src/providers/Providers.js

import _ from 'lodash';

import address from './address';
import auth from './auth';
import storage from './storage';

export default class Providers {
  static providers = {
    address,
    auth,
    storage,
  };

  static addProvider(type, name, provider) {
    Providers.providers[type] = Providers.providers[type] || {};
    Providers.providers[type][name] = provider;
  }

  static addProviders(type, providers) {
    Providers.providers[type] = _.merge(Providers.providers[type], providers);
  }

  static getProvider(type, name) {
    if (Providers.providers[type] && Providers.providers[type][name]) {
      return Providers.providers[type][name];
    }
  }

  static getProviders(type) {
    if (Providers.providers[type]) {
      return Providers.providers[type];
    }
  }
}