tsconfig.json

{
  "compilerOptions": {
    /* Basic Options */
    "incremental": true,
    "target": "es5",
    "module": "commonjs",
    "declaration": true,
    "declarationMap": true,
    "sourceMap": true,
    "outDir": "./dist",
    // "rootDir": "./",
    "downlevelIteration": true,
    
    "lib": ["es6", "es2017", "dom"],
    "types": ["node"],
    
    /* Strict Type-Checking Options */
    "strict": true,
    
    /* Additional Checks */
    "noImplicitReturns": true,

    /* Module Resolution Options */
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "allowUmdGlobalAccess": false,

    /* Experimental Options */
    // "experimentalDecorators": true,
    // "emitDecoratorMetadata": true,

    /* Advanced Options */
    "forceConsistentCasingInFileNames": true
  },
  "ts-node": {
    "files": true
  }
}