cognitive-services-speech-sdk-js/tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "module": "esnext",
    "moduleResolution": "node",
    "preserveConstEnums": true,
    "sourceMap": true,
    "declaration": true,
    "noImplicitAny": true,
    "removeComments": false,
    "esModuleInterop": true
  }
}