chromium/chrome/test/data/extensions/api_test/scripting/dynamic_scripts_main_world/manifest.json

{
  "manifest_version": 3,
  "name": "Main world dynamic content script test extension",
  "version": "0.1",
  "description": "Tests that dynamic scripts can be injected into the main world",
  "background": {
    "service_worker": "worker.js",
    "type": "module"
  },
  "permissions": ["scripting", "tabs"],
  "host_permissions": ["*://hostperms.com/*"]
}