Examine source code of OMORI Typing

{
  "manifest_version": 3,
  "name": "OMORI Typing",
  "version": "1.1.1",
  "description": "Play OMORI text sounds while typing. Inspired by Animalese Typing",
  "permissions": [
    "activeTab",
    "scripting"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "audio/*.ogg"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "omori-typing@moseni.wtf"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}