Ethereum gas price alert

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "short_name": "Wolfalert",
  "name": "Ethereum gas price alert",
  "description": "Wolfalert - Set your alarm to be notified when the ethereum gas price is low!",
  "version": "2.0.1",
  "manifest_version": 3,
  "permissions": [
    "storage",
    "alarms"
  ],
  "action": {
    "default_popup": "./build/index.html",
    "default_title": "Open the popup",
    "default_icon": {
      "16": "/assets/icons/icon16.png",
      "32": "/assets/icons/icon32.png",
      "48": "/assets/icons/icon48.png",
      "128": "/assets/icons/icon128.png"
    }
  },
  "icons": {
    "16": "/assets/icons/icon16.png",
    "32": "/assets/icons/icon32.png",
    "48": "/assets/icons/icon48.png",
    "128": "/assets/icons/icon128.png"
  },
  "background": {
    "service_worker": "./src/scripts/background.js",
    "type": "module"
  }
}