Examine source code of Poly+

{
  "name": "Poly+",
  "description": "By DevPixels",
  "version": "2",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.polytoria.com/games/*"
      ],
      "js": [
        "./scripts/game/game_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/games/"
      ],
      "js": [
        "./scripts/game/main_game_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/shop/*"
      ],
      "js": [
        "./scripts/catalog/catalog_inspector.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/home"
      ],
      "js": [
        "./scripts/home/home_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/shop/"
      ],
      "js": [
        "./scripts/catalog/catalog_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/create/*"
      ],
      "js": [
        "./scripts/create/create_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/user/*"
      ],
      "js": [
        "./scripts/profile/profile_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/my/settings*"
      ],
      "js": [
        "./scripts/settings/settings_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/forum/post/*"
      ],
      "js": [
        "./scripts/forum/forumpost_page.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/polyplus/settings/"
      ],
      "js": [
        "./scripts/settings/polyplus_settings.js"
      ]
    },
    {
      "matches": [
        "https://polytoria.com/*"
      ],
      "js": [
        "./scripts/theme/themeapplier.js"
      ]
    },
    {
      "matches": [
        "https://*.polytoria.com/guilds/create"
      ],
      "js": [
        "./scripts/guild/guildpreview.js"
      ]
    }
  ],
  "manifest_version": 2,
  "icons": {
    "128": "PolyPlus.png"
  }
}