Examine source code of Angel Cookie

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.2.1",
  "homepage_url": "https://angelcookie.app/",
  "manifest_version": 2,
  "icons": {
    "16": "icons/default-16.png",
    "48": "icons/default-48.png",
    "128": "icons/default-128.png"
  },
  "permissions": [
    "*://angelcookie.gitlab.io/*",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Angel Cookie",
    "default_icon": {
      "16": "icons/default-16.png",
      "24": "icons/default-24.png",
      "32": "icons/default-32.png"
    },
    "default_popup": "html/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_script.js"
      ]
    }
  ],
  "default_locale": "en",
  "web_accessible_resources": [
    "icons/default-32.png",
    "icons/matched-32.png",
    "icons/done-32.png",
    "icons/info-32.png",
    "icons/failed-32.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "debug@angelcookie.app"
    }
  }
}