tsconfig.json

{
  "compilerOptions": {
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "alwaysStrict": true,
    "exactOptionalPropertyTypes": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitOverride": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noPropertyAccessFromIndexSignature": false,
    "noUncheckedIndexedAccess": true,
    "strictBindCallApply": true,
    "strictFunctionTypes": true,
    "strictNullChecks": true,
    "strictPropertyInitialization": true,
    "useUnknownInCatchVariables": true,
    "downlevelIteration": true,
    "outDir": "dist",
    "module": "CommonJS",
    "moduleResolution": "node",
    "target": "ES5",
    "baseUrl": ".",
    "resolveJsonModule": true,
    "declaration": true,
    "importHelpers": false,
    "removeComments": true,
    "sourceMap": false,
    "allowJs": false,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "skipDefaultLibCheck": true,
    "skipLibCheck": true
  },
  "ts-node": {
    "compilerOptions": {
      "module": "CommonJS"
    }
  },
  "include": ["src/**/*"],
  "exclude": ["**/*.spec.ts"]
}