Examine source code of LeetCode Topic Tags

{
  "manifest_version": 2,
  "name": "LeetCode Topic Tags",
  "version": "1.1",
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c4e9bca-0bb6-466b-91f3-4671ca152939}"
    }
  }
}