Examine source code of firelomo

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "1.1.0",
  "description": "__MSG_extensionDescription__",
  "developer": {
    "name": "7sDream",
    "url": "https://github.com/7sDream/firelomo"
  },
  "default_locale": "zh_CN",
  "icons": {
    "48": "icons/firelomo-48.png",
    "96": "icons/firelomo-96.png",
    "128": "icons/firelomo-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firelomo.firefox@7sdre.am",
      "strict_min_version": "57.0"
    }
  },
  "background": {
    "page": "dist/background/background.html"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/firelomo-48.png"
    },
    "default_title": "__MSG_extensionName__"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+M",
        "mac": "Command+Shift+M"
      },
      "description": "__MSG_browserActionShortcutDescription__"
    }
  },
  "options_ui": {
    "page": "dist/pages/options/options.html",
    "browser_style": true
  },
  "permissions": [
    "https://flomoapp.com/*",
    "activeTab",
    "menus",
    "storage"
  ]
}