Examine source code of TypeScript Blocker

{
  "manifest_version": 2,
  "name": "TypeScript Blocker",
  "version": "1.0",
  "description": "Attempts to block the loading of TypeScript files on the current website",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4492578e-bcf9-4247-8285-e964d621f38b}"
    }
  }
}