Mailspring/app/internal_packages/send-and-archive/lib/main.es6

import { ExtensionRegistry } from 'nylas-exports';
import * as SendAndArchiveExtension from './send-and-archive-extension';

export function activate() {
  ExtensionRegistry.Composer.register(SendAndArchiveExtension);
}

export function deactivate() {
  ExtensionRegistry.Composer.unregister(SendAndArchiveExtension);
}