Examine source code of Instagram endless scroll

{
  "manifest_version": 2,
  "applications": {
    "gecko": {
      "id": "gerardes@internet.go",
      "strict_min_version": "49.0"
    }
  },
  "name": "Instagram endless scroll",
  "description": "Don't get blocked by the Insta login popup.",
  "version": "0.30.4",
  "icons": {
    "128": "img/icon_rnd.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.instagram.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "https://www.instagram.com/"
  ],
  "browser_action": {
    "default_icon": "img/icon_rnd.png",
    "default_popup": "popup.html"
  }
}