Examine source code of HS No Comments

{
  "description": "Blocks reader comments on hs.fi.",
  "manifest_version": 2,
  "name": "HS No Comments",
  "version": "1.4resigned1",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "*://*.hs.fi/rest/articles/*/comments*"
  ],
  "background": {
    "scripts": [
      "blocker.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{5bf6f82b-2977-4c67-a769-82e873db547a}"
    }
  }
}