Tabs

Mostly don't need tabs permission, except to populate url, pendingUrl, title, and favIconUrl properties of Tab.

Open New Tab

const createProperties = { url: `localhost:3000/show/${show_id}/edit` };
browser.tabs
  .create(createProperties)
  .catch(err => console.error("Tab create error: ", err));

Get active tab

const tabs = await browser.tabs.query({
  lastFocusedWindow: true,
  active: true
});
const activeTab = tabs[0];

Send Message to All Tabs

browser.tabs.query({}).then((tabs) => {
  tabs.forEach((tab) => {
    ensureValidContent(tab.id).catch(console.error);
  });
});