Examine source code of GMaps Copy Coordinates

{
  "manifest_version": 2,
  "name": "GMaps Copy Coordinates",
  "version": "1.0.2resigned1",
  "description": "Copy coordinates appear after clicking \"What's here?\" on G Maps",
  "permissions": [
    "tabs",
    "clipboardWrite"
  ],
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "page_action": {
    "default_icon": "icon.svg",
    "default_title": "Copy coordinates",
    "show_matches": [
      "https://*.google.com/maps/*",
      "https://maps.mozilla.org/*"
    ]
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.google.com/maps/*",
        "https://maps.mozilla.org/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "author": "Erick Madrigal",
  "homepage_url": "https://github.com/ErickMR19/gmaps-copy-coordinates",
  "developer": {
    "name": "Erick Madrigal",
    "url": "https://erickmadrigal.me/debugviewfcdp"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4dfa7a39-e3e7-48f8-bebd-e44b881c06d9}"
    }
  }
}