Default export

default-export.js

// single
export default a;

// object
export default {
  count () {
    return 'nooo';
  },
  increase (a) {
    return a + 1;
  },
  decrease (a) {
    return a - 1;
  }
};

// function
export default function(a) {
  return a;
}

// variable
const c = 'Awesome variable';
export default c;