Mailspring/app/internal_packages/open-tracking/lib/main.es6

import {
  ComponentRegistry,
  ExtensionRegistry,
} from 'nylas-exports';
import {HasTutorialTip} from 'nylas-component-kit';
import OpenTrackingButton from './open-tracking-button';
import OpenTrackingIcon from './open-tracking-icon';
import OpenTrackingMessageStatus from './open-tracking-message-status';
import OpenTrackingComposerExtension from './open-tracking-composer-extension';

const OpenTrackingButtonWithTutorialTip = HasTutorialTip(OpenTrackingButton, {
  title: "See when recipients open this email",
  instructions: "When enabled, Mailspring will notify you as soon as someone reads this message. Sending to a group? Mailspring shows you which recipients opened your email so you can follow up with precision.",
});

export function activate() {
  ComponentRegistry.register(OpenTrackingButtonWithTutorialTip,
    {role: 'Composer:ActionButton'});

  ComponentRegistry.register(OpenTrackingIcon,
    {role: 'ThreadListIcon'});

  ComponentRegistry.register(OpenTrackingMessageStatus,
    {role: 'MessageHeaderStatus'});

  ExtensionRegistry.Composer.register(OpenTrackingComposerExtension);
}

export function serialize() {}

export function deactivate() {
  ComponentRegistry.unregister(OpenTrackingButtonWithTutorialTip);
  ComponentRegistry.unregister(OpenTrackingIcon);
  ComponentRegistry.unregister(OpenTrackingMessageStatus);
  ExtensionRegistry.Composer.unregister(OpenTrackingComposerExtension);
}