Examine source code of Browser terminal

{
  "manifest_version": 3,
  "name": "Browser terminal",
  "version": "1.4.7",
  "description": "Extension that allows you to open a native shell in the browser",
  "icons": {
    "512": "icons/icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "browser_terminal@catnip.ee",
      "strict_min_version": "109.0"
    }
  },
  "permissions": [
    "nativeMessaging"
  ],
  "action": {
    "default_area": "navbar",
    "default_title": "New terminal"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "html/terminal.html",
        "css/terminal.css",
        "js/terminal.js",
        "icons/icon.png",
        "fonts/Fira Code Regular Nerd Font Complete Mono.ttf",
        "fonts/Fira Code Bold Nerd Font Complete Mono.ttf"
      ],
      "matches": [
        "*://*/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "/js/background.js"
    ]
  }
}