Invite all post likers to like Facebook page

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Invite all post likers to like Facebook page",
  "description": "Invite everyone who liked your post to like your page on Facebook.",
  "version": "3.5",
  "icons": {
    "16": "img/icon16.png",
    "48": "img/icon48.png",
    "128": "img/icon128.png"
  },
  "action": {
    "default_popup": "popup.html"
  },
  "permissions": [
    "storage",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "https://*.facebook.com/*",
    "https://likeinviter.herokuapp.com/user"
  ]
}