Examine source code of Tabripper

{
  "manifest_version": 3,
  "name": "Tabripper",
  "description": "Rip selected tabs into new window or merge current window into closest window",
  "version": "2.0",
  "browser_specific_settings": {
    "gecko": {
      "id": "tabripper@jorgen",
      "strict_min_version": "140.0"
    }
  },
  "permissions": [
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "commands": {
    "rip-tabs": {
      "suggested_key": {
        "default": "Ctrl+Period",
        "mac": "MacCtrl+Command+Period"
      },
      "description": "Rip selected tabs into new window"
    },
    "merge-window": {
      "suggested_key": {
        "default": "Ctrl+Shift+M",
        "mac": "MacCtrl+Command+M"
      },
      "description": "Merge entire window into closest window"
    }
  }
}