Examine source code of Focus-Study-Lofi

{
  "manifest_version": 2,
  "author": "Darshendran",
  "name": "Focus-Study-Lofi",
  "version": "1.0.0",
  "description": "Plays a Copyright Free Lofi rain ambience sound for users to improve productivity",
  "icons": {
    "48": "icons/studyLofi_48.png",
    "128": "icons/studyLofi_128.png"
  },
  "background": {
    "scripts": [
      "studyLofi.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/studyLofi_NONE_19.png",
      "38": "icons/studyLofi_NONE_38.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "p21013205@student.newinti.edu.my"
    }
  }
}