Examine source code of Forced Copy

{
  "manifest_version": 3,
  "name": "Forced Copy",
  "version": "1.0.0",
  "description": "Force-enables copy, paste, text selection and image actions (context menu, save image) on sites that block them. Per-site toggle and exclusion list.",
  "browser_specific_settings": {
    "gecko": {
      "id": "forcedcopy@firexrwt",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "action": {
    "default_title": "Forced Copy",
    "default_popup": "popup.html",
    "default_icon": "icons/icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "main-world.js"
      ],
      "run_at": "document_start",
      "all_frames": true,
      "world": "MAIN"
    },
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "common.js",
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": true
    }
  ]
}