Examine source code of betasperg

{
  "manifest_version": 2,
  "name": "betasperg",
  "version": "1.0",
  "description": "Remove the NSFW popup on sociopathcommunity.com",
  "content_scripts": [
    {
      "matches": [
        "*://*.sociopathcommunity.com/*"
      ],
      "js": [
        "index.js"
      ]
    }
  ]
}