Examine source code of Coles Trend

{
  "manifest_version": 3,
  "name": "Coles Trend",
  "version": "2.0",
  "description": "A simple extension that adds historical price trends to coles.com.au",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.coles.com.au/*"
      ],
      "js": [
        "content.js",
        "lib/chart.js",
        "lib/chartjs-plugin-datalabels.js",
        "lib/dhg.js"
      ],
      "css": [
        "dhg-styles.css"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.coles.com.au/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "colestrend@dataholdings.group"
    }
  }
}