tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "lib": ["esnext", "es2018.promise", "es2017", "esnext.asynciterable"],
    "allowJs": true,
    "downlevelIteration": true,
    "skipLibCheck": true,
    "allowSyntheticDefaultImports": true,
    "strict": true,
    "forceConsistentCasingInFileNames": true,
    "module": "commonjs",
    "moduleResolution": "node",
    "resolveJsonModule": true,
    "isolatedModules": false,
    "experimentalDecorators": true,
    "noEmit": true,
    "jsx": "preserve",
    "esModuleInterop": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "strictNullChecks": true,
    "noImplicitAny": true,
    "noUnusedParameters": false,
    "noUnusedLocals": false
  },
  "include": [
    "./index.ts", 
  ]
}