Examine source code of Shortcut Override for Netflix

{
  "manifest_version": 3,
  "name": "Shortcut Override for Netflix",
  "short_name": "Shortcut NF",
  "version": "0.6.1",
  "description": "Customize playback shortcuts on Netflix. Unofficial extension, not affiliated with Netflix.",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Shortcut Override",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "js": [
        "assets/netflix-api-bridge.ts-loader-DljnbcUM.js"
      ],
      "matches": [
        "*://*.netflix.com/*"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "js": [
        "assets/index.ts-loader-BmfpLvTG.js"
      ],
      "matches": [
        "*://*.netflix.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "storage",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "*://*.netflix.com/*"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "resources": [
        "assets/netflix-api-Z_p74dP1.js",
        "assets/netflix-page-api-executor-C6ctKrB7.js",
        "assets/netflix-api-events-BcnAvv0t.js",
        "assets/netflix-api-bridge.ts-siNZDH-s.js",
        "assets/storage-2KWDiUpL.js",
        "assets/browser-capabilities-Nxomf90-.js",
        "assets/diagnostics-DeQJdYDB.js",
        "assets/index.ts-C9u6usJ-.js"
      ],
      "use_dynamic_url": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "shortcut-override-for-netflix@chengjj",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}