Examine source code of BetterArxivHTML

{
  "manifest_version": 3,
  "name": "BetterArxivHTML",
  "version": "1.4.21",
  "description": "Better arXiv HTML (experimental): optional chrome hiding, citation popovers, ar5iv abs link, ar5iv citation popovers (Semantic Scholar, Crossref, OpenAlex, arXiv export API).",
  "permissions": [
    "storage"
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false,
    "browser_style": true
  },
  "host_permissions": [
    "https://export.arxiv.org/*",
    "https://api.crossref.org/*",
    "https://api.semanticscholar.org/*",
    "https://api.openalex.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://arxiv.org/html/*",
        "*://*.arxiv.org/html/*"
      ],
      "js": [
        "hide-banner.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://arxiv.org/html/*",
        "*://*.arxiv.org/html/*"
      ],
      "css": [
        "references-popover.css"
      ],
      "js": [
        "ref-metadata-fetch.js",
        "references-popover.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://arxiv.org/abs/*",
        "*://*.arxiv.org/abs/*"
      ],
      "js": [
        "abs-ar5iv-link.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://ar5iv.labs.arxiv.org/html/*"
      ],
      "css": [
        "references-popover.css"
      ],
      "js": [
        "ref-metadata-fetch.js",
        "ar5iv-strip-native-bib-preview.js",
        "references-popover.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "betterarxivhtml@local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}