Examine source code of Hacker News filter

{
  "manifest_version": 2,
  "name": "Hacker News filter",
  "description": "Filter posts on the Hacker News.",
  "homepage_url": "https://git.sr.ht/~jakub/hn-filter",
  "version": "1.1.0",
  "author": "zeraye",
  "icons": {
    "64": "src/icons/y18.svg"
  },
  "permissions": [
    "https://news.ycombinator.com/*",
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://news.ycombinator.com/*"
      ],
      "js": [
        "src/js/filter.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_action": {
    "default_icon": {
      "16": "src/icons/y18.svg"
    },
    "default_title": "HN Filter",
    "default_popup": "src/popup/index.html"
  },
  "web_accessible_resources": [
    "src/popup/script.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b0bd9a36-9735-4680-8bb6-8f1db755272d}"
    }
  }
}