Examine source code of RotoWire

{
  "manifest_version": 2,
  "version": "2.0.2",
  "name": "RotoWire",
  "description": "Get quick access analysis for your fantasy sport leagues.",
  "permissions": [
    "tabs",
    "storage",
    "*://*.rotowire.com/*",
    "*://fanduel.com/history*",
    "https://fanduel.com/pg/MyContests/showCSV/*",
    "https://draftkings.com/mycontests*"
  ],
  "icons": {
    "16": "images/RW16.png",
    "32": "images/RW32.png",
    "48": "images/RW48.png",
    "128": "images/RW128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "*://sports.yahoo.com/nfl/scoreboard*",
        "*://sports.yahoo.com/mlb/scoreboard*",
        "*://sports.yahoo.com/nba/scoreboard*",
        "*://sports.yahoo.com/nhl/scoreboard*",
        "*://www.espn.com/nfl/scoreboard*",
        "*://www.espn.com/mlb/scoreboard*",
        "*://www.espn.com/nba/scoreboard*",
        "*://www.espn.com/nhl/scoreboard*",
        "*://www.cbssports.com/nfl/scoreboard*",
        "*://www.cbssports.com/mlb/scoreboard*",
        "*://www.cbssports.com/nba/scoreboard*",
        "*://www.cbssports.com/nhl/scoreboard*",
        "*://www.nfl.com/scores*",
        "*://www.mlb.com/scores*",
        "*://www.nba.com/games*",
        "*://www.nhl.com/scores*"
      ],
      "js": [
        "jquery.js",
        "content.js",
        "filter-tabs.js",
        "player-panel.js",
        "player-search.js",
        "player-icons.js",
        "sports-betting.js"
      ],
      "css": [
        "css/module.css",
        "css/player-panel.css",
        "css/player-search.css",
        "css/modal.css",
        "css/universal.css",
        "css/nav.css",
        "css/news.css",
        "css/switch.css",
        "css/loader.css",
        "css/filter-tabs.css",
        "css/stats.css",
        "css/schedule.css",
        "css/game-panel.css"
      ]
    },
    {
      "matches": [
        "https://www.fanduel.com/history",
        "https://www.draftkings.com/mycontests",
        "https://www.rotowire.com/daily/tracker/extension.php"
      ],
      "js": [
        "/dfs/js/jquery-3.3.1.min.js",
        "/dfs/js/jquery.csv.js",
        "/dfs/content_scripts/import-fanduel.js",
        "/dfs/content_scripts/import-draftkings.js"
      ],
      "css": [
        "/dfs/css/form.css"
      ]
    },
    {
      "matches": [
        "<all_urls>",
        "*://*.fantasysports.yahoo.com/*",
        "*://fantasy.espn.com/*",
        "*://*.cbssports.com/*",
        "*://*.fantrax.com/*",
        "*://*.nfc.shgn.com/*",
        "*://*.fleaflicker.com/*",
        "*://*.ottoneu.fangraphs.com/*",
        "*://*.rtsports.com/*",
        "*://*.myfantasyleague.com/*",
        "*://*.fantasy.nfl.com/*",
        "*://*.sleeper.app/*",
        "*://*.scoresheet.com/*",
        "*://*.fanduel.com/*",
        "*://*.draftkings.com/*"
      ],
      "css": [
        "css/module.css",
        "css/player-panel.css",
        "css/player-search.css",
        "css/modal.css",
        "css/universal.css",
        "css/nav.css",
        "css/news.css",
        "css/switch.css",
        "css/loader.css",
        "css/filter-tabs.css",
        "css/stats.css"
      ],
      "js": [
        "jquery.js",
        "content.js",
        "player-search.js",
        "player-icons.js",
        "player-panel.js",
        "filter-tabs.js",
        "dfs.js",
        "sports-betting.js",
        "/myleagues/best-lineup.js",
        "/myleagues/my-leagues.js",
        "/myleagues/top-free-agents.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "jquery.js",
      "background.js"
    ]
  },
  "browser_action": {}
}