Examine source code of Medium Unplugged

{
  "manifest_version": 2,
  "name": "Medium Unplugged",
  "developer": {
    "name": "Kheoh Yee Wei",
    "url": "https://kheohyeewei.com"
  },
  "version": "1.1.0",
  "description": "Load Medium articles faster and leaner",
  "icons": {
    "128": "medium-unplugged.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "https://medium.com/*",
        "https://*.medium.com/*"
      ],
      "js": [
        "purify.min.js",
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "purify.min.js",
      "const.js",
      "bypassPaywall.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "medium-unplugged.svg",
    "default_title": "Medium Unplugged",
    "default_popup": "popup.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mediumunplugged@mediumunplugged"
    }
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "storage",
    "https://medium.com/*",
    "https://*.medium.com/*",
    "https://gist.github.com/*"
  ],
  "web_accessible_resources": [
    "worker.js"
  ]
}