Examine source code of osm2gmaps

{
  "description": "lorem ipsum",
  "manifest_version": 2,
  "name": "osm2gmaps",
  "version": "1.0",
  "homepage_url": "https://github.com/amsjntz/osm2gmaps",
  "permissions": [
    "contextMenus"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://www.openstreetmap.org/*"
      ],
      "js": [
        "scripts/osm2gmaps.js"
      ]
    },
    {
      "matches": [
        "*://overpass-turbo.eu/*"
      ],
      "js": [
        "scripts/overpass.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3c20e49e-30ad-48e8-b9d2-8fedf2de585f}"
    }
  }
}