Examine source code of tab-events-tab-events

{
  "manifest_version": 2,
  "name": "tab-events-tab-events",
  "description": "A utility addon that prints out tab related events",
  "version": "0.1.2",
  "author": "Tilwa Qendov",
  "homepage_url": "https://github.com/tqdv/tab-events-tab-events",
  "icons": {
    "1": "icons/icon.plain.svg"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/icon.plain.svg",
    "theme_icons": [
      {
        "size": 16,
        "dark": "icons/icon.plain.svg",
        "light": "icons/icon-dark.plain.svg"
      }
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tab-events-tab-events@tqdv.addons.mozilla.org",
      "strict_min_version": "55.0"
    }
  }
}