Examine source code of Twitter/X Container

{
  "manifest_version": 2,
  "name": "Twitter/X Container",
  "version": "1.3.1",
  "description": "This addon is an unofficial fork of Mozilla's Facebook Container designed for X, and Twitter. \n Twitter/X Container isolates your Twitter activity from the rest of your web activity in order to prevent X from tracking you outside of the Twitter website via third party cookies. \n This is not an official Mozilla Product & is in no way related to them.",
  "incognito": "not_allowed",
  "icons": {
    "48": "icon.png",
    "96": "icon@2x.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@twitter_x_container",
      "strict_min_version": "57.0"
    }
  },
  "homepage_url": "https://github.com/ZachEichen/twitter_x_container",
  "permissions": [
    "<all_urls>",
    "contextualIdentities",
    "cookies",
    "management",
    "tabs",
    "webRequestBlocking",
    "webRequest"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}