Examine source code of CodeMirror PRIMARY Bridge

{
  "manifest_version": 3,
  "name": "CodeMirror PRIMARY Bridge",
  "version": "1.0.0",
  "description": "Restores middle-click paste from CodeMirror editors on Linux/BSD by forwarding selections to the X11/Wayland PRIMARY buffer.",
  "permissions": [
    "nativeMessaging",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": false
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cm_primary@automathics.net",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}