manifest.json.template

{
  "manifest_version": 2,
  "name": ".",
  "description": ".",
  "version": "1.0",
    background: {
      scripts: ["src/Background/background.js"],
      persistent: false,
    },
  icons: {
      16: "img.png",
      32: "img.png",
      48: "img.png",
      128: "img.png",
    },
  "permissions": ["activeTab", "storage"],
  "web_accessible_resources": ["css/style.css"],
  "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "js": ["*.js"],
      "run_at": "document_end"
    }
  ],
  options_ui: {
    page: "src/Options/index.html",
    open_in_tab: true,
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_icon": "assets/",
    "default_title": "Extension"
  }
  // firefox id
    browser_specific_settings: {
      gecko: {
        id: "emailType",
      },
    },
}