Examine source code of Custom Bangs

{
  "manifest_version": 2,
  "name": "Custom Bangs",
  "version": "1.0.4",
  "description": "Custom bang shortcuts for quick navigation and search",
  "license": "MIT",
  "browser_specific_settings": {
    "gecko": {
      "id": "custom-bangs@ly7erg1c",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "contextMenus",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "default-bangs.js",
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon-48.png"
    },
    "default_title": "Custom Bangs"
  }
}