an extension tha each time I close a tab a new one open - https://redd.it/49j7h5

event.js

const mappings = {};

chrome.tabs.onCreated.addListener((tab) => {
  mappings[tab.id] = tab.url;
});

chrome.tabs.onUpdated.addListener((tabId, changeInfo, tab) => {
  mappings[tabId] = tab.url;
});

chrome.tabs.onRemoved.addListener((tabId, removeInfo) => {
  const url = mappings[tabId]

  console.log(`Closing ${url}`);
  
  if (url != 'chrome://newtab/') {
    chrome.tabs.create({});  
  }
});

manifest.json

{
  "manifest_version": 2,
  "name": "Keep Tab",
  "version": "0.1",
  "description": "an extension tha each time I close a tab a new one open - https://redd.it/49j7h5",
  "background": {
    "scripts": ["event.js"],
    "persistent": true
  },
  "permissions": ["tabs"]
}