Asynchronous Configuration in Node.js

1.js

import {setPath} from './2';

(async () => {
  await setPath();
  // Could also do dynamic import() here with https://github.com/airbnb/babel-plugin-dynamic-import-node
  require('./3');
})();

2.js

export const config = {};
export function setPath () {
  config.path = '/tmp';
}

3.js

import {config} from './2';

console.log('path', config.path); // logs "path /tmp"

package.json

{
  "scripts": {
    "one": "node -r babel-register 1.js"
  }
}