Foxy Gestures: Close Tab and Focus Left

close-tab-focus-left.gesture.js

executeInBackground(async () => {
    const tabs = await browser.tabs.query({currentWindow: true});
    const activeTab = tabs.find((t) => t.active);
    if (activeTab.index > 0) {
        // Set the current tab to the tab on the left.
        let nextTab = tabs.find((t) => t.index == activeTab.index - 1);
        await browser.tabs.update(nextTab.id, {active: true});
    }
    // Close the current tab.
    await browser.tabs.remove(activeTab.id);
}).catch((e) => {
    console.error(e);
});