Examine source code of Bitgreen Wallet

{
  "manifest_version": 2,
  "name": "Bitgreen Wallet",
  "description": "Bitgreen Browser Wallet",
  "homepage_url": "https://bitgreen.org",
  "version": "1.3.0",
  "browser_action": {
    "default_icon": "icons/48x48.png",
    "default_popup": "index.html?popup=true"
  },
  "icons": {
    "16": "icons/16x16.png",
    "32": "icons/32x32.png",
    "48": "icons/48x48.png",
    "64": "icons/64x64.png",
    "128": "icons/128x128.png"
  },
  "permissions": [
    "clipboardWrite",
    "storage",
    "tabs"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start",
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "web_accessible_resources": [
    "page.js",
    "inject.js"
  ],
  "content_security_policy": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "webextension@bitgreen.org"
    }
  }
}