Examine source code of Text Template

{
  "manifest_version": 2,
  "name": "Text Template",
  "version": "0.9.4",
  "description": "Добавляет возможность вставлять шаблоны текста в поля ввода с применением сокращений || Adds the ability to insert text templates into input fields using abbreviations",
  "icons": {
    "48": "icons/icon48.png",
    "96": "icons/icon96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "48.0",
      "id": "{e55dd44b-3658-469a-aad0-ec4e5242332e}"
    }
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.min.js",
        "app.js"
      ]
    }
  ]
}