Examine source code of SnapText – Text Expander

{
  "manifest_version": 2,
  "name": "SnapText – Text Expander",
  "version": "1.0.0",
  "description": "Define shortcuts that auto-expand to formatted text snippets as you type — on every website.",
  "author": "SnapText",
  "browser_specific_settings": {
    "gecko": {
      "id": "snaptext@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "SnapText – Text Expander",
    "default_icon": {
      "48": "icon48.svg",
      "96": "icon96.svg"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "icons": {
    "48": "icon48.svg",
    "96": "icon96.svg"
  }
}