Examine source code of JASON (JSON Manager)

{
  "manifest_version": 2,
  "name": "JASON for Firefox",
  "version": "1.2.0",
  "description": "Quick sidebar for saving and managing JSON snippets",
  "content_security_policy": "default-src 'self'; connect-src 'none'; script-src 'self'; object-src 'none'",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "default_title": "JASON",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jason@stefanostem",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}