Examine source code of Nitter Redirect Reloaded

{
  "name": "Nitter Redirect Reloaded",
  "description": "Redirects X (formerly Twitter) requests to Nitter, the privacy friendly alternative.",
  "version": "1.0",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://x.com/*",
        "*://www.x.com/*",
        "*://mobile.x.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "*://x.com/*",
    "*://www.x.com/*",
    "*://mobile.x.com/*"
  ],
  "browser_action": {
    "default_popup": "pages/popup/popup.html",
    "default_icon": {
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f885cff8-968c-462b-817f-8060be9b1635}"
    }
  }
}