Examine source code of JavaScript Disabler

{
  "author": "hamid bozorgh",
  "manifest_version": 2,
  "name": "JavaScript Disabler",
  "version": "2.3.1",
  "description": "Adds the ability to disable JavaScript on specific sites.",
  "homepage_url": "https://github.com/dpacassi/disabler-javascript",
  "default_locale": "en",
  "icons": {
    "40": "icons/40/app.png",
    "48": "icons/48/app.png",
    "128": "icons/128/app.png"
  },
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "40": "icons/40/js-on.png",
      "48": "icons/48/js-on.png",
      "128": "icons/128/js-on.png"
    },
    "default_title": "Toggle JavaScript"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "options_ui": {
    "browser_style": false,
    "open_in_tab": true,
    "page": "pages/options.html"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "menus",
    "contextMenus"
  ],
  "commands": {
    "toggle-state": {
      "suggested_key": {
        "default": "Alt+Shift+1"
      },
      "description": "Toggle JavaScript"
    },
    "open-settings": {
      "suggested_key": {
        "default": "Alt+Shift+2"
      },
      "description": "Open Disable JavaScript settings"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b89399c6-fcf4-4ff4-9507-807def3b17ee}"
    }
  }
}