Examine source code of Emoter

{
  "manifest_version": 2,
  "name": "Emoter",
  "version": "1.1.1",
  "description": "Extension for custom emotes.",
  "homepage_url": "https://github.com/syanth",
  "icons": {
    "48": "icons/icon-48.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "emoter@syanth"
    }
  },
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/icon-32.png",
    "default_title": "Emoter",
    "default_popup": "popup/choose_emote.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+O"
      }
    }
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "chrome_style": true
  }
}