Examine source code of Random Search Engine

{
  "background": {
    "scripts": [
      "random-search-engine.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a628b581-7132-45cc-86a7-2001aef75156}"
    }
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "Random Search Engine",
      "search_url": "https://random.search.invalid/?q={searchTerms}",
      "encoding": "UTF-8",
      "is_default": true
    }
  },
  "description": "Randomly chooses a search engine for each web search.",
  "homepage_url": "https://codeberg.org/cwfoo/webext-random-search-engine",
  "manifest_version": 2,
  "name": "Random Search Engine",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "webRequest",
    "webRequestBlocking",
    "https://random.search.invalid/?q=*"
  ],
  "version": "1.0.0"
}