tsconfig.json

{
  "compilerOptions": {
    "esModuleInterop": true,
    "allowSyntheticDefaultImports": true,
    "allowJs": false,
    "resolveJsonModule": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "forceConsistentCasingInFileNames": true,
    "importHelpers": false,
    "lib": ["ES5"],
    "target": "ES5",
    "module": "CommonJS",
    "moduleResolution": "Node",
    "noEmitOnError": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitAny": true,
    "noImplicitReturns": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "strict": true,
    "alwaysStrict": true,
    "pretty": true,
    "preserveConstEnums": true,
    "removeComments": false,
    "sourceMap": true,
    "inlineSourceMap": false,
    "inlineSources": false,
    "declaration": true,
    "declarationDir": "./dist",
    "declarationMap": true,
    "outDir": "./dist"
  },
  "include": ["src/**/*.ts"],
  "exclude": ["lib", "node_modules", "src/**/*.spec.ts", "src/fixtures"]
}