tabId

integer. ID of the tab to get.

A Promise that will be fulfilled with a tabs.Tab object containing information about the tab. If the tab could not be found or some other error occurs, the promise will be rejected with an error message.

Get information about a tab when it is activated:

async function logListener(info) {
  try {
    let tabInfo = await browser.tabs.get(info.tabId);
    console.log(tabInfo);
  } catch (error) {
    console.error(error);
  }
}

browser.tabs.onActivated.addListener(logListener);

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