Examine source code of Zoom Join/Leave Chart

{
  "manifest_version": 2,
  "name": "Zoom Join/Leave Chart",
  "description": "Make a bar chart of the join and leave times of your zoom session participants.",
  "version": "2.0.3",
  "icons": {
    "32": "icons/joinleave-32.png",
    "48": "icons/joinleave-48.png"
  },
  "background": {
    "scripts": [
      "background_script.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "browser-polyfill.min.js",
        "content_script.js",
        "papaparse.js",
        "zoomcsv.js"
      ]
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": {
      "32": "icons/joinleave.png"
    },
    "default_popup": "index.html",
    "default_title": "Zoom Join/Leave Chart"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{55e08eda-07f6-449b-80ed-5d746263bf88}"
    }
  }
}