Examine source code of Sarradon patient

{
  "description": "Trouver un patient dans l'agenda",
  "manifest_version": 2,
  "name": "Sarradon patient",
  "version": "2.3.2",
  "homepage_url": "https://psarradon.fr",
  "icons": {
    "48": "icons/icon48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "psarradon_online@psarradon.fr",
      "strict_min_version": "42.0"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://pro.doctolib.fr/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "notifications",
    "contextMenus",
    "storage",
    "https://psarradon.fr/*"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    },
    "default_title": "Taches en attentes"
  }
}