chrome.runtime.onInstalled.addListener(function () {
    chrome.declarativeContent.onPageChanged.removeRules(undefined, function () {
        chrome.declarativeContent.onPageChanged.addRules([
            {
                conditions: [
                    new chrome.declarativeContent.PageStateMatcher({
                        pageUrl: { hostEquals: "vk.com" },
                    }),
                ],
                actions: [new chrome.declarativeContent.ShowPageAction()],
            },
        ]);
    });
});