Date Tools

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Date Tools",
  "permissions": [
    "storage"
  ],
  "description": "Enable date calculation tools.",
  "version": "1.0",
  "action": {
    "default_popup": "./index.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "./content.js"
      ],
      "type": "module"
    }
  ]
}