Examine source code of Ban Checker for Steam

{
  "name": "Ban Checker for Steam",
  "description": "Automatically check bans of people you recently played with, your friends, and group members.",
  "version": "1.5.1",
  "icons": {
    "16": "icons/ow16.png",
    "48": "icons/ow48.png",
    "128": "icons/ow128.png"
  },
  "permissions": [
    "storage",
    "alarms",
    "contextMenus"
  ],
  "host_permissions": [
    "*://steamcommunity.com/*",
    "https://api.steampowered.com/*"
  ],
  "optional_permissions": [
    "notifications"
  ],
  "options_ui": {
    "page": "options.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "options.html",
        "icons/*.svg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_scripts": [
    {
      "js": [
        "checkbans.js",
        "options.js"
      ],
      "css": [
        "display.css"
      ],
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/id/*/friends*",
        "*://steamcommunity.com/profiles/*/friends*",
        "*://steamcommunity.com/id/*/following*",
        "*://steamcommunity.com/profiles/*/following*",
        "*://steamcommunity.com/id/*/groups*",
        "*://steamcommunity.com/profiles/*/groups*"
      ]
    },
    {
      "js": [
        "checkbans-old.js"
      ],
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/groups/*/members*"
      ]
    },
    {
      "js": [
        "replaceurl.js"
      ],
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/groups/*"
      ]
    },
    {
      "js": [
        "options.js",
        "gcpd730.js"
      ],
      "css": [
        "display.css"
      ],
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistorycompetitive",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistorycompetitive",
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistorypremier",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistorypremier",
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistorycompetitivepermap",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistorycompetitivepermap",
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistorywingman",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistorywingman",
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistoryscrimmage",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistoryscrimmage",
        "*://steamcommunity.com/id/*/gcpd/730*tab=matchhistoryophydra",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=matchhistoryophydra",
        "*://steamcommunity.com/id/*/gcpd/730*tab=playerreports",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=playerreports",
        "*://steamcommunity.com/id/*/gcpd/730*tab=playercommends",
        "*://steamcommunity.com/profiles/*/gcpd/730*tab=playercommends"
      ]
    },
    {
      "js": [
        "csrating.js"
      ],
      "run_at": "document_end",
      "matches": [
        "*://steamcommunity.com/id/*/gcpd/730?tab=majors",
        "*://steamcommunity.com/profiles/*/gcpd/730?tab=majors"
      ]
    }
  ],
  "background": {
    "scripts": [
      "service_worker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "banchecker@kuzmenko.io"
    }
  },
  "manifest_version": 3
}