tsconfig.json

{
  "compilerOptions": {
    // Type Checking
    "strict": true,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noPropertyAccessFromIndexSignature": true,
    "noUncheckedIndexedAccess": true,

    // Modules
    // "baseUrl": "./",
    "module": "CommonJS",
    "moduleResolution": "Node",
    "resolveJsonModule": true,

    // Emit
    "declaration": true,
    "declarationMap": true,
    "importHelpers": true,
    // "outDir": "./dist",
    "outDir": "./dist/node",
    "removeComments": true,
    "sourceMap": true,

    // Interop Constraints
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    
    // Language and Environment
    "experimentalDecorators": true,
    // "lib": ["ES2017"],
    "target": "ES2017",

    // Completeness
    "skipLibCheck": true
  },
  "include": [
    "src/**/*"
  ]
}