Examine source code of Mixpanel

{
  "name": "Mixpanel",
  "version": "0.9",
  "description": "A debugger tool helps to intercept mixpanel events and display event properties",
  "short_name": "mixpanel",
  "icons": {
    "16": "./assets/images/logo-16.png",
    "48": "./assets/images/logo-48.png",
    "128": "./assets/images/logo-128.png"
  },
  "devtools_page": "devtools.html",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [],
  "manifest_version": 2
}