Examine source code of Disable Tab Detach

{
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.0.6resigned1",
  "author": "Matt Hensman <m@matt.tf>",
  "browser_specific_settings": {
    "gecko": {
      "id": "disable_tab_detach@matt.tf",
      "strict_min_version": "55.0"
    }
  },
  "background": {
    "scripts": [
      "main.js"
    ]
  },
  "commands": {
    "moveTabToNewWindow": {
      "suggested_key": {
        "default": "Ctrl+Alt+N"
      },
      "description": "Move current tab to a new window"
    },
    "pauseExtension": {
      "suggested_key": {
        "default": "Ctrl+Alt+P"
      },
      "description": "Temporarily pause extension"
    }
  },
  "default_locale": "en",
  "manifest_version": 2,
  "page_action": {},
  "permissions": [
    "menus",
    "tabs"
  ]
}