Examine source code of Old Wiki Redirect

{
  "manifest_version": 2,
  "name": "Old Wiki Redirect",
  "version": "1.1",
  "description": "Makes wikipedia look like it used to.",
  "icons": {
    "48": "wiki.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.wikipedia.org/*",
        "*://wiki.archlinux.org/*",
        "*://wikiless.org/*",
        "*://wikiless.sethforprivacy.com/*",
        "*://wiki.604kph.xyz/*",
        "*://wikiless.lunar.icu/*",
        "*://wiki.froth.zone/*",
        "*://wikiless.northboot.xyz/*",
        "*://wikiless.tiekoetter.com/*",
        "*://wikiless.esmailelbob.xyz/*",
        "*://wiki.slipfox.xyz/*",
        "*://wikiless.funami.tech/*",
        "*://wl.vern.cc/*",
        "*://wiki.privacytools.io/*",
        "*://wikiless.rawbit.ninja/*",
        "*://wiki.adminforge.d/*"
      ],
      "js": [
        "main.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{57784d1b-cc3d-4912-8312-964ffcafacdd}"
    }
  }
}