Examine source code of Requester

{
  "manifest_version": 2,
  "name": "Requester",
  "description": "Easily send out HTTP requests to get some data from a server",
  "author": "Santo Pfingsten",
  "version": "0.8.1",
  "applications": {
    "gecko": {
      "id": "requester@lusito.info",
      "strict_min_version": "57.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "64": "icons/icon64.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    },
    "default_popup": "dist/index.html",
    "default_title": "Show Requester"
  },
  "permissions": [
    "storage"
  ]
}