functions.js
module.exports = {
test: function () {
console.log('test');
}
}
app.js
import functions from './functions';
functions.test();
ИЛИ:
functions.js
const test = () => console.log('test');
const test2 = () => console.log('test2');
module.exports = { test, test2 };
app.js
import functions from './functions';
functions.test();
functions.test2();