Examine source code of QuietCSS

{
  "manifest_version": 3,
  "name": "QuietCSS",
  "version": "0.1.0",
  "description": "Take control of your browsing experience. Restyle or cover distracting elements on any webpage.",
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "tabs"
  ],
  "background": {
    "scripts": [
      "dist/background/service_worker.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "dist/shared/selector_gen.js",
        "dist/shared/pattern_fills.js",
        "dist/content/injector.js",
        "dist/content/observer.js",
        "dist/content/highlight_overlay.js",
        "dist/content/picker.js",
        "dist/content/blind.js",
        "dist/content/edit_mode.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "sidebar_action": {
    "default_title": "QuietCSS",
    "default_panel": "sidebar/sidebar.html",
    "default_icon": "icons/icon-48.png"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "quietcss@tommakes.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "browsingActivity",
          "websiteContent"
        ]
      },
      "strict_min_version": "142.0"
    }
  }
}