Examine source code of DR No Reload

{
  "description": "Disable automatic page reloads (Meta refresh) on drudgereport.com.",
  "manifest_version": 2,
  "name": "DR No Reload",
  "version": "1.3",
  "homepage_url": "https://www.tombrossman.com/",
  "icons": {
    "48": "dr-no-reload.svg"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://www.drudgereport.com/*"
  ],
  "background": {
    "scripts": [
      "dr-no-reload.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "57.0a1",
      "id": "{81a13bc7-ff9d-41b4-9d53-1bb8c7f343da}"
    }
  }
}