Examine source code of TabJump: Shortcuts for Open Tabs

{
  "manifest_version": 2,
  "name": "TabJump: Shortcuts for Open Tabs",
  "version": "0.2.0",
  "description": "Assign temporary jump keys to open tabs so you can quickly move between them while you work.",
  "homepage_url": "https://github.com/pbarney/tabjump",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "64": "icons/icon-64.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "tabs",
    "storage",
    "menus",
    "notifications"
  ],
  "background": {
    "scripts": [
      "platform.js",
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "default_title": "TabJump",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+J",
        "windows": "Alt+J",
        "linux": "Alt+J",
        "mac": "MacCtrl+J"
      },
      "description": "Open TabJump"
    },
    "jump-slot-1": {
      "suggested_key": {
        "default": "Alt+1",
        "windows": "Alt+1",
        "linux": "Ctrl+1",
        "mac": "MacCtrl+1"
      },
      "description": "Jump to tab in slot 1"
    },
    "jump-slot-2": {
      "suggested_key": {
        "default": "Alt+2",
        "windows": "Alt+2",
        "linux": "Ctrl+2",
        "mac": "MacCtrl+2"
      },
      "description": "Jump to tab in slot 2"
    },
    "jump-slot-3": {
      "suggested_key": {
        "default": "Alt+3",
        "windows": "Alt+3",
        "linux": "Ctrl+3",
        "mac": "MacCtrl+3"
      },
      "description": "Jump to tab in slot 3"
    },
    "jump-slot-4": {
      "suggested_key": {
        "default": "Alt+4",
        "windows": "Alt+4",
        "linux": "Ctrl+4",
        "mac": "MacCtrl+4"
      },
      "description": "Jump to tab in slot 4"
    },
    "jump-slot-5": {
      "suggested_key": {
        "default": "Alt+5",
        "windows": "Alt+5",
        "linux": "Ctrl+5",
        "mac": "MacCtrl+5"
      },
      "description": "Jump to tab in slot 5"
    },
    "jump-slot-6": {
      "suggested_key": {
        "default": "Alt+6",
        "windows": "Alt+6",
        "linux": "Ctrl+6",
        "mac": "MacCtrl+6"
      },
      "description": "Jump to tab in slot 6"
    },
    "jump-slot-7": {
      "suggested_key": {
        "default": "Alt+7",
        "windows": "Alt+7",
        "linux": "Ctrl+7",
        "mac": "MacCtrl+7"
      },
      "description": "Jump to tab in slot 7"
    },
    "jump-slot-8": {
      "suggested_key": {
        "default": "Alt+8",
        "windows": "Alt+8",
        "linux": "Ctrl+8",
        "mac": "MacCtrl+8"
      },
      "description": "Jump to tab in slot 8"
    },
    "jump-slot-9": {
      "suggested_key": {
        "default": "Alt+9",
        "windows": "Alt+9",
        "linux": "Ctrl+9",
        "mac": "MacCtrl+9"
      },
      "description": "Jump to tab in slot 9"
    },
    "unassign-current-tab": {
      "suggested_key": {
        "default": "Alt+Shift+0",
        "windows": "Alt+Shift+0",
        "linux": "Ctrl+Shift+0",
        "mac": "MacCtrl+Shift+0"
      },
      "description": "Unassign current tab from its jump slot"
    },
    "assign-slot-1": {
      "suggested_key": {
        "default": "Alt+Shift+1",
        "windows": "Alt+Shift+1",
        "linux": "Ctrl+Shift+1",
        "mac": "MacCtrl+Shift+1"
      },
      "description": "Assign current tab to slot 1"
    },
    "assign-slot-2": {
      "suggested_key": {
        "default": "Alt+Shift+2",
        "windows": "Alt+Shift+2",
        "linux": "Ctrl+Shift+2",
        "mac": "MacCtrl+Shift+2"
      },
      "description": "Assign current tab to slot 2"
    },
    "assign-slot-3": {
      "suggested_key": {
        "default": "Alt+Shift+3",
        "windows": "Alt+Shift+3",
        "linux": "Ctrl+Shift+3",
        "mac": "MacCtrl+Shift+3"
      },
      "description": "Assign current tab to slot 3"
    },
    "assign-slot-4": {
      "suggested_key": {
        "default": "Alt+Shift+4",
        "windows": "Alt+Shift+4",
        "linux": "Ctrl+Shift+4",
        "mac": "MacCtrl+Shift+4"
      },
      "description": "Assign current tab to slot 4"
    },
    "assign-slot-5": {
      "suggested_key": {
        "default": "Alt+Shift+5",
        "windows": "Alt+Shift+5",
        "linux": "Ctrl+Shift+5",
        "mac": "MacCtrl+Shift+5"
      },
      "description": "Assign current tab to slot 5"
    },
    "assign-slot-6": {
      "suggested_key": {
        "default": "Alt+Shift+6",
        "windows": "Alt+Shift+6",
        "linux": "Ctrl+Shift+6",
        "mac": "MacCtrl+Shift+6"
      },
      "description": "Assign current tab to slot 6"
    },
    "assign-slot-7": {
      "suggested_key": {
        "default": "Alt+Shift+7",
        "windows": "Alt+Shift+7",
        "linux": "Ctrl+Shift+7",
        "mac": "MacCtrl+Shift+7"
      },
      "description": "Assign current tab to slot 7"
    },
    "assign-slot-8": {
      "suggested_key": {
        "default": "Alt+Shift+8",
        "windows": "Alt+Shift+8",
        "linux": "Ctrl+Shift+8",
        "mac": "MacCtrl+Shift+8"
      },
      "description": "Assign current tab to slot 8"
    },
    "assign-slot-9": {
      "suggested_key": {
        "default": "Alt+Shift+9",
        "windows": "Alt+Shift+9",
        "linux": "Ctrl+Shift+9",
        "mac": "MacCtrl+Shift+9"
      },
      "description": "Assign current tab to slot 9"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@tabjump.pbarney",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}