Examine source code of Intro Skipper

{
  "manifest_version": 2,
  "name": "Intro Skipper",
  "version": "0.5",
  "description": "Automatically skip intros on Netflix, Crunchyroll and other streaming services",
  "browser_specific_settings": {
    "gecko": {
      "id": "intro-skipper@dsourav.com",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "*://*.netflix.com/*",
    "*://*.crunchyroll.com/*",
    "*://*.hotstar.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.netflix.com/*"
      ],
      "js": [
        "content-scripts/netflix.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.crunchyroll.com/*"
      ],
      "js": [
        "content-scripts/crunchyroll.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.hotstar.com/*"
      ],
      "js": [
        "content-scripts/hotstar.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Intro Skipper",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "manage.html",
    "open_in_tab": true
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "icons/*.png"
  ]
}