Examine source code of Page Element Cleaner

{
  "manifest_version": 3,
  "name": "Page Element Cleaner",
  "version": "1.0.1",
  "description": "Remove distracting elements from any webpage with a simple click.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{600997a5-3a16-8d9f-b21f-363130378c43}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_data": false
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background_scripts/background.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content_scripts/storage.js",
        "content_scripts/selector-generator.js",
        "content_scripts/cosmetic-eraser.js",
        "content_scripts/app.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_icon": "icons/eraser.svg",
    "default_title": "Cosmetic Content Eraser"
  },
  "sidebar_action": {
    "default_panel": "sidebar/sidebar.html",
    "default_title": "Page Element Cleaner",
    "default_icon": "icons/eraser.svg"
  },
  "icons": {
    "48": "icons/eraser.svg",
    "96": "icons/eraser.svg"
  },
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+X",
        "mac": "Command+Shift+X"
      },
      "description": "Toggle eraser mode"
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+L",
        "mac": "Command+Shift+L"
      },
      "description": "Open sidebar"
    }
  },
  "options_ui": {
    "page": "settings/settings.html",
    "open_in_tab": true
  }
}