web-annotation-discovery-webextension/src/util

const notifications = new Map();

export default async function notify({
  type = 'basic',
  iconUrl = transparent1pixelPng,
  message = '',
  title = '',
  onClicked = () => {},
  ...otherProps
}: Partial<
  browser.notifications.CreateNotificationOptions & {
    onClicked: () => void;
  }
>) {
  const notificationId = await browser.notifications.create({
    type,
    iconUrl,
    title,
    message,
    ...otherProps,
  });
  notifications.set(notificationId, { onClicked });

  if (!browser.notifications.onClicked.hasListener(clickedListener)) {
    browser.notifications.onClicked.addListener(clickedListener);
  }
  if (!browser.notifications.onClosed.hasListener(closedListener)) {
    browser.notifications.onClosed.addListener(closedListener);
  }
}

function clickedListener(notificationId: string) {
  if (notifications.has(notificationId)) {
    notifications.get(notificationId).onClicked();
  }
}

function closedListener(notificationId: string) {
  if (notifications.has(notificationId)) {
    notifications.delete(notificationId);
    if (notifications.size === 0) {
      browser.notifications.onClosed.removeListener(clickedListener);
      browser.notifications.onClosed.removeListener(closedListener);
    }
  }
}

const transparent1pixelPng =
  'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAC0lEQVQI12NgAAIAAAUAAeImBZsAAAAASUVORK5CYII=';