Examine source code of TurboVPB

{
  "manifest_version": 3,
  "name": "TurboVPB",
  "description": "Turbocharge phone banking with OpenVPB, VAN, and BlueVote. Call and text with 2 clicks!",
  "version": "0.11.4",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "96": "icon-96.png",
    "128": "icon-128.png"
  },
  "author": "Evan Schwartz",
  "homepage_url": "https://turbovpb.com",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'none'"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "content-scripts/content.css"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://www.openvpb.com/*",
    "https://*.everyaction.com/*",
    "https://www.votebuilder.com/*",
    "https://phonebank.bluevote.com/*",
    "https://*.turbovpb.com/*",
    "https://*/ContactDetailScript"
  ],
  "action": {
    "default_title": "TurboVPB",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5ac6de74-7640-4236-a7ed-e19b356b666b}",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo"
        ]
      }
    },
    "developer": {
      "name": "Evan Schwartz",
      "url": "https://emschwartz.me"
    }
  },
  "background": {
    "type": "module",
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.everyaction.com/ContactDetailScript*",
        "https://*.turbovpb.com/test-phonebank",
        "https://*/ContactDetailScript*",
        "https://phonebank.bluevote.com/*",
        "https://www.openvpb.com/VirtualPhoneBank*",
        "https://www.votebuilder.com/ContactDetailScript*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    },
    {
      "matches": [
        "https://*.turbovpb.com/share*",
        "https://turbovpb.com/share*"
      ],
      "js": [
        "content-scripts/share-integration.js"
      ]
    }
  ]
}