Examine source code of WICS

{
  "name": "WICS",
  "description": "An extension to add and manage custom items to WaniKani",
  "version": "0.1.9",
  "manifest_version": 2,
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.wanikani.com/review/session",
        "https://*.wanikani.com/lesson/session"
      ],
      "js": [
        "src/review.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://*.wanikani.com/*"
      ],
      "exclude_matches": [
        "https://*.wanikani.com/review/session",
        "https://*.wanikani.com/lesson/session"
      ],
      "js": [
        "src/dashboard.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "src/monkeyPatching/jquery.js",
    "src/monkeyPatching/fetch.js"
  ],
  "permissions": [
    "unlimitedStorage",
    "storage",
    "tabs",
    "scripting",
    "activeTab",
    "https://api.wanikani.com/v2/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8b838009-a5ff-4bc2-98f4-298117278b6a}"
    }
  }
}