Examine source code of JSONPeek

{
  "manifest_version": 2,
  "name": "JSONPeek",
  "description": "Listen for JSONP endpoints.",
  "version": "1.3",
  "permissions": [
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "activeTab",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "exploit.html",
    "exploit.js"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'; style-src 'self' 'unsafe-inline';",
  "browser_specific_settings": {
    "gecko": {
      "id": "{90f1a754-f2a3-4683-a5fd-981ccabc8843}"
    }
  },
  "icons": {
    "512": "icons/eye-512.png"
  }
}