metamask-extension/ui/app/components/dropdowns/index.js

// Reusable Dropdown Components
// TODO: Refactor into separate components
const Dropdown = require('./components/dropdown').Dropdown
const AccountDropdowns = require('./components/account-dropdowns')

// App-Specific Instances
const AccountSelectionDropdown = require('./account-selection-dropdown')
const AccountOptionsDropdown = require('./account-options-dropdown')
const NetworkDropdown = require('./network-dropdown').default

module.exports = {
  AccountSelectionDropdown,
  AccountOptionsDropdown,
  NetworkDropdown,
  Dropdown,
  AccountDropdowns,
}