Examine source code of Moxfield AeonShift Points

{
  "manifest_version": 2,
  "name": "Moxfield AeonShift Points",
  "version": "1.3",
  "description": "Display AeonShift points on Moxfield",
  "permissions": [
    "storage",
    "https://moxfield.com/*",
    "https://points.aeonshift.games/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://moxfield.com/*"
      ],
      "js": [
        "points.js",
        "content.js"
      ],
      "css": [
        "style.css"
      ]
    }
  ],
  "icons": {
    "16": "icons/ASMoxfield16x16.png",
    "32": "icons/ASMoxfield32x32.png",
    "48": "icons/ASMoxfield48x48.png",
    "128": "icons/ASMoxfield128x128.png"
  },
  "web_accessible_resources": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "moxfield-aeonshift@babetsmtg.hopto.org",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}