Examine source code of Browser Navigation

{
  "manifest_version": 2,
  "name": "Browser Navigation",
  "description": "Easier browser Navigation.",
  "version": "0.1.0",
  "icons": {
    "16": "icons/icon_16.png",
    "32": "icons/icon_32.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "BN@DonNinja.com"
    }
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "persistent": false,
    "type": "module"
  },
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "options_ui": {
    "page": "src/popup.html"
  },
  "homepage_url": "https://github.com/DonNinja/Browser-Sounds",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/jquery-3.7.0.min.js",
        "src/contentScript.js"
      ]
    }
  ]
}