nodejs, I don’t know how to do that, given that:

• Variables and constants are not passed to the file we import (in the same way as, in the PHP example, the constant BASE_CONST_1 was passed to the archive const.php.

The question

I can do, in Nodejs, what I did with PHP (in the example above), without having to create functions and pass parameters in them?

Answer 1

Node.js uses modules you can import. For example:

// modulo.js
module.exports = {
   'funcao' : function() { return 'função executada'; },
   'propriedade' : 10
}

// principal.js
const meuModulo = require('./modulo');
console.log(meuModulo.funcao());
console.log(meuModulo.propriedade);