Examine source code of FadeStation

{
  "manifest_version": 2,
  "name": "FadeStation",
  "version": "1.2.3",
  "description": "Adds Owned/Crap buttons to the PS Store, fades ignored games, and provides import/export tools.",
  "icons": {
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "downloads",
    "*://store.playstation.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://store.playstation.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "psstore-fadestation@darrenking.local",
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}