nodeJS imports and singletons

console-ouput.sh

$ node ./test-imports.js
Ghost created
Ghost says: x
Ghost says: a
Ghost says: b
Ghost says: c

import-proxy.js

const proxied = require('./imported');

proxied.says('x');

module.exports = proxied;

imported.js

function Ghost() {
    console.log('Ghost created');
}

Ghost.prototype.says = function(word) {
    console.log(`Ghost says: ${word}`);
}

module.exports = new Ghost();

test-imports.js

const a = require('./imported');
const b = require('./import-proxy');
const c = require('./imported');

a.says('a');
b.says('b');
c.says('c');