tsconfig.json

{
  "compilerOptions": {
    "sourceMap": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "module": "es6",
    "target": "es2019",
    "moduleResolution": "bundler",
    "allowJs": true
  }
}