Examine source code of Rainbow

{
  "action": {
    "default_icon": {
      "16": "images/icon-16.png",
      "19": "images/icon-19.png",
      "32": "images/icon-16@2x.png",
      "38": "images/icon-19@2x.png",
      "64": "images/icon-16@4x.png",
      "128": "images/icon-16@8x.png",
      "512": "images/icon-16@32x.png"
    },
    "default_popup": "popup.html"
  },
  "author": "https://rainbow.me",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "browserextension@rainbow.me",
      "strict_min_version": "116.0"
    }
  },
  "commands": {
    "open_rainbow": {
      "description": "Shortcut to open Rainbow Wallet",
      "suggested_key": {
        "chromeos": "Alt+Shift+R",
        "linux": "Alt+Shift+R",
        "mac": "Alt+Shift+R",
        "windows": "Alt+Shift+R"
      }
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "contentscript.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_start"
    },
    {
      "js": [
        "./vendor/trezor-content-script.js"
      ],
      "matches": [
        "*://connect.trezor.io/9/*"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "frame-ancestors 'none'; script-src 'self'; object-src 'self'; connect-src 'self' ws://localhost:9090 http://127.0.0.1:* https://*.p.rainbow.me https://*.s.rainbow.me https://aha.rainbow.me https://token-search.rainbow.me https://rpc.rainbow.me https://f2c.rainbow.me https://f2c.rainbowdotme.workers.dev https://rpc.flashbots.net https://protect.flashbots.net https://gateway.ipfs.io https://o331974.ingest.sentry.io https://*.dataplane.rudderstack.com https://*.rudderlabs.com https://rainbow.imgix.net https://firebaseinstallations.googleapis.com https://firebaseremoteconfig.googleapis.com https://rainbow-me.firebaseapp.com https://icons.duckduckgo.com https://*.live.ledger.com https://nftp.rainbow.me/ https://gateway-arbitrum.network.thegraph.com https://ccip-v2.ens.xyz;"
  },
  "default_locale": "en_US",
  "description": "__MSG_appDescription__",
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "wss://*/*",
    "<all_urls>"
  ],
  "icons": {
    "16": "images/icon-16.png",
    "19": "images/icon-19.png",
    "32": "images/icon-16@2x.png",
    "38": "images/icon-19@2x.png",
    "64": "images/icon-16@4x.png",
    "128": "images/icon-16@8x.png",
    "512": "images/icon-16@32x.png"
  },
  "manifest_version": 3,
  "minimum_chrome_version": "102",
  "name": "__MSG_appName__",
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "scripting",
    "storage",
    "tabs",
    "unlimitedStorage",
    "notifications"
  ],
  "short_name": "__MSG_appShortName__",
  "version": "1.6.4",
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "inpage.js",
        "*.woff2",
        "703.css",
        "assets/badges/*.png"
      ]
    }
  ]
}