Examine source code of SARS Notifications

{
  "manifest_version": 2,
  "name": "SARS Notifications",
  "version": "1.0",
  "description": "Plays sound when there is a new drop in student",
  "icons": {
    "128": "/resources/iconLarge.png"
  },
  "web_accessible_resources": [
    "resources/alert.mp3"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://sarsstem.miracosta.edu/sarsanywhere/"
      ],
      "js": [
        "src/content/content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "permissions": [
    "webNavigation",
    "storage",
    "tabs"
  ],
  "browser_action": {
    "default_popup": "src/extension/popup.html",
    "default_icon": "resources/iconSmall.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ee13c7e-9665-448c-a01d-a15b67f2478e}"
    }
  }
}