basic-with-async-hooks.js

const Configue = require('configue');

const configueOptions = {
  async: true,
  postHooks: {
    argv: function postArgv(nconf) {
      // Perform some async operation to fetch value on mongo, etcd, api or else
      return Promise.resolve('42').then(apiValue => {
        nconf.set('hook', `async post-argv hook:${apiValue}`);
      });
    }
  }
};

Configue.withOptions(configueOptions).resolve(configue => {
  const who = configue.get('who', 'World');
  const hook = configue.get('hook', 'none');

  console.log(`Configue: {who: ${who}, hook: ${hook}}`);
});