Examine source code of Spicetown

{
  "name": "Spicetown",
  "description": "Add spice to Flavortown!",
  "version": "0.2.21",
  "manifest_version": 3,
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "storage",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess",
    "tabs"
  ],
  "host_permissions": [
    "*://flavortown.hackclub.com/*",
    "https://slack.com/*",
    "https://cachet.dunkirk.sh/emojis",
    "https://*.slack-edge.com/*"
  ],
  "action": {
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://flavortown.hackclub.com/*"
      ],
      "js": [
        "scripts/theme-engine.js"
      ],
      "css": [
        "scripts/content.css"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "scripts/content.js"
      ],
      "matches": [
        "https://flavortown.hackclub.com/*"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "service_worker": "scripts/background.js",
    "scripts": [
      "scripts/background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*.png",
        "download/*.png",
        "themes/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e67ead6-7420-4202-8140-4695a3b8ab5d}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  }
}