Examine source code of Minelead

{
  "manifest_version": 3,
  "name": "Minelead",
  "description": "Find Emails and Generate Leads",
  "version": "1.1.0",
  "icons": {
    "128": "./images/icon-128px.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hammicristo@gmail.com",
      "strict_min_version": "54.0"
    }
  },
  "action": {
    "default_icon": "./images/icon-19px.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "tabs"
  ],
  "host_permissions": [
    "https://api.minelead.io/",
    "https://linkedin.com/"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*",
        "https://linkedin.com/*"
      ],
      "js": [
        "js/linkedin.js"
      ]
    }
  ]
}