Examine source code of Twitch Points Collector

{
  "manifest_version": 2,
  "name": "Twitch Points Collector",
  "version": "0.6.0",
  "author": "d43m0nhLInt3r",
  "description": "Automatically collects Twitch Points",
  "icons": {
    "48": "icons/tpc-48.png"
  },
  "browser_action": {
    "default_icon": "icons/tpc-48.png",
    "default_title": "Twitch Points Collector",
    "default_popup": "ui/index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.twitch.tv/*"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "background": {
    "scripts": [
      "script.js"
    ],
    "persistent": true
  },
  "permissions": [
    "*://*.twitch.tv/*",
    "tabs",
    "storage",
    "notifications"
  ]
}