Examine source code of RooBY

{
  "manifest_version": 3,
  "name": "RooBY",
  "version": "1.2.0",
  "description": "Adds calculators and extra functionality to Generation 1 Pokemon Showdown",
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "background": {
    "service_worker": "scripts/worker.js",
    "scripts": [
      "scripts/worker.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "world": "MAIN",
      "js": [
        "scripts/page.js"
      ],
      "matches": [
        "https://play.pokemonshowdown.com/*",
        "https://replay.pokemonshowdown.com/*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "scripts/unpkg.com_@smogon_calc@0.7.0_dist_production.min.js",
        "scripts/unpkg.com_@smogon_calc@0.7.0_dist_data_production.min.js",
        "scripts/util.js",
        "scripts/consts.js",
        "scripts/calculator.js",
        "scripts/playUtil.js",
        "scripts/playContent.js"
      ],
      "css": [
        "styles/style.css"
      ],
      "matches": [
        "https://play.pokemonshowdown.com/*",
        "https://replay.pokemonshowdown.com/*"
      ],
      "run_at": "document_end"
    },
    {
      "js": [
        "scripts/unpkg.com_@smogon_calc@0.7.0_dist_production.min.js",
        "scripts/unpkg.com_@smogon_calc@0.7.0_dist_data_production.min.js",
        "scripts/util.js",
        "scripts/consts.js",
        "scripts/calculator.js",
        "scripts/calcContent.js"
      ],
      "matches": [
        "https://calc.pokemonshowdown.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "images/icon-128.png",
        "images/random.png",
        "images/default.png",
        "images/digimonicons-sheet.png",
        "images/gen5icons-sheet.png",
        "images/gen5icons-pokeball-sheet.png",
        "images/articons-sheet.png",
        "images/articons-pokeball-sheet.png",
        "images/sprites/*.png",
        "images/backdrops/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "rooby@datumlocker.com"
    }
  }
}