Examine source code of LinkedIn Next

{
  "manifest_version" : 3 ,
  "name" : "LinkedIn Next",
  "version" : "0.1.0",
  "description" : "Firefox WebExtension MV3 to automate navigation in LinkedIn Learning",
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-next@local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions" : [
    "storage" ,
    "alarms" 
  ],
  "host_permissions" : [
    "https://www.linkedin.com/learning/*" 
  ],
  "background" : {
    "scripts" : [
      "background/index.js" 
    ]
  },
  "action" : {
    "default_popup" : "popup/index.html",
    "default_title" : "LinkedIn Next"
  },
  "options_ui" : {
    "page": "options/index.html" ,
    "open_in_tab": true
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://www.linkedin.com/learning/*" 
      ],
      "js" : [
        "content/index.js" 
      ],
      "run_at" : "document_idle" 
    }
  ]
}