Examine source code of Anime Skip Player

{
  "manifest_version": 3,
  "name": "Anime Skip Player",
  "description": "Custom video player for anime streaming websites. Skip intros, outros, and more.",
  "version": "2.0.5",
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0442d98f-4ecc-4859-a65a-13e5969da46b}",
      "strict_min_version": "109.0"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.anime-skip.com/*"
      ],
      "js": [
        "content-scripts/anime-skip.js"
      ]
    },
    {
      "matches": [
        "*://www.crunchyroll.com/*"
      ],
      "all_frames": false,
      "css": [
        "content-scripts/crunchyroll-player.css"
      ],
      "js": [
        "content-scripts/crunchyroll-helper.js",
        "content-scripts/crunchyroll-player.js"
      ]
    },
    {
      "matches": [
        "*://www.crunchyroll.com/*"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "js": [
        "content-scripts/keydown-blocker.js"
      ]
    }
  ]
}