Examine source code of OSM Everywhere

{
  "manifest_version": 2,
  "name": "OSM Everywhere",
  "version": "1.1.0",
  "description": "__MSG_extensionDescription__",
  "browser_specific_settings": {
    "gecko": {
      "id": "{e3499292-1d3a-47fc-b804-8655638ac670}",
      "strict_min_version": "60.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js",
      "handlers/bing.js",
      "handlers/google.js",
      "handlers/here.js"
    ]
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "default_locale": "en"
}