Examine source code of wwwrangler

{
  "name": "wwwrangler",
  "description": "wrangle data from any web page",
  "homepage_url": "https://github.com/Bortseb/wwwrangler",
  "version": "0.1.0",
  "manifest_version": 2,
  "permissions": [
    "tabs",
    "<all_urls>"
  ],
  "browser_action": {
    "browser_style": true,
    "default_title": "wwwrangler",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "service-worker.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "commands": {
    "wrangle-page": {
      "suggested_key": {
        "default": "Ctrl+Shift+Comma"
      },
      "description": "Wrangle this page into wiki {title: , url:}"
    }
  },
  "web_accessible_resources": [
    "frame.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9ed33884-4104-48ef-813c-6c2c4d576838}"
    }
  }
}