Examine source code of Teamsheet Graphic

{
  "manifest_version": 3,
  "name": "Teamsheet Graphic",
  "description": "Provides a Visual Graphic for Open Teamsheet Formats on Pokemon Showdown",
  "version": "1.0.4",
  "permissions": [],
  "action": {
    "default_popup": "default_popup.html",
    "default_icon": "default_icon.png"
  },
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "content_scripts": [
    {
      "js": [
        "scripts/image_namer.js",
        "scripts/content.js"
      ],
      "css": [
        "style/pokemon_graphics.css"
      ],
      "matches": [
        "https://play.pokemonshowdown.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "robinson@pokestats.pucko.info",
      "strict_min_version": "58.0"
    }
  }
}