Examine source code of BetterMedium

{
  "manifest_version": 3,
  "name": "BetterMedium",
  "version": "0.1.0",
  "description": "Find public Medium stories and author-shared Friend Links in the Gmail digest you opened.",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage",
    "webRequest"
  ],
  "host_permissions": [
    "https://medium.com/*",
    "https://*.medium.com/*",
    "https://mail.google.com/*"
  ],
  "optional_host_permissions": [
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*"
      ],
      "js": [
        "content/gmail-observer.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_title": "Analyze this Medium digest",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "48": "icons/icon.svg",
      "96": "icons/icon.svg"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bettermedium@oonurhp.local",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}