Mailspring/app/internal_packages/composer-emoji/lib/main.es6

import { ExtensionRegistry, ComponentRegistry } from 'nylas-exports';
import EmojiStore from './emoji-store';
import EmojiComposerExtension from './emoji-composer-extension';
import EmojiMessageExtension from './emoji-message-extension';
import EmojiButton from './emoji-button';

export function activate() {
  ExtensionRegistry.Composer.register(EmojiComposerExtension);
  ExtensionRegistry.MessageView.register(EmojiMessageExtension);
  ComponentRegistry.register(EmojiButton, { role: 'Composer:ActionButton' });
  EmojiStore.activate();
}

export function deactivate() {
  ExtensionRegistry.Composer.unregister(EmojiComposerExtension);
  ExtensionRegistry.MessageView.unregister(EmojiMessageExtension);
  ComponentRegistry.unregister(EmojiButton);
}