Examine source code of AutoGrow Textareas

{
  "manifest_version": 3,
  "name": "AutoGrow Textareas",
  "author": "Domenic DiNatale, Intellitech Innovations",
  "homepage_url": "https://intell.co",
  "version": "1.0.0",
  "description": "Automatically expands textareas to fit their content.",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "run_at": "document_idle",
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_title": "AutoGrow Textareas",
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "autogrow-textareas@intell.co",
      "strict_min_version": "109.0"
    }
  }
}