Examine source code of Fandom Fixer

{
  "manifest_version": 2,
  "name": "Fandom Fixer",
  "version": "1.0.1",
  "description": "Makes fandom somewhat usable",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "fandomfixer@net.opensourcefreak"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.fandom.com/wiki/*",
        "*://*.fandom.com/*/wiki/*"
      ],
      "js": [
        "postload.js"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.fandom.com/wiki/*",
        "*://*.fandom.com/*/wiki/*"
      ],
      "js": [
        "preload.js"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}