Examine source code of Tab Finder

{
  "manifest_version": 2,
  "name": "TabFinder",
  "version": "1.0",
  "description": "Quick tab search. Press Ctrl+Shift+F to open.",
  "author": "Roman Sidoroff",
  "homepage_url": "https://lab9.pro",
  "browser_specific_settings": {
    "gecko": {
      "id": "tabfinder@lab9.pro",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "TabFinder",
    "default_icon": {
      "48": "icon-light.png",
      "96": "icon-light@2x.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Shift+Ctrl+F",
        "mac": "Shift+Ctrl+F"
      },
      "description": "Open TabFinder"
    }
  }
}