Examine source code of SuprHotKeys

{
  "manifest_version": 2,
  "name": "SuprHotKeys",
  "version": "1.1resigned1",
  "applications": {
    "gecko": {
      "id": "gauravkumar37@gmail.com",
      "strict_min_version": "55.0"
    }
  },
  "description": "Sup(e)r charges your browser with useful hotkeys. This add-on provides some useful shortcuts to be used in any page. This eases the process of selecting a text and searching it in google. It also provides some useful keyboard shortcuts to be used in the google search page. ",
  "icons": {
    "48": "icons/ic_keyboard_black_48dp_1x.png",
    "96": "icons/ic_keyboard_black_48dp_2x.png"
  },
  "permissions": [
    "activeTab"
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "commands": {
    "search-new-page": {
      "suggested_key": {
        "default": "Ctrl+Shift+Space"
      },
      "description": "Send a 'search-new-page' event"
    },
    "search-current-page": {
      "suggested_key": {
        "default": "Ctrl+Space"
      },
      "description": "Send a 'search-current-page' event"
    },
    "open-new-tab": {
      "suggested_key": {
        "default": "Alt+L"
      },
      "description": "Opens a new tab"
    },
    "close-tab": {
      "suggested_key": {
        "default": "Alt+K"
      },
      "description": "Closes current tab"
    },
    "next-tab": {
      "suggested_key": {
        "default": "Alt+Period"
      },
      "description": "Switches to the next tab"
    },
    "prev-tab": {
      "suggested_key": {
        "default": "Alt+Comma"
      },
      "description": "Switches to the previous tab"
    }
  }
}