Examine source code of Ratels-wallet

{
  "manifest_version": 2,
  "name": "Ratels",
  "description": "chrome extension",
  "version": "0.0.1",
  "icons": {
    "16": "logo-icon16.png",
    "32": "logo-icon32.png",
    "48": "logo-icon48.png",
    "128": "logo-icon128.png"
  },
  "homepage_url": "https://5fcuc-3aaaa-aaaam-qabea-cai.raw.ic0.app",
  "browser_action": {
    "default_icon": "logo-icon.png",
    "default_popup": "index.html"
  },
  "content_security_policy": "script-src 'self' https://fonts.googleapis.com/css 'unsafe-eval'; object-src 'self'"
}