Examine source code of Modrinth Extras

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.4.1",
  "icons": {
    "16": "/icon-16.png",
    "32": "/icon-32.png",
    "48": "/icon-48.png",
    "64": "icon-64.png",
    "128": "/icon-128.png"
  },
  "default_locale": "en_US",
  "permissions": [
    "cookies",
    "storage",
    "alarms",
    "https://modrinth.com/*",
    "https://api.modrinth.com/*",
    "https://www.curseforge.com/*"
  ],
  "optional_permissions": [
    "notifications"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@creeperkatze.de",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Modrinth Extras",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://modrinth.com/*"
      ],
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "https://www.curseforge.com/*"
      ],
      "run_at": "document_start",
      "js": [
        "content-scripts/curseforge-bridge.js"
      ],
      "world": "MAIN"
    },
    {
      "matches": [
        "https://www.curseforge.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/curseforge.js"
      ]
    },
    {
      "matches": [
        "https://modrinth.com/*"
      ],
      "run_at": "document_idle",
      "js": [
        "content-scripts/modrinth-bridge.js"
      ],
      "world": "MAIN"
    }
  ]
}