Examine source code of Markdown Viewer

{
  "manifest_version": 3,
  "name": "Markdown Viewer",
  "version": "0.4.2",
  "description": "Render Markdown files as styled HTML with themes, syntax highlighting, TOC, Mermaid and KaTeX.",
  "author": "Empirica Apps",
  "homepage_url": "https://empiricapps.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "markdown-viewer@empiricapps.com",
      "strict_min_version": "115.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_title": "Toggle rendered Markdown",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": false,
    "browser_style": false
  },
  "commands": {
    "toggle-view": {
      "description": "Toggle rendered / raw Markdown"
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*",
    "file:///*"
  ],
  "background": {
    "scripts": [
      "src/background/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start",
      "js": [
        "src/content/early.js"
      ],
      "css": [
        "src/content/early.css"
      ]
    },
    {
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_end",
      "js": [
        "vendor/marked.min.js",
        "vendor/dompurify.min.js",
        "vendor/highlight.min.js",
        "src/content/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "vendor/*",
        "vendor/**/*",
        "icons/*",
        "src/content/page-inject/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}