Examine source code of Spotify Adblock

{
  "manifest_version": 3,
  "name": "__MSG_name__",
  "author": "Spotify Adblock",
  "short_name": "Spotify Adblock",
  "description": "__MSG_description__",
  "default_locale": "en",
  "homepage_url": "https://open.spotify.com",
  "version": "2.0.8",
  "icons": {
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://open.spotify.com/*"
      ],
      "js": [
        "content/websocket_hook.js"
      ],
      "run_at": "document_start",
      "world": "MAIN",
      "all_frames": true
    },
    {
      "matches": [
        "https://open.spotify.com/*"
      ],
      "js": [
        "content/content_script.js",
        "content/share_panel.js"
      ],
      "css": [
        "content/styles.css"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://open.spotify.com/embed/*"
      ],
      "js": [
        "embed/embed_hook.js"
      ],
      "run_at": "document_start",
      "world": "MAIN",
      "all_frames": true
    },
    {
      "matches": [
        "https://open.spotify.com/embed/*"
      ],
      "js": [
        "embed/embed_content.js"
      ],
      "run_at": "document_idle",
      "all_frames": true
    },
    {
      "matches": [
        "*://*/*"
      ],
      "exclude_matches": [
        "https://open.spotify.com/*"
      ],
      "js": [
        "content/embedded_spotify.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "embed/rateus.html",
        "images/icon-48.png",
        "embed/modal.html"
      ],
      "matches": [
        "https://open.spotify.com/*"
      ]
    },
    {
      "resources": [
        "share/share.html",
        "share/share.css",
        "web_accessible_resources/noop-1s.mp4"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "32": "images/icon-32.png",
      "48": "images/icon-48.png",
      "64": "images/icon-64.png",
      "128": "images/icon-128.png"
    },
    "default_title": "Spotify Adblock"
  },
  "permissions": [
    "declarativeNetRequest",
    "scripting",
    "storage",
    "tabs"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_0",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; frame-src *;"
  },
  "commands": {
    "open_spotify": {
      "suggested_key": {
        "default": "Alt+S",
        "windows": "Alt+S",
        "mac": "Alt+S",
        "chromeos": "Alt+S",
        "linux": "Alt+S"
      },
      "description": "Press Alt + S to open Spotify (option + S for MacOS)"
    }
  },
  "host_permissions": [
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "2026@spotify-adblock",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}