chromium/chrome/test/data/extensions/api_test/tts/service_worker_speak_error/manifest.json

{
  "name": "chrome.tts",
  "version": "0.1",
  "manifest_version": 3,
  "description": "browser test for chrome.tts API with MV3",
  "background": {
      "service_worker": "test.js"
    },
  "permissions": ["tts"]
}