Examine source code of IntelliSense for LeetCode

{
  "manifest_version": 3,
  "name": "LeetCode IntelliSense",
  "version": "1.1.0",
  "description": "Hover tooltips, dot-completion, and signature help for Java, C++, and Python 3 in LeetCode's code editor.",
  "browser_specific_settings": {
    "gecko": {
      "id": "lc-intellisense@s",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "LeetCode IntelliSense"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "early_hook.js"
      ],
      "world": "MAIN",
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "bridge.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "java-data/java_lang.js",
        "java-data/java_util.js",
        "java-data/java_io.js",
        "java-data/index.js",
        "cpp-data/cpp_stl_a.js",
        "cpp-data/cpp_stl_b.js",
        "cpp-data/cpp_algorithms.js",
        "cpp-data/index.js",
        "python-data/py_builtins.js",
        "python-data/py_stdlib.js",
        "python-data/index.js",
        "injected.js"
      ],
      "world": "MAIN",
      "run_at": "document_idle"
    }
  ]
}