Examine source code of Hackernews Userscript

{
  "manifest_version": 3,
  "name": "Hackernews Userscript",
  "description": "Play Hide and Seek",
  "version": "1.0.0",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "background": {
    "scripts": [
      "background-worker.js"
    ]
  },
  "permissions": [
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "*://news.ycombinator.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://news.ycombinator.com/*"
      ],
      "js": [
        "hackernews_userscript.js",
        "run_wasm.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "hackernews_userscript_bg.wasm"
      ],
      "matches": [
        "*://news.ycombinator.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hackernews-userscript@drakerossman.com"
    }
  }
}