Examine source code of MLB Scoreboard

{
  "manifest_version": 3,
  "name": "MLB Scoreboard",
  "version": "1.8.1",
  "description": "View live scores, stats, and results for all things Baseball in real time.",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "navigation.js"
      ]
    }
  ],
  "host_permissions": [
    "https://statsapi.mlb.com/api/v1.1/game/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "default.html",
    "default_icon": {
      "16": "assets/binbot.png",
      "48": "assets/binbot.png",
      "128": "assets/Group 1.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "jrodriguez13131991@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}