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manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Popup Blocker",
  "description": "This extension automatically closes tabs and windows opened by ad-requiring sites",
  "version": "3.1.0",
  "action": {
    "default_icon": {
      "19": "images/icon19.png",
      "38": "images/icon38.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "contextMenus"
  ],
  "background": {
    "service_worker": "background.js",
    "type": "module"
  }
}