tsconfig.json

// {
//   "compilerOptions": {
//     "module": "commonjs",
//     "esModuleInterop": true,
//     "target": "es6",
//     "moduleResolution": "node",
//     "sourceMap": true,
//     "outDir": "dist",
//     "experimentalDecorators": true, // to resolve  class-transformer issue
//     "emitDecoratorMetadata": true,
//   },
//   "lib": ["es2015"]
// }

{
  "compileOnSave": false,
  "compilerOptions": {
    "allowJs": true,
    "allowSyntheticDefaultImports": true,
    "baseUrl": "src",
    "declaration": true,
    "emitDecoratorMetadata": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": true,
    "lib": ["es2017", "esnext.asynciterable"],
    "module": "commonjs",
    "moduleResolution": "node",
    "noEmit": false,
    "outDir": "./dist",
    "pretty": true,
    "resolveJsonModule": true,
    "sourceMap": true,
    "target": "es2017",
    "typeRoots": ["node_modules/@types"]
  },
  "include": ["src/**/*.ts", "src/**/*.json", ".env"],
  "exclude": ["node_modules"]
}