Examine source code of Actual Articles

{
  "name": "Actual Articles",
  "version": "1.0.3",
  "description": "A quick way to get actual articles about selected tech mail subscriptions.",
  "manifest_version": 2,
  "permissions": [
    "https://*/",
    "http://*/"
  ],
  "browser_action": {
    "default_popup": "index.html"
  },
  "icons": {
    "16": "./assets/icons/aa_16.png",
    "48": "./assets/icons/aa_48.png",
    "128": "./assets/icons/aa_128.png"
  },
  "background": {
    "scripts": [
      "background.js",
      "runtime.js"
    ],
    "persistent": false
  },
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self';"
}