Examine source code of SAT® Score Hider

{
  "manifest_version": 3,
  "name": "SAT® Score Hider",
  "version": "1.0",
  "description": "Hides SAT® scores until clicked on, plays sounds, and displays confetti",
  "browser_specific_settings": {
    "gecko": {
      "id": "@SATScoreHider.NobiDevs",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://studentscores.collegeboard.org/*",
        "*://mysat.collegeboard.org/*"
      ],
      "js": [
        "content.js",
        "confetti.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_end"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "SAT® Score Hider"
  },
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png",
    "512": "icons/512.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "audio/*.mp3"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}